SMC2555W-AG
EliteConnect™ Universal 2.4GHz/5GHz Wireless Access Point User Guide The easy way to make all your network connections 38 Tesla Irvine, CA 92618 Phone: (949) 679-8000 September 2003 Revision Number: R01, F2.0.
Copyright Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SMC. SMC reserves the right to change specifications at any time without notice. Copyright © 2003 by SMC Networks, Inc.
LIMITED WARRANTY Limited Warranty Statement: SMC Networks, Inc. (“SMC”) warrants its products to be free from defects in workmanship and materials, under normal use and service, for the applicable warranty term. All SMC products carry a standard 90-day limited warranty from the date of purchase from SMC or its Authorized Reseller. SMC may, at its own discretion, repair or replace any product not operating as warranted with a similar or functionally equivalent product, during the applicable warranty term.
LIMITED WARRANTY Customers are responsible for all shipping charges from their facility to SMC. SMC is responsible for return shipping charges from SMC to customer. WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION.
COMPLIANCES Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
COMPLIANCES Industry Canada - Class B This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of Industry Canada. Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe B prescrites dans la norme sur le matérial brouilleur: “Appareils Numériques,” NMB-003 édictée par l’Industrie.
COMPLIANCES • Immunity to conducted disturbances, Induced by radio-frequency fields: EN 61000-4-6:1996 (0.
COMPLIANCES 13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Servicepersonal geöffnet werden. 14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu überprüfen: a. Netzkabel oder Netzstecker sind beschädigt. b. Flüssigkeit ist in das Gerät eingedrungen. c. Das Gerät war Feuchtigkeit ausgesetzt. d.
TABLE OF CONTENTS 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Package Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Component Description . . . . . . . . . . . . . . . . . . . . . . . . Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-44 6 Command Line Interface . . . . . . . . . . . . . . . . . . . 6-1 Using the Command Line Interface . . . . . . . . . . . . . . . . . . . . .6-1 Accessing the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 Console Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 Telnet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2 Entering Commands . . . . .
TABLE OF CONTENTS logging level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . logging facility-type . . . . . . . . . . . . . . . . . . . . . . . . . . . show logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sntp-server ip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sntp-server enable . . . . . . . . . . . . . . . . . . . . . . . . . . . sntp-server date-time . . . . . . . . . . . . . . . . . . . . . . . . . sntp-server daylight-saving . . . . . . .
TABLE OF CONTENTS mac-authentication server . . . . . . . . . . . . . . . . . . . . . .6-54 mac-authentication session-timeout . . . . . . . . . . . . . . .6-55 show authentication . . . . . . . . . . . . . . . . . . . . . . . . . . .6-56 Filtering Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-57 filter local-bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-57 filter ap-manage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . show interface wireless . . . . . . . . . . . . . . . . . . . . . . . . show station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IAPP Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iapp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VLAN Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vlan . . . . . . . . . .
TABLE OF CONTENTS xii
Chapter 1 Introduction SMC’s EliteConnect Universal 2.4GHz/5GHz Wireless Access Point (SMC2555W-AG) is an IEEE 802.11a/g access point that provides transparent, wireless high-speed data communications between the wired LAN and fixed, portable or mobile devices equipped with an 802.11a, 802.11b, or 802.11g wireless adapter. This solution offers fast, reliable wireless connectivity with considerable cost savings over wired LANs (which include long-term maintenance overhead for cabling). Using 802.11a, 802.
Introduction The access point also supports a 54 Mbps half-duplex connection to Ethernet networks for each active channel (up to 108 Mbps in turbo mode on the 802.11a interface). Package Checklist The EliteConnect Universal 2.4GHz/5GHz Wireless Access Point package includes: • One Wireless Dual-band Access Point (SMC2555W-AG) • One Category 5 network cable • One RS-232 console cable • One 5.
Hardware Description Hardware Description Front Panel Antennas Indicator Panel Rear Panel Security Slot Console Port RJ-45 Port, PoE Connector Reset Button 5 VDC Power Socket 1-3
Introduction Component Description Antennas The access point includes two antennas for wireless communications. The signal transmitted from both antennas is identical, but only the best signal received on one of the antennas is used. The antennas transmit the outgoing signal as a toroidal sphere, so the antennas should be adjusted to different angles to provide better coverage. For further information, see “Positioning the Antennas” on page 2-2.
Hardware Description LED Status Description .11a On Indicates a valid 802.11a wireless link. Very Slow Flashing Searching for network association. Slow Flashing Associated with network but no activity. Fast Flashing Indicates that the access point is transmitting or receiving data through wireless links. Flashing rate is proportional to network activity. On Indicates a valid 802.11g or 802.11b wireless link. Very Slow Flashing Searching for network association.
Introduction Ethernet Port The access point has one 10BASE-T/100BASE-TX RJ-45 port that can be attached directly to 10BASE-T/100BASE-TX LAN segments. These segments must conform to the IEEE 802.3 or 802.3u specifications. This port uses an MDI (i.e., internal straight-through) pin configuration. You can therefore use straight-through twisted-pair cable to connect this port to most network interconnection devices such as a switch or router that provide MDI-X ports.
Features and Benefits adjusts to any voltage between 100-240 volts at 50 or 60 Hz. No voltage range settings are required. The access point may also receive Power over Ethernet (PoE) from a switch or other network device that supplies power over the network cable based on the IEEE 802.3af standard. Note that if the access point is connected to a PoE source device and also connected to a local power source through the AC power adapter, PoE will be disabled.
Introduction Applications The Wireless products offer a high speed, reliable, cost-effective solution for 10/100 Mbps wireless Ethernet client access to the network in applications such as: • Remote access to corporate network information E-mail, file transfer, and terminal emulation. • Difficult-to-wire environments Historical or old buildings, asbestos installations, and open areas where wiring is difficult to employ.
Chapter 2 Hardware Installation 1. Select a Site – Choose a proper place for the access point. In general, the best location is at the center of your wireless coverage area, within line of sight of all wireless devices. Try to place the access point in a position that can best cover its Basic Service Set (refer to “Infrastructure Wireless LAN” on page 3-3). Normally, the higher you place the access point, the better the performance. 2.
Hardware Installation Otherwise, the access point can derive its operating power directly from the RJ-45 port when connected to a device that provides IEEE 802.3af compliant Power over Ethernet (PoE). Note: If the access point is connected to both a PoE source device and an AC power source, PoE will be disabled. Warning: Use ONLY the power adapter supplied with this access point. Otherwise, the product may be damaged. 5.
Hardware Installation The access point also compares the strength of an incoming signal on both antennas, and uses the antenna receiving the stronger signal to communicate with a wireless client. 8. Connect the Console Port – Connect the console cable (included) to the RS-232 console port for accessing the command-line interface. You can manage the access point using the console port (Chapter 6), the web interface (Chapter 5), or SNMP management software such as SMC’s EliteView.
Hardware Installation 2-4
Chapter 3 Network Configuration The wireless solution supports a stand-alone wireless network configuration as well as an integrated configuration with 10/100 Mbps Ethernet LANs. Wireless network cards, adapters, and access points can be configured as: • Ad hoc for departmental, SOHO, or enterprise LANs • Infrastructure for wireless LANs • Infrastructure wireless LAN for roaming wireless PCs The 802.11b and 802.11g frequency band which operates at 2.
Network Configuration Network Topologies Ad Hoc Wireless LAN (no AP or Bridge) An ad hoc wireless LAN consists of a group of computers, each equipped with a wireless adapter, connected via radio signals as an independent wireless LAN. Computers in a specific ad hoc wireless LAN must therefore be configured to the same radio channel.
Network Topologies Infrastructure Wireless LAN The access point also provides access to a wired LAN for wireless workstations. An integrated wired/wireless LAN is called an Infrastructure configuration. A Basic Service Set (BSS) consists of a group of wireless PC users, and an access point that is directly connected to the wired LAN.
Network Configuration Infrastructure Wireless LAN for Roaming Wireless PCs The Basic Service Set (BSS) is the communications domain for each wireless access point. For wireless PCs that do not need to support roaming, set the domain identifier (SSID) for the wireless card to the SSID of the access point to which you want to connect. Check with your administrator for the SSID of the access point or bridge to which he wants you to connect. A wireless infrastructure can also support roaming for mobile workers.
Chapter 4 Initial Configuration The EliteConnect Universal 2.4GHz/5GHz Wireless Access Point SMC2555W-AG offers a variety of management options, including a web-based interface, a direct connection to the console port, or using SNMP software such as SMC’s EliteView. The initial configuration steps can be made through the web browser interface using the Setup Wizard (page 4-4). The default IP address is 192.168.2.2.
Initial Configuration 2. Connect the other end of the cable to the RS-232 serial port on the access point. 3. Make sure the terminal emulation software is set as follows: • Select the appropriate serial port (COM port 1 or 2). • Set the data rate to 9600 baud. • Set the data format to 8 data bits, 1 stop bit, and no parity. • Set flow control to none. • Set the emulation mode to VT100. • When using HyperTerminal, select Terminal keys, not Windows keys.
Initial Setup through the CLI Setting the IP Address – By default, the access point is configured to obtain IP address settings from a DHCP server. You will therefore have to use the command line interface (CLI) to assign an IP address that is compatible with your network. Type “configure” to enter configuration mode, then type “interface ethernet” to access the Ethernet interface-configuration mode.
Initial Configuration Using Web-based Management Setup Wizard There are only a few basic steps you need to complete to connect the SMC2555W-AG to your corporate network, and provide network access to wireless clients. The Setup Wizard takes you through configuration procedures for the wireless Service Set Identifier, the radio channel selection, IP configuration, and basic WEP authentication for wireless clients. The SMC2555W-AG can be managed by any computer using a web browser (Internet Explorer 5.
Using Web-based Management Logging In – Enter the username “smcadmin,” the password “admin,” and click LOGIN. For information on configuring a user name and password, refer to page 5-18. The home page displays the Main Menu.
Initial Configuration Launching the Setup Wizard – To perform initial configuration, click Setup Wizard on the home page, then click on the [Next] button to start the process. 1. Service Set ID – Enter the service set identifier in the SSID box which all wireless clients must use to associate with the access point. The SSID is case sensitive and can consist of up to 32 alphanumeric characters.
Using Web-based Management 2. Radio Channel – You must enable radio communications for 802.11a and 802.11b/g, and set the operating radio channel. • 802.11a Turbo Mode – If you select Enable, the access point will operate in turbo mode with a data rate of up to 108 Mbps. Normal mode support 13 channels, Turbo mode supports only 5 channels. (Default: Disable) 802.11a Radio Channel – Set the operating radio channel number. (Default: 64ch, 5.
Initial Configuration 3. IP Configuration – Either enable or disable (Dynamic Host Configuration Protocol (DHCP) for automatic IP configuration. If you disable DHCP, then manually enter the IP address and subnet mask. If a management station exists on another network segment, then you must enter the IP address for a gateway that can route traffic between these segments.
Using Web-based Management 4. Security – Set the Authentication Type to “Open System” to allow open access without authentication, or “Shared Key” to require authentication based on a shared key. Enable Wired Equivalent Privacy (WEP) to encrypt data transmissions. To configure other security features use the Advanced Setup menu as described in Chapter 5.
Initial Configuration type, and entering a hexadecimal or ASCII string of the appropriate length. The key can be entered as alphanumeric characters or hexadecimal (0~9, A~F, e.g., D7 0A 9C 7F E5). (Default: 128 bit, hexadecimal key type) 64-Bit Manual Entry: The key can contain 10 hexadecimal digits, or 5 alphanumeric characters. 128-Bit Manual Entry: The key can contain 26 hexadecimal digits or 13 alphanumeric characters.
Chapter 5 System Configuration Before continuing with advanced configuration, first complete the initial configuration steps described in Chapter 4 to set up an IP address for the SMC2555W-AG. The SMC2555W-AG can be managed by any computer using a web browser (Internet Explorer 5.0 or above, or Netscape Navigator 6.2 or above). Enter the default IP address: http://192.168.2.2 To log into the SMC2555W-AG, enter the default user name “smcadmin” and password “smc.
System Configuration The information in this chapter is organized to reflect the structure of the web screens for easy reference. However, we recommend that you configure a user name and password as the first step under advanced configuration to control management access to this device (page 5-18). Advanced Configuration The Advanced Configuration pages include the following options.
Advanced Configuration Menu Description Radio Interface 1 Configures the IEEE 802.11a interface 5-25 Radio Settings Configures radio signal parameters, such as radio channel, transmission rate, and beacon settings 5-26 Security Configures data encryption with Wired Equivalent Protection (WEP) or Wi-Fi Protected Access (WPA) 5-31 Configures the IEEE 802.
System Configuration System Identification The system information parameters for the SMC2555W-AG can be left at their default settings. However, modifying these parameters can help you to more easily distinguish different devices in your network. You should set a Service Set Identification (SSID) to identify the wireless network service provided by the SMC2555W-AG. Only clients with the same SSID can associate with the access point.
Advanced Configuration TCP / IP Settings Configuring the SMC2555W-AG with an IP address expands your ability to manage the access point. A number of access point features depend on IP addressing to operate. Note: You can use the web browser interface to access IP addressing only if the access point already has an IP address that is reachable through your network. By default, the SMC2555W-AG will be automatically configured with IP settings from a Dynamic Host Configuration Protocol (DHCP) server.
System Configuration DHCP Client (Enable) – Select this option to obtain the IP settings for the access point from a DHCP (Dynamic Host Configuration Protocol) server. The IP address, subnet mask, default gateway, and Domain Name Server (DNS) address are dynamically assigned to the access point by the network DHCP server. (Default: Disable) DHCP Client (Disable) – Select this option to manually configure a static address for the access point. • IP Address: The IP address of the access point.
Advanced Configuration Radius Remote Authentication Dial-in User Service (RADIUS) is an authentication protocol that uses software running on a central server to control access to RADIUS-aware devices on the network. An authentication server contains a database of user credentials for each user that requires access to the network. A primary RADIUS server must be specified for the SMC2555W-AG to implement IEEE 802.1x network access control and Wi-Fi Protected Access (WPA) wireless security.
System Configuration Primary Radius Server Setup – Configure the following settings to use RADIUS authentication on the access point. • IP Address: Specifies the IP address or host name of the RADIUS server. • Port: The UDP port number used by the RADIUS server for authentication messages. (Range: 1024-65535; Default: 1812) • Key: A shared text string used to encrypt messages between the access point and the RADIUS server. Be sure that the same text string is specified on the RADIUS server.
Advanced Configuration Authentication Wireless clients can be authenticated for network access by checking their MAC address against the local database configured on the access point, or by using the IEEE 802.1x network access authentication protocol to look up their MAC addresses on a RADIUS server. The 802.1x protocol can also be configured to check other user credentials such as a user name and password.
System Configuration MAC Authentication – You can configure a list of the MAC addresses for wireless clients that are authorized to access the network. This provides a basic level of authentication for wireless clients attempting to gain access to the network. A database of authorized MAC addresses can be stored locally on the SMC2555W-AG or remotely on a central RADIUS server.
Advanced Configuration • • MAC Authentication Settings: Enters specified MAC addresses and permissions into the local MAC database. - MAC Address: Physical address of a client. Enter six pairs of hexadecimal digits separated by hyphens; for example, 00-90-D1-12-AB-89. - Permission: Select Allow to permit access or Deny to block access. If Delete is selected, the specified MAC address entry is removed from the database.
System Configuration wireless association with the access point, each client is allowed to access the network. • Supported: The access point supports 802.1x authentication only for clients initiating the 802.1x authentication process (the access point does not initiate 802.1x authentication). For clients initiating 802.1x, only those successfully authenticated are allowed to access the network. For those clients not initiating 802.
Advanced Configuration Filter Control The access point can employ VLAN ID and network traffic frame filtering to control access to network resources and increase security.
System Configuration Native VLAN ID – The VLAN ID assigned to wireless clients that are not assigned to a specific VLAN by RADIUS server configuration. VLAN – Enables or disables VLAN tagging support on the SMC2555W-AG. If enabled, the access point will tag traffic passing from wireless clients to the wired network with the VLAN ID associated with each client on the RADIUS server.
Advanced Configuration When VLAN filtering is enabled, the access point must also have 802.1x authentication enabled and a RADIUS server configured. Wireless clients must also support 802.1x client software to be assigned to a specific VLAN. When VLAN filtering is disabled, the access point ignores the VLAN tags on any received frames. Local Bridge Filter – Controls wireless-to-wireless communications between clients through the SMC2555W-AG.
System Configuration SNMP You can use a network management application such as SMC’s EliteView (EliteView v6.11, available in Q4 of 2003) to manage the SMC2555W-AG via the Simple Network Management Protocol (SNMP) from a network management station. To implement SNMP management, the SMC2555W-AG must have an IP address and subnet mask, configured either manually or dynamically. Once an IP address has been configured, appropriate SNMP communities and trap receivers should be configured.
Advanced Configuration SNMP – Enables or disables SNMP management access and also enables the access point to send SNMP traps (notifications). SNMP management is enabled by default. Location – A text string that describes the system location. (Maximum length: 20 characters) Contact – A text string that describes the system contact. (Maximum length: 255 characters) Community Name (Read Only) – Defines the SNMP community access string that has read-only access.
System Configuration Administration Changing the Password Management access to the web and CLI interface on the SMC2555W-AG is controlled through a single user name and password. You can also gain additional access security by using control filters (see “Filter Control” on page 5-13). To protect access to the management interface, you need to configure an Administrator’s user name and password as soon as possible.
Advanced Configuration Upgrading Firmware You can upgrade new SMC2555W-AG software from a local file on the management workstation, or from an FTP or TFTP server. New software may be provided periodically on SMC’s web site (http://www.smc.com). After upgrading new software, you must reboot the SMC2555W-AG to implement the new code. Until a reboot occurs, the SMC2555W-AG will continue to run the software it was using before the upgrade started.
System Configuration Before upgrading new software, verify that the SMC2555W-AG is connected to the network and has been configured with a compatible IP address and subnet mask. If you need to download from an FTP or TFTP server, take the following additional steps: • Obtain the IP address of the FTP or TFTP server where the access point software is stored. • If upgrading from an FTP server, be sure that you have an account configured on the server with a user name and password.
Advanced Configuration Firmware Upgrade Remote – Downloads an operation code image file from a specified remote FTP or TFTP server. After filling in the following fields, click Start Upgrade to proceed. • New firmware file: Specifies the name of the code file on the server. The new firmware file name should not contain slashes (\ or /), the leading letter of the file name should not be a period (.
System Configuration System Log The SMC2555W-AG can be configured to send event and error messages to a System Log Server. The system clock can also be synchronized with a time server, so that all the messages sent to the Syslog server are stamped with the correct time and date. Enabling System Logging The SMC2555W-AG supports a logging process that can control error messages saved to memory or sent to a Syslog server.
Advanced Configuration Server Name/IP – The IP address or name of a Syslog server. Logging Console – Enables the logging of error messages to the console. Logging Level – Sets the minimum severity level for event logging. The system allows you to limit the messages that are logged by specifying a minimum severity level. The following table lists the error message levels from the most severe (Alert) to least severe (Debug).
System Configuration not set, the access point will only record the time from the factory default set at the last bootup. The SMC2555W-AG acts as an SNTP client, periodically sending time synchronization requests to specific time servers. You can configure up to two time server IP addresses. The access point will attempt to poll each server in the configured sequence. SNTP Server – Configures the access point to operate as an SNTP client. When enabled, at least one time server IP address must be specified.
Radio Interface Radio Interface The IEEE 802.11a and 802.11g interfaces include configuration options for radio signal characteristics and wireless security features. The configuration options are nearly identical, and are therefore both covered in this section of the manual. The access point can operate in three modes, IEEE 802.11a only, 802.11b/g only, or a mixed 802.11a/b/g mode. Also note that 802.11g is backward compatible with 802.11b.
System Configuration Radio Settings (802.11a) The IEEE 802.11a interface operates within the 5 GHz band, at up to 54 Mbps in normal mode or up to 108 Mbps in Turbo mode. Enable – Enables radio communications on the SMC2555W-AG. (Default: Enabled) Turbo Mode – The normal 802.11a wireless operation mode provides connections up to 54 Mbps. Turbo Mode is an enhanced mode (not regulated in IEEE 802.11a) that provides a higher data rate of up to 108 Mbps.
Radio Interface Note: In normal mode, the access point provides a channel bandwidth of 20 MHz, and supports the maximum number of channels permitted by local regulations (e.g., 11 channels for the United States). In Turbo Mode, the channel bandwidth is increased to 40 MHz to support the increased data rate. However, this reduces the number of channels supported (e.g., 5 channels for the United States).
System Configuration Maximum Supported Rate – The maximum data rate at which a client can connect to the access point. The maximum transmission distance is affected by the data rate. The lower the data rate, the longer the transmission distance. (Options: 54, 48, 36, 24 Mbps; Default: 54 Mbps) Beacon Interval – The rate at which beacon signals are transmitted from the access point. The beacon signals allow wireless clients to maintain contact with the access point.
Radio Interface If the RTS threshold is set to 0, the access point never sends RTS signals. If set to 2347, the access point always sends RTS signals. If set to any other value, and the packet size equals or exceeds the RTS threshold, the RTS/CTS (Request to Send / Clear to Send) mechanism will be enabled. The access points contending for the medium may not be aware of each other. The RTS/CTS mechanism can solve this “Hidden Node Problem.” (Range: 0-2347 bytes: Default: 2347 bytes) Radio Settings (802.
System Configuration Enable – Enables radio communications on the SMC2555W-AG. (Default: Enabled) Radio Channel – The radio channel that the access point uses to communicate with wireless clients. When multiple access points are deployed in the same area, set the channel on neighboring access points at least five channels apart to avoid interference with each other. For example, in the United States you can deploy up to three access points in the same area (e.g., channels 1, 6, 11).
Radio Interface Security The SMC2555W-AG is configured by default as an “open system,” which broadcasts a beacon signal including the configured SSID. Wireless clients can read the SSID from the beacon, and automatically reset their SSID to allow immediate connection to the nearest access point. To improve wireless network security, you have to implement two main functions: • Authentication: It must be verified that clients attempting to connect to the network are authorized users.
System Configuration The security mechanisms that may be employed depend on the level of security required, the network and management resources available, and the software support provided on wireless clients. A summary of wireless security considerations is listed in the following table. Security Mechanism Client Support Implementation Considerations WEP Built-in support on all 802.11a, 802.11b and 802.11g devices • Provides only weak security • Requires manual key management WEP with 802.
Radio Interface Wired Equivalent Privacy (WEP) WEP provides a basic level of security, preventing unauthorized access to the network and encrypting data transmitted between wireless clients and the access point. WEP uses static shared keys (fixed-length hexadecimal or alphanumeric strings) that are manually distributed to all clients that want to use the network. WEP is the security protocol initially specified in the IEEE 802.11 standard for wireless communications.
System Configuration Setting up shared keys enables the basic IEEE 802.11 Wired Equivalent Privacy (WEP) on the access point to prevent unauthorized access to the network. If you choose to use WEP shared keys instead of an open system, be sure to define at least one static WEP key for user authentication and data encryption. Also, be sure that the WEP shared keys are the same for each client in the wireless network.
Radio Interface Key Type – Select the preferred method of entering WEP encryption keys on the access point and enter up to four keys: • Hexadecimal: Enter keys as 10 hexadecimal digits (0 to 9 and A to F) for 64 bit keys, 26 hexadecimal digits for 128 bit keys, or 32 hexadecimal digits for 152 bit keys. • Alphanumeric: Enter keys as 5 alphanumeric characters for 64 bit keys, 13 alphanumeric characters for 128 bit keys, or 16 alphanumeric characters for 152 bit keys.
System Configuration Wi-Fi Protected Access (WPA) WPA employs a combination of several technologies to provide an enhanced security solution for 802.11 wireless networks. The SMC2555W-AG supports the following WPA components and features: IEEE 802.1x and the Extensible Authentication Protocol (EAP): WPA employs 802.1x as its basic framework for user authentication and dynamic key management. The 802.
Radio Interface Note: To implement WPA on wireless clients requires a WPA-enabled network card driver and 802.1x client software that supports the EAP authentication type that you want to use. Windows XP provides native WPA support, other systems require additional software. Temporal Key Integrity Protocol (TKIP): WPA specifies TKIP as the data encryption method to replace WEP. TKIP avoids the problems of WEP static keys by dynamically changing data encryption keys.
System Configuration multicast and broadcast traffic must be the same for all clients, therefore it restricts encryption to a WEP key. Advanced Encryption Standard (AES) Support: WPA specifies AES encryption as an optional alternative to TKIP and WEP. AES provides very strong encryption using a completely different ciphering algorithm to TKIP and WEP. The developing IEEE 802.11i wireless security standard has specified AES as an eventual replacement for TKIP and WEP.
Radio Interface Multicast Cipher Mode – Selects an encryption method for the global key used for multicast and broadcast traffic, which is supported by all wireless clients. • WEP: WEP is the first generation security protocol used to encrypt data crossing the wireless medium using a fairly short key. Communicating devices must use the same WEP key to encrypt and decrypt radio signals. WEP has many security flaws, and is not recommended for transmitting highly-sensitive data.
System Configuration Status Information The Status page includes information on the following items: Menu Description AP Status Displays configuration settings for the basic system and the wireless interface 5-40 Station Status Shows the wireless clients currently associated with the access point 5-42 Event Logs Shows log messages stored in memory 5-44 Access Point Status The AP Status window displays basic system configuration settings, as well as the settings for the wireless interface.
Status Information AP System Configuration – The AP System Configuration table displays the basic system configuration settings: • System Up Time: Length of time the management agent has been up. • MAC Address: The physical layer address for this device. • System Name: Name assigned to this system. • System Contact: Administrator responsible for the system. • IP Address: IP address of the management interface for this device.
System Configuration Station Status The Station Status window shows the wireless clients currently associated with the SMC2555W-AG. The Station Configuration page displays basic connection information for all associated stations as described below. Note that this page is automatically refreshed every five seconds. 5-42 • Station Address: The MAC address of the wireless client. • Authenticated: Shows if the station has been authenticated. The two basic methods of authentication supported for 802.
Status Information completed, stations can associate with the current access point, or reassociate with a new access point. The association procedure allows the wireless system to track the location of each mobile client, and ensure that frames destined for each client are forwarded to the appropriate access point. • Forwarding Allowed: Shows if the station has passed 802.1x authentication and is now allowed to forward traffic to the access point. • Key Type: Displays “Open System” or “Shared Key.
System Configuration Event Logs The Event Logs window shows the log messages generated by the access point and stored in memory. The Event Logs table displays the following information: 5-44 • Log Time: The time the log message was generated. • Event Level: The logging level associated with this message. For a description of the various levels, see “logging level” on page 5-22. • Event Message: The content of the log message.
Chapter 6 Command Line Interface Using the Command Line Interface Accessing the CLI When accessing the management interface for the SMC2555W-AG over a direct connection to the console port, or via a Telnet connection, the access point can be managed by entering command keywords and parameters at the prompt. Using the access point’s command-line interface (CLI) is very similar to entering commands on a UNIX system.
Command Line Interface After connecting to the system through the console port, the login screen displays: Username: admin Password: SMC Enterprise AP# Note: Command examples shown later in this chapter abbreviate the console prompt to “SMC-AP” for simplicity. Telnet Connection Telnet operates over the IP transport protocol. In this environment, your management station and any network device you want to manage over the network must have a valid IP address.
Entering Commands After you configure the access point with an IP address, you can open a Telnet session by performing these steps. 1. From the remote host, enter the Telnet command and the IP address of the device you want to access. 2. At the prompt, enter the user name and system password. The CLI will display the “SMC Enterprise AP#” prompt to show that you are using executive access mode (i.e., Exec). 3. Enter the necessary commands to complete your desired tasks. 4.
Command Line Interface You can enter commands as follows: • To enter a simple command, enter the command keyword. • To enter commands that require parameters, enter the required parameters after the command keyword. For example, to set a password for the administrator, enter: SMC Enterprise AP(config)#username smith Minimum Abbreviation The CLI will accept a minimum number of characters that uniquely identify a command. For example, the command “configure” can be entered as con.
Entering Commands list of valid keywords for a specific command.
Command Line Interface Negating the Effect of Commands For many configuration commands you can enter the prefix keyword “no” to cancel the effect of a command or reset the configuration to the default value. For example, the logging command will log system messages to a host server. To disable logging, specify the no logging command. This guide describes the negation effect for all applicable commands. Using Command History The CLI maintains a history of commands that have been entered.
Entering Commands Exec Commands When you open a new console session on access point, the system enters Exec command mode. Only a limited number of the commands are available in this mode. You can access all other commands only from the configuration mode. To access Exec mode, open a new console session with the user name “admin.” The command prompt displays as “SMC Enterprise AP#” for Exec mode.
Command Line Interface To enter the Global Configuration mode, enter the command configure in Exec mode. The system prompt will change to “SMC Enterprise AP(config)#” which gives you access privilege to all Global Configuration commands. SMC-AP#configure SMC-AP(config)# To enter Interface mode, you must enter the “interface ethernet,” or “interface wireless a,” or “interface wireless g” command while in Global Configuration mode.
Entering Commands Keystroke Function Ctrl-N Enters the next command line in the history buffer. Ctrl-P Shows the last command. Ctrl-R Repeats current command line on a new line. Ctrl-U Deletes the entire line. Ctrl-W Deletes the last word typed. Esc-B Moves the cursor backward one word. Esc-D Deletes from the cursor to the end of the word. Esc-F Moves the cursor forward one word. Delete key or backspace key Erases a mistake when entering a command.
Command Line Interface Command Groups The system commands can be broken down into the functional groups shown below.
General Commands General Commands Command Function Mode Page configure Activates global configuration mode Exec 6-11 end Returns to Exec mode GC, IC 6-12 exit Returns to the previous configuration mode, or exits the CLI any 6-12 ping Sends ICMP echo request packets to another node on the network Exec 6-13 reset Restarts the system Exec 6-14 show history Shows the command history buffer Exec 6-14 show line Shows the configuration settings for the console port Exec 6-15 config
Command Line Interface end This command returns to the previous configuration mode. Default Setting None Command Mode Global Configuration, Interface Configuration Example This example shows how to return to the Configuration mode from the Interface Configuration mode: SMC-AP(if-ethernet)#end SMC-AP(config)# exit This command returns to the Exec mode or exits the configuration program.
General Commands ping This command sends ICMP echo request packets to another node on the network. Syntax ping • host_name - Alias of the host. • ip_address - IP address of the host. Default Setting None Command Mode Exec Command Usage • Use the ping command to see if another site on the network can be reached. • The following are some results of the ping command: – Normal response - The normal response occurs in one to ten seconds, depending on network traffic.
Command Line Interface reset This command restarts the system or restores the factory default settings. Syntax reset • board - Reboots the system. • configuration - Resets the configuration settings to the factory defaults, and then reboots the system. Default Setting None Command Mode Exec Command Usage When the system is restarted, it will always run the Power-On Self-Test.
General Commands Command Usage • The history buffer size is fixed at 10 commands. • Use the up or down arrow keys to scroll through the commands in the history buffer. Example In this example, the show history command lists the contents of the command history buffer: SMC-AP#show history config exit show history SMC-AP# show line This command displays the console port’s configuration settings. Command Mode Exec Example The console port settings are fixed at the values shown below.
Command Line Interface System Management Commands These commands are used to configure the user name, password, system logs, browser management options, clock settings, and a variety of other system information.
System Management Commands Command Function logging level Defines the minimum severity level for GC event logging Mode Page 6-23 logging facility-type Sets the facility type for remote logging GC of syslog messages 6-24 show logging Displays the state of logging Exec 6-25 System Clock Sets the system clock via an NTP/ SNTP server sntp-server ip Specifies one or more time servers GC 6-25 sntp-server enable Accepts time from the specified time servers GC 6-26 sntp-server date-time Manu
Command Line Interface Default Setting SMC Enterprise AP Command Mode Global Configuration Example SMC Enterprise AP(config)#prompt RD2 RD2(config)# system name This command specifies or modifies the system name for this device. Use the no form to restore the default system name. Syntax system name name no system name name - The name of this host.
System Management Commands username This command configures the user name for management access. Syntax username name name - The name of the user. (Length: 3-16 characters, case sensitive) Default Setting smcadmin Command Mode Global Configuration Example SMC-AP(config)#username bob SMC-AP(config)# password After initially logging onto the system, you should set the password. Remember to record it in a safe place. Use the no form to reset the default password.
Command Line Interface Example SMC-AP(config)#password smc SMC-AP(config)# ip http port This command specifies the TCP port number used by the web browser interface. Use the no form to use the default port. Syntax ip http port port-number no ip http port port-number - The TCP port to be used by the browser interface.
System Management Commands Default Setting Enabled Command Mode Global Configuration Example SMC-AP(config)#ip http server SMC-AP(config)# Related Commands ip http port (page 6-20) logging on This command controls logging of error messages; i.e., sending debug or error messages to memory. The no form disables the logging process. Syntax logging on no logging on Default Setting None Command Mode Global Configuration Command Usage The logging process controls error messages saved to memory.
Command Line Interface logging host This command specifies a syslog server host that will receive logging messages. Use the no form to remove syslog server host. Syntax logging host no logging host • host_name - The name of a syslog server. (Range: 1-20 characters) • host_ip_address - The IP address of a syslog server. Default Setting None Command Mode Global Configuration Example SMC-AP(config)#logging host 10.1.0.
System Management Commands Example SMC-AP(config)#logging console SMC-AP(config)# logging level This command sets the minimum severity level for event logging. Syntax logging level Default Setting Error Command Mode Global Configuration Command Usage Messages sent include the selected level down to Alert level. Level Argument Description Alerts Immediate action needed Critical Critical conditions (e.g.
Command Line Interface Example SMC-AP(config)#logging level alert SMC-AP(config)# logging facility-type This command sets the facility type for remote logging of syslog messages. Syntax logging facility-type type - A number that indicates the facility used by the syslog server to dispatch log messages to an appropriate service. (Range: 16-23) Default Setting 16 Command Mode Global Configuration Command Usage The command specifies the facility type tag sent in syslog messages. (See RFC 3164.
System Management Commands show logging This command displays the logging configuration.
Command Line Interface Default Setting 137.92.140.80 192.43.244.18 Command Mode Global Configuration Command Usage When SNTP client mode is enabled using the sntp-server enable command, the sntp-server ip command specifies the time servers from which the access point polls for time updates. The access point will poll the time servers in the order specified until a response is received. Example SMC-AP(config)#sntp-server ip 10.1.0.
System Management Commands Command Mode Global Configuration Command Usage The time acquired from time servers is used to record accurate dates and times for log events. Without SNTP, the access point only records the time starting from the factory default set at the last bootup (i.e., 00:14:00, January 1, 1970). Example SMC-AP(config)#sntp-server enable SMC-AP(config)# Related Commands sntp-server ip (page 6-25) show sntp (page 6-29) sntp-server date-time This command sets the system clock.
Command Line Interface Related Commands sntp-server enable (page 6-26) sntp-server daylight-saving This command sets the start and end dates for daylight savings time. Use the no form to disable daylight savings time. Syntax sntp-server daylight-saving no sntp-server daylight-saving Default Setting Disabled Command Mode Global Configuration Command Usage The command sets the system clock back one hour during the specified period.
System Management Commands sntp-server timezone This command sets the time zone for the access point’s internal clock. Syntax sntp-server timezone hours - Number of hours before/after UTC. (Range: -12 to +12 hours) Default Setting None Command Mode Global Configuration Command Usage This command sets the local time zone relative to the Coordinated Universal Time (UTC, formerly Greenwich Mean Time or GMT), based on the earth’s prime meridian, zero degrees longitude.
Command Line Interface Example SMC-AP#show sntp SNTP Information ========================================================= Service State : Enabled SNTP (server 1) IP : 137.92.140.80 SNTP (server 2) IP : 192.43.244.18 Current Time : 08 : 04, Jun 20th, 2003 Time Zone : +8 (TAIPEI, BEIJING) Daylight Saving : Enabled, from Jun, 1st to Sep, 1st ========================================================= SMC-AP# show system This command displays basic system configuration settings.
System Management Commands Example SMC-AP#show system System Information =========================================================== Serial Number : A252014354 System Up time : 0 days, 1 hours, 28 minutes, 9 seconds System Name : Enterprise AP System Location : System Contact : Contact System Country Code : 99 - NO_COUNTRY_SET MAC Address : 00-30-F1-71-D6-40 IP Address : 192.168.1.1 Subnet Mask : 255.255.255.0 Default Gateway : 0.0.0.
Command Line Interface SNMP Commands Controls access to this access point from management stations using the Simple Network Management Protocol (SNMP), as well as the hosts that will receive trap messages.
SNMP Commands • ro - Specifies read-only access. Authorized management stations are only able to retrieve MIB objects. • rw - Specifies read/write access. Authorized management stations are able to both retrieve and modify MIB objects. Default Setting • public - Read-only access. Authorized management stations are only able to retrieve MIB objects. • private - Read/write access. Authorized management stations are able to both retrieve and modify MIB objects.
Command Line Interface Command Mode Global Configuration Example SMC-AP(config)#snmp-server contact Paul SMC-AP(config)# Related Commands snmp-server location (page 6-36) snmp-server enable server This command enables SNMP management access and also enables this device to send SNMP traps (i.e., notifications). Use the no form to disable SNMP service and trap messages.
SNMP Commands Related Commands snmp-server host (page 6-35) snmp-server host This command specifies the recipient of an SNMP notification. Use the no form to remove the specified host. Syntax snmp-server host no snmp-server host • host_ip_address - IP of the host (the targeted recipient). • host_name - Name of the host. (Range: 1-20 characters) • community-string - Password-like community string sent with the notification operation.
Command Line Interface Example SMC-AP(config)#snmp-server host 10.1.19.23 batman SMC-AP(config)# Related Commands snmp-server enable server (page 6-34) snmp-server location This command sets the system location string. Use the no form to remove the location string. Syntax snmp-server location text no snmp-server location text - String that describes the system location.
Flash/File Commands show snmp This command displays the SNMP configuration settings. Command Mode Exec Example SMC-AP#show snmp SNMP Information ============================================ Service State : Enable Community (ro) : ***** Community (rw) : ***** Location : WC-19 Contact : Paul Traps : Enabled Host Name/IP : 10.1.19.23 Trap Community : ***** ============================================= SMC-AP# Flash/File Commands These commands are used to manage the system code or configuration files.
Command Line Interface bootfile This command specifies the image used to start up the system. Syntax bootfile filename - Name of the image file. Default Setting None Command Mode Exec Command Usage • The file name should not contain slashes (\ or /), the leading letter of the file name should not be a period (.), and the maximum length for file names is 32 characters. (Valid characters: A-Z, a-z, 0-9, “.”, “-”, “_”) • If the file contains an error, it cannot be set as the default file.
Flash/File Commands copy This command copies a boot file, code image, or configuration file between the access point’s flash memory and a FTP/TFTP server. When you save the configuration settings to a file on a FTP/TFTP server, that file can later be downloaded to the access point to restore system operation. The success of the file transfer depends on the accessibility of the FTP/TFTP server and the quality of the network connection.
Command Line Interface server is 255 characters or 32 characters for files on the access point. (Valid characters: A-Z, a-z, 0-9, “.”, “-”, “_”) • Due to the size limit of the flash memory, the access point supports only two operation code files. • The system configuration file must be named “syscfg” in all copy commands. Example The following example shows how to upload the configuration settings to a file on the TFTP server: SMC-AP#copy config tftp TFTP Source file name:syscfg TFTP Server IP:192.168.1.
Flash/File Commands Command Mode Exec Caution: Beware of deleting application images from flash memory. At least one application image is required in order to boot the access point. If there are multiple image files in flash memory, and the one used to boot the access point is deleted, be sure you first use the bootfile command to update the application image file booted at startup before you reboot the access point. Example This example shows how to delete the test.
Command Line Interface Example The following example shows how to display all file information: SMC-AP#dir File Name -------------------------dflt-img.bin syscfg syscfg_bak zz-img.bin Type ---2 5 5 2 File Size ----------1044140 16860 16860 1044140 1048576 byte(s) available SMC-AP# RADIUS Client Remote Authentication Dial-in User Service (RADIUS) is a logon authentication protocol that uses software running on a central server to control access for RADIUS-aware devices to the network.
RADIUS Client radius-server address This command specifies the primary and secondary RADIUS servers. Syntax radius-server address [secondary] • secondary - Secondary server. • host_ip_address - IP address of server. • host_name - Host name of server. (Range: 1-20 characters) Default Setting None Command Mode Global Configuration Example SMC-AP(config)#radius-server address 192.168.1.25 SMC-AP(config)# radius-server port This command sets the RADIUS server network port.
Command Line Interface Example SMC-AP(config)#radius-server port 181 SMC-AP(config)# radius-server key This command sets the RADIUS encryption key. Syntax radius-server [secondary] key • secondary - Secondary server. • key_string - Encryption key used to authenticate logon access for client. Do not use blank spaces in the string.
RADIUS Client Default Setting 3 Command Mode Global Configuration Example SMC-AP(config)#radius-server retransmit 5 SMC-AP(config)# radius-server timeout This command sets the interval between transmitting authentication requests to the RADIUS server. Syntax radius-server [secondary] timeout number_of_seconds • secondary - Secondary server. • number_of_seconds - Number of seconds the access point waits for a reply before resending a request.
Command Line Interface show radius This command displays the current settings for the RADIUS server. Default Setting None Command Mode Exec Example SMC-AP#show radius Radius Server Information ======================================== IP : 192.168.1.25 Port : 181 Key : ***** Retransmit : 5 Timeout : 10 ======================================== Radius Secondary Server Information ======================================== IP : 0.0.0.
802.1x Port Authentication 802.1x Port Authentication The access point supports IEEE 802.1x access control for wireless clients. This control feature prevents unauthorized access to the network by requiring a 802.1x client application to submit a user name and password for authentication. Client authentication is then verified via by a RADIUS server using EAPOL (Extensible Authentication Protocol Over LAN) before the access point grants client access to the network. Command Function Mode Page 802.
Command Line Interface Command Function Mode Page macauthentication session-timeout Sets the interval at which associated GC clients will be re-authenticated with the RADIUS server authentication database 6-55 show authentication Shows all 802.1x authentication settings, as well as the address filter table 6-56 Exec 802.1x This command configures 802.1x as optionally supported or as required for wireless clients. Use the no form to disable 802.1x support. Syntax 802.
802.1x Port Authentication authentication process (i.e., the access point does NOT initiate 802.1x authentication). For stations initiating 802.1x, only those stations successfully authenticated are allowed to access the network. For those stations not initiating 802.1x, access to the network is allowed after successful 802.11 association. • When 802.1x is required, the access point enforces 802.1x authentication for all 802.11 associated stations. If 802.
Command Line Interface Command Usage • The access point uses EAPOL (Extensible Authentication Protocol Over LANs) packets to pass dynamic unicast session and broadcast keys to wireless clients. The 802.1x broadcast-key-refresh-rate command specifies the interval after which the broadcast keys are changed. The 802.1x session-key-refresh-rate command specifies the interval after which unicast session keys are changed.
802.1x Port Authentication Example SMC-AP(config)#802.1x session-key-refresh-rate 5 SMC-AP(config)# 802.1x session-timeout This command sets the time period after which a connected client must be re-authenticated. Use the no form to disable 802.1x re-authentication. Syntax 802.1x session-timeout no 802.1x session-timeout seconds - The number of seconds. (Range: 0-65535) Default 0 (Disabled) Command Mode Global Configuration Example SMC-AP(config)#802.
Command Line Interface Default allowed Command Mode Global Configuration Example SMC-AP(config)#address filter default denied SMC-AP(config)# Related Commands address filter entry (page 6-52) show authentication (page 6-56) address filter entry This command enters a MAC address in the filter table. Syntax address filter entry • mac-address - Physical address of client. (Enter six pairs of hexadecimal digits separated by hyphens; e.g., 00-90-D1-12-AB-89.
802.1x Port Authentication • An entry in the address table may be allowed or denied access depending on the global setting configured for the address entry default command. Example SMC-AP(config)#address filter entry 00-70-50-cc-99-1a allowed SMC-AP(config)# Related Commands address filter default (page 6-51) show authentication (page 6-56) address filter delete This command deletes a MAC address from the filter table. Syntax address filter delete mac-address - Physical address of client.
Command Line Interface mac-authentication server This command sets address filtering to be performed with local or remote options. Use the no form to disable MAC address authentication. Syntax mac-authentication server [local | remote] • local - Authenticate the MAC address of wireless clients with the local authentication database during 802.11 association. • remote - Authenticate the MAC address of wireless clients with the RADIUS server during 802.1x authentication.
802.1x Port Authentication mac-authentication session-timeout This command sets the interval at which associated clients will be re-authenticated with the RADIUS server authentication database. Use the no form to disable reauthentication. Syntax mac-authentication session-timeout seconds - Re-authentication interval.
Command Line Interface show authentication This command shows all 802.1x authentication settings, as well as the address filter table. Command Mode Exec Example SMC-AP#show authentication Authentication Information ========================================================= MAC Authentication Server : REMOTE MAC Auth Session Timeout Value : 1 secs 802.1x : SUPPORTED Broadcast Key Refresh Rate : 5 min Session Key Refresh Rate : 5 min 802.
Filtering Commands Filtering Commands The commands described in this section are used to filter communications between wireless clients, control access to the management interface from wireless clients, and filter traffic using specific Ethernet protocol types.
Command Line Interface Command Usage This command can disable wireless-to-wireless communications between clients via the access point. However, it does not affect communications between wireless clients and the wired network. Example SMC-AP(config)#filter local-bridge SMC-AP(config)# filter ap-manage This command prevents wireless clients from accessing the management interface on the access point. Use the no form to disable this filtering.
Filtering Commands filter ethernet-type enable This command checks the Ethernet type on all incoming and outgoing Ethernet packets against the protocol filtering table. Use the no form to disable this feature. Syntax filter ethernet-type enable no filter ethernet-type enable Default Disabled Command Mode Global Configuration Command Usage This command is used in conjunction with the filter ethernet-type protocol command to determine which Ethernet protocol types are to be filtered.
Command Line Interface filter ethernet-type protocol This command sets a filter for a specific Ethernet type. Use the no form to disable filtering for a specific Ethernet type. Syntax filter ethernet-type protocol no filter ethernet-type protocol protocol - An Ethernet protocol type.
Filtering Commands show filters This command shows the filter options and protocol entries in the filter table.
Command Line Interface Interface Commands The commands described in this section configure connection parameters for the Ethernet port and wireless interface.
Interface Commands Command Function Mode Page speed Configures the maximum data rate at which a station can connect to the access point IC-W 6-73 channel Configures the radio channel IC-W 6-74 turbo Configures turbo mode to use IC-W faster data rate 6-75 ssid Configures the service set identifier IC-W 6-76 beacon-interval Configures the rate at which beacon signals are transmitted from the access point IC-W 6-76 dtim-period Configures the rate at which stations in sleep mode must wake
Command Line Interface 6-64 Command Function Mode Page key Sets the keys used for WEP encryption IC-W 6-82 transmit-key Sets the index of the key to be used for encrypting data frames sent between the access point and wireless clients IC-W 6-83 transmit-power Adjusts the power of the radio IC-W signals transmitted from the access point 6-84 turbo Configures turbo mode to use IC-W faster data rate max-association Configures the maximum IC-W number of clients that can be associated with the
Interface Commands Command Function Mode Page show interface wireless Shows the status for the wireless interface Exec 6-93 show station Shows the wireless clients associated with the access point Exec 6-94 interface This command configures an interface type and enters interface configuration mode. Syntax interface > • ethernet - Interface for wired network. • wireless - Interface for wireless clients. • a - 802.11a radio interface. • g - 802.11g radio interface.
Command Line Interface dns server This command specifies the address for the primary or secondary domain name server to be used for name-to-address resolution. Syntax dns primary-server dns secondary-server • primary-server - Primary server used for name resolution. • secondary-server - Secondary server used for name resolution. • server-address - IP address of domain-name server.
Interface Commands ip address This command sets the IP address for the (10/100Base-TX) Ethernet interface. Use the no form to restore the default IP address. Syntax ip address no ip address • ip-address - IP address • netmask - Network mask for the associated IP subnet. This mask identifies the host address bits used for routing to specific subnets. • gateway - IP address of the default gateway Default Setting IP address: 192.168.1.1 Netmask: 255.255.255.
Command Line Interface Example SMC-AP(config)#interface ethernet Enter Ethernet configuration commands, one per line. SMC-AP(if-ethernet)#ip address 192.168.1.2 255.255.255.0 192.168.1.253 SMC-AP(if-ethernet)# Related Commands ip dhcp (page 6-68) ip dhcp This command sets the IP address for the currently selected VLAN interface. Use the no form to restore the default IP address.
Interface Commands broadcast periodically by this device in an effort to learn its IP address. (DHCP values can include the IP address, subnet mask, and default gateway.) Example SMC-AP(config)#interface ethernet Enter Ethernet configuration commands, one per line. SMC-AP(if-ethernet)#ip dhcp SMC-AP(if-ethernet)# Related Commands ip address (page 6-67) shutdown This command disables the Ethernet interface. To restart a disabled interface, use the no form.
Command Line Interface Example The following example disables the Ethernet port. SMC-AP(if-ethernet)#shutdown SMC-AP(if-ethernet)# speed-duplex This command configures the speed and duplex mode of a given interface when autonegotiation is disabled. Use the no form to restore the default.
Interface Commands show interface ethernet This command displays the status for the Ethernet interface. Syntax show interface [ethernet] Default Setting Ethernet interface Command Mode Exec Example SMC-AP#show interface ethernet Ethernet Interface Information ======================================== IP Address : 192.168.1.1 Subnet Mask : 255.255.255.0 Default Gateway : 192.168.1.253 Primary DNS : 192.168.1.55 Secondary DNS : 10.1.0.
Command Line Interface Default Setting None Command Mode Interface Configuration (Wireless) Example SMC-AP(config)#interface wireless g SMC-AP(if-wireless g)#description RD-AP#3 SMC-AP(if-wireless g)# closed-system This command closes access to clients without a pre-configured SSID. Use the no form to disable this feature.
Interface Commands speed This command configures the maximum data rate at which a station can connect to the access point. Syntax speed speed - Maximum access speed allowed for wireless clients. (Options: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, 54 Mbps) Default Setting 54 Mbps Command Mode Interface Configuration (Wireless) Command Usage The maximum transmission distance is affected by the data rate. The lower the data rate, the longer the transmission distance.
Command Line Interface channel This command configures the radio channel through which the access point communicates with wireless clients. Syntax channel • channel - Manually sets the radio channel used for communications with wireless clients. (Range: 802.11a 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165 for normal mode, and 42, 50, 58, 152, 160 for turbo mode; 802.11g - 1 to 11) • auto - Automatically selects an unoccupied channel (if available).
Interface Commands Example SMC-AP(if-wireless g)#channel 1 SMC-AP(if-wireless g)# turbo This command sets the access point to an enhanced mode (not regulated in IEEE 802.11a) that provides a higher data rate of up to 108 Mbps. Default Setting Disabled Command Mode Interface Configuration (Wireless - 802.11a) Command Usage • The normal 802.11a wireless operation mode provides connections up to 54 Mbps. Turbo Mode is an enhanced mode (not regulated in IEEE 802.
Command Line Interface ssid This command configures the service set identifier (SSID). Syntax ssid string string - The name of a basic service set supported by the access point. (Range: 1 - 32 characters) Default Setting smc Command Mode Interface Configuration (Wireless) Command Usage Clients that want to connect to the wireless network via an access point must set their SSIDs to the same as that of the access point.
Interface Commands Command Mode Interface Configuration (Wireless) Command Usage The beacon signals allow wireless clients to maintain contact with the access point. They may also carry power-management information. Example SMC-AP(if-wireless g)#beacon-interval 150 SMC-AP(if-wireless g)# dtim-period This command configures the rate at which stations in sleep mode must wake up to receive broadcast/multicast transmissions.
Command Line Interface indicates that the access point will save all broadcast/ multicast frames for the Basic Service Set (BSS) and forward them after every second beacon. • Using smaller DTIM intervals delivers broadcast/multicast frames in a more timely manner, causing stations in Power Save mode to wake up more often and drain power faster. Using higher DTIM values reduces the power used by stations in Power Save mode, but delays the transmission of broadcast/multicast frames.
Interface Commands collisions due to high network utilization, try setting the fragment size to send smaller fragments. This will speed up the retransmission of smaller frames. However, it is more efficient to set the fragment size larger if very little or no interference is present because it requires overhead to send multiple frames.
Command Line Interface RTS frame, the station sends a CTS frame to notify the sending station that it can start sending data. • Access points contending for the wireless medium may not be aware of each other. The RTS/CTS mechanism can solve this “Hidden Node” problem. Example SMC-AP(if-wireless g)#rts-threshold 256 SMC-AP(if-wireless g)# authentication This command defines the 802.11 authentication type allowed by the access point.
Interface Commands Example SMC-AP(if-wireless g)#authentication shared SMC-AP(if-wireless g)# Related Commands encryption (page 6-81) key (page 6-82) encryption This command defines whether or not WEP encryption is used to provide privacy for wireless communications. Use the no form to disable encryption. Syntax encryption no encryption key-length - Size of encryption key.
Command Line Interface • Note that WEP protects data transmitted between wireless nodes, but does not protect any transmissions over your wired network or over the Internet. Example SMC-AP(if-wireless g)#encryption 128 SMC-AP(if-wireless g)# Related Commands key (page 6-82) key This command sets the keys used for WEP encryption. Use the no form to delete a configured key. Syntax key no key index • • • • index - Key index. (Range: 1-4) size - Key size.
Interface Commands specify the key length, and use the key command to configure at least one key. • If WEP is enabled, all wireless clients must be configured with the same shared keys to communicate with the access point.
Command Line Interface that it sends to client devices. Other keys can be used for decryption of data from clients. • When using IEEE 802.1x, the access point uses a dynamic WEP key to encrypt unicast and broadcast messages to 802.1x-enabled clients. However, because the access point sends the WEP keys during the 802.1x authentication process, these keys do not have to appear in the client’s WEP key list.
Interface Commands have to ensure that high strength signals do not interfere with the operation of other radio devices in your area. Example SMC-AP(if-wireless g)#transmit-power half SMC-AP(if-wireless g)# max-association This command configures the maximum number of clients that can be associated with the access point at the same time. Syntax max-association count - Maximum number of associated stations.
Command Line Interface multicast-cipher This command defines the cipher algorithm used for broadcasting and multicasting when using Wi-Fi Protected Access (WPA) security. Syntax multicast-cipher • AES - Advanced Encryption Standard • TKIP - Temporal Key Integrity Protocol • WEP - Wired Equivalent Privacy Default Setting WEP Command Mode Interface Configuration (Wireless) Command Usage • WPA enables the access point to support different unicast encryption keys for each client.
Interface Commands • TKIP defends against attacks on WEP in which the unencrypted initialization vector in encrypted packets is used to calculate the WEP key. TKIP changes the encryption key on each packet, and rotates not just the unicast keys, but the broadcast keys as well. TKIP is a replacement for WEP that removes the predictability that intruders relied on to determine the WEP key.
Command Line Interface Command Usage Wi-Fi Protected Access (WPA) provides improved data encryption, which was weak in WEP, and user authentication, which was largely missing in WEP. WPA uses the following security mechanisms. Enhanced Data Encryption through TKIP WPA uses Temporal Key Integrity Protocol (TKIP). TKIP provides data encryption enhancements including per-packet key hashing (i.e.
Interface Commands wpa-mode This command specifies whether Wi-Fi Protected Access (WPA) is to use 802.1x dynamic keys or a pre-shared key. Syntax wpa-mode • dynamic - WPA with 802.1x dynamic keys. • pre-shared-key - WPA with a pre-shared key. Default Setting dynamic Command Mode Interface Configuration (Wireless) Command Usage • When the WPA mode is set to “dynamic,” clients are authenticated using 802.1x via a RADIUS server. Each client has to be WPA-enabled or support 802.
Command Line Interface wpa-preshared-key This command defines a Wi-Fi Protected Access (WPA) preshared-key. Syntax wpa-preshared-key • type - Input format. (Options: ASCII, HEX) • value - The key string. For ASCII input, use 5/13 alphanumeric characters for 64/128 bit strings. For HEX input, use 10/26 hexadecimal digits for 64/128 bit strings.
Interface Commands wpa-psk-type This command defines the Wi-Fi Protected Access (WPA) preshared-key type. Syntax wpa-psk-type type - Input format.
Command Line Interface shutdown This command disables the wireless interface. Use the no form to restart the interface.
Interface Commands show interface wireless This command displays the status for the wireless interface. Syntax show interface wireless • a - 802.11a radio interface. • g - 802.11g radio interface. Command Mode Exec Example SMC-AP#show interface wireless g Wireless Interface Information ========================================================= ----------------Identification--------------------------Description : Enterprise 802.
Command Line Interface show station This command shows the wireless clients associated with the access point. Command Mode Exec Example SMC-AP#show station 802.
IAPP Commands IAPP Commands The command described in this section enables the protocol signaling required to ensure the successful handover of wireless clients roaming between different 802.11f-compliant access points. In other words, the 802.11f protocol can ensure successful roaming between access points in a multi-vendor environment. iapp This command enables the protocol signaling required to hand over wireless clients roaming between different 802.11f-compliant access points.
Command Line Interface VLAN Commands The access point can enable the support of VLAN-tagged traffic passing between wireless clients and the wired network. Up to 64 VLAN IDs can be mapped to specific wireless clients, allowing users to remain within the same VLAN as they move around a campus site. When VLAN is enabled on the access point, a VLAN ID (a number between 1 and 4095) can be assigned to each client after successful authentication using IEEE 802.1x and a central RADIUS server.
VLAN Commands vlan This command enables VLANs for all traffic. Use the no form to disable VLANs. Syntax vlan enable no vlan Default Disabled Command Mode Global Configuration Command Description • When VLANs are enabled, the access point tags frames received from wireless clients with the VLAN ID configured for each client on the RADIUS server. If the VLAN ID has not been configured for a client on the RADIUS server, then the frames are tagged with the access point’s native VLAN ID.
Command Line Interface native-vlanid This command configures the native VLAN ID for the access point. Syntax native-vlanid vlan-id - Native VLAN ID. (Range: 1-64) Default Setting 1 Command Mode Global Configuration Command Usage When VLANs are enabled on the access point, a VLAN ID (a number between 1 and 4095) can be assigned to each client after successful authentication using IEEE 802.1x and a central RADIUS server.
Appendix A Troubleshooting Check the following items before you contact local Technical Support. 1. If wireless clients cannot access the network, check the following: • Be sure the access point and the wireless clients are configured with the same Service Set ID (SSID). • If authentication or encryption are enabled, ensure that the wireless clients are properly configured with the appropriate authentication or encryption keys.
Troubleshooting 2. If the access point cannot be configured using the Telnet, a web browser, or SNMP software: • Be sure to have configured the access point with a valid IP address, subnet mask and default gateway. • If VLANs are enabled on the access point, the management station should be configured to send tagged frames with a VLAN ID that matches the access point’s native VLAN (default VLAN 1, page 5-13).
Troubleshooting 4. If you forgot or lost the password: • Set the access point to its default configuration by pressing the reset button on the back panel for 5 seconds or more. Then use the default user name “smcadmin” with the password “admin” to access the management interface. 5. If all other recovery measure fail, and the access point is still not functioning properly, take any of these steps: • Reset the access point’s hardware using the console interface, web interface, or through a power reset.
Troubleshooting Maximum Distance Table Important Notice Maximum distances posted below are actual tested distance thresholds. However, there are many variables such as barrier composition and construction and local environmental interference that may impact your actual distances and cause you to experience distance thresholds far lower than those posted below. 802.
Appendix B Cables and Pinouts Twisted-Pair Cable Assignments Caution: DO NOT plug a phone jack connector into the RJ-45 port. Use only twisted-pair cables with RJ-45 connectors that conform with FCC standards. For 10/100BASE-TX connections, a twisted-pair cable must have two pairs of wires. Each wire pair is identified by two different colors. For example, one wire might be red and the other, red with white stripes. Also, an RJ-45 connector must be attached to both ends of the cable.
Cables and Pinouts 10/100BASE-TX Pin Assignments Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections: 100-ohm Category 3 or better cable for 10 Mbps connections, or 100-ohm Category 5 or better cable for 100 Mbps connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet). The RJ-45 port on the access point is wired with MDI pinouts.
Twisted-Pair Cable Assignments Straight-Through Wiring Because the 10/100 Mbps port on the access point uses an MDI pin configuration, you must use “straight-through” cable for network connections to hubs or switches that only have MDI-X ports. However, if the device to which you are connecting supports auto-MDIX operation, you can use either “straight-through” or “crossover” cable.
Cables and Pinouts Console Port Pin Assignments The DB-9 DCE serial port on the front panel of the SMC2555W-AG is used to connect to the access point for out-of-band console configuration. The on-board menu-driven configuration program can be accessed from a terminal, or a PC running a terminal emulation program. The pin assignments used to connect to the serial port are provided in the following tables.
Console Port Pin Assignments Serial Cable Signal Directions for DB-9 Ports DB-9 to DB-9 AP Terminal or PC 1 2 3 4 5 6 7 8 9 Reserved Reserved Reserved Reserved 1 2 3 4 5 6 7 8 9 Serial Cable Signal Directions for DB-25 Ports DB-9 to DB-25 AP Terminal or PC 1 2 3 4 5 6 7 8 9 Reserved Reserved Reserved Reserved 8 3 2 20 7 6 4 5 22 B-5
Cables and Pinouts B-6
Appendix C Specifications General Specifications Maximum Channels 802.11a: US & Canada: 13 (normal mode), 5 (turbo mode) Japan: 4 (normal mode), 1 (turbo mode) ETSI: 11 channels (normal mode), 4 (turbo mode) 802.11g: FCC/IC: 1-11, ETSI: 1-13, France: 10-13, MKK: 1-14 Maximum Clients 64 Operating Range See “Maximum Distance Table” on page A-4 Data Rate 802.11a: Normal Mode: 6, 9, 12, 18, 24, 36, 48, 54 Mbps per channel Turbo Mode: 12, 18, 24, 36, 48, 72, 96, 108 Mbps per channel 802.
Specifications Operating Frequency 802.11a: 5.15 ~ 5.25 GHz (lower band) US/Canada, Japan 5.25 ~ 5.35 GHz (middle band) US/Canada 5.725 ~ 5.825 GHz (upper band) US/Canada 5.50~ 5.70 GHz Europe 802.11b: 2.4 ~ 2.4835 GHz (US, Canada, ETSI) 2.4 ~ 2.497 GHz (Japan) Power supply Input: 100-240 AC, 50-60 Hz Output: 3.3 VDC, 4A Power consumption: 13.2 watts PoE (DC) Input voltage: 48 volts, 0.27A, 12.96 watts Note: Power can also be provided to the access point through the Ethernet port based on IEEE 802.
General Specifications Humidity 15% to 95% (non-condensing) Compliances IEC 61000-4-2/3/4/6/11 EMC Compliance (Class B) FCC Class B (US) ICES-003 (Canada) VCCI (Japan) RCR STD-33A Radio Signal Certification FCC Part 15.247 (2.4GHz) FCC part 15 15.407(b), CISPR 22-96 RSS-210 (Canada) EN 55022, EN55024, EN 300.328 EN 300 826, EN 61000-3-2, EN61000-3-3 ETSI300.328; ETS 300 826 (802.11b) MPT RCR std.33 (D33 1~13 Channel, T66 Channel 14) Safety CSA/NTRL (CSA 22.2 No.
Specifications Sensitivity IEEE 802.11a Modulation/Rates BPSK (6 Mbps) Sensitivity (GHz - dBm) 5.15-5.250 5.25-5.350 5.50-5.700 5.725-5.825 -88 -88 -88 -88 BPSK (9 Mbps) -87 -87 -87 -87 QPSK (12 Mbps) -86 -86 -86 -86 QPSK (18 Mbps) -84 -84 -84 -84 16 QAM (24 Mbps) -82 -81 -81 -81 16 QAM (36 Mbps) -80 -79 -78 -78 64 QAM (48 Mbps) -73 -73 -73 -73 64QAM(54 Mbps) -70 -70 -69 -67 IEEE 802.
General Specifications Transmit Power IEEE 802.11a Data Rate Maximum Output Power (GHz - dBm) 5.15-5.250 5.25-5.350 6 Mbps 17 17 17 17 9 Mbps 17 17 17 17 12 Mbps 17 17 17 17 8 Mbps 17 17 17 17 24 Mbps 17 17 17 17 36 Mbps 17 17 17 17 48 Mbps 17 17 17 17 54 Mbps 12 17 17 16 IEEE 802.11g Data Rate 5.50-5.700 5.725-5.825 Maximum Output Power (GHz - dBm) 2.412 2.417~2.467 2.
Specifications C-6
Glossary 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3 or better UTP cable. 100BASE-TX IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5 or better UTP cable. Access Point An internetworking device that seamlessly connects wired and wireless networks. Access points attached to a wired network, support the creation of multiple radio cells that enable roaming throughout a facility.
Glossary Backbone The core infrastructure of a network. The portion of the network that transports information from one central location to another central location where it is unloaded onto a local system. Basic Service Set (BSS) A set of 802.11-compliant stations and an access point that operate as a fully-connected wireless network. Beacon A signal periodically transmitted from the access point that is used to identify the service set, and to maintain contact with wireless clients.
Glossary Extended Service Set (ESS) More than one wireless cell can be configured with the same Service Set Identifier to allow mobile users can roam between different cells with the Extended Service Set. Extensible Authentication Protocol (EAP) An authentication protocol used to authenticate network clients. EAP is combined with IEEE 802.
Glossary IEEE 802.11b A wireless standard that supports wireless communications in the 2.4 GHz band using Direct Sequence Spread Spectrum (DSSS). The standard provides for data rates of 1, 2, 5.5, and 11 Mbps. IEEE 802.11g A wireless standard that supports wireless communications in the 2.4 GHz band using supports high-speed communications in the 5 GHz band using Orthogonal Frequency Division Multiplexing (OFDM). The standard provides for data rates of 6, 9, 11, 12, 18, 24, 36, 48, 54 Mbps. IEEE 802.
Glossary Network Time Protocol (NTP) NTP provides the mechanisms to synchronize time across the network. The time servers operate in a hierarchical-master-slave configuration in order to synchronize local clocks within the subnet and to national time standards via wire or radio. Open System A security option which broadcasts a beacon signal including the access point’s configured SSID.
Glossary Problem.” If the packet size is smaller than the preset RTS Threshold size, the RTS/CTS mechanism will NOT be enabled. Service Set Identifier (SSID) An identifier that is attached to packets sent over the wireless LAN and functions as a password for joining a particular radio cell; i.e., Basic Service Set (BSS). Session Key Session keys are unique to each client, and are used to authenticate a client connection, and correlate traffic passing between a specific client and the access point.
Glossary Trivial File Transfer Protocol (TFTP) A TCP/IP protocol commonly used for software downloads. Virtual LAN (VLAN) A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network. A VLAN serves as a logical workgroup with no physical barriers, and allows users to share information and resources as though located on the same LAN. Wi-Fi Protected Access WPA employs 802.
Glossary Glossary-8
Index Numerics 802.
Index F factory defaults restoring 5-21, 6-14 filter 5-13, 6-51 address 5-9, 6-51 between wireless clients 5-15, 6-57 local bridge 5-15, 6-57 local or remote 5-9, 6-54 management access 5-15, 6-58 protocol types 5-15, 6-59 VLANs 5-14, 6-96 firmware displaying version 5-20, 6-31 upgrading 5-19, 5-20, 6-39 fragmentation 6-78 G gateway address 4-3, 5-6, 6-2, 6-67 H IEEE 802.
Index N network topologies infrastructure 3-3 infrastructure for roaming 3-4 O OFDM 1-1 open system 4-9, 5-31, 6-72 operating frequency C-2 P package checklist 1-2 password configuring 5-18, 6-19 management 5-18, 6-19 pin assignments console port B-4 DB-9 port B-4 PoE 1-6 specifications C-2 power connection 2-1 Power over Ethernet See PoE power supply, specifications C-2 PSK 5-37, 6-89 R radio channel 802.11a interface 5-27, 6-74 802.
Index system log enabling 5-22, 6-21 server 5-22, 6-22 system software, downloading from server 5-19, 6-39 T Telnet for managenet access 6-2 Temporal Key Integrity Protocol See TKIP time zone 5-24, 6-29 TKIP 5-37, 6-86 transmit power, configuring 5-27, 6-84 trap destination 5-17, 6-35 trap manager 5-17, 6-35 troubleshooting A-1 U upgrading software 5-19, 6-39 Index-4 user name, manager 5-18, 6-19 user password 5-18, 6-19 V VLAN configuration 5-14, 6-97 native ID 5-14, 6-98 W WEP 5-33, 6-81 configuring
FOR TECHNICAL SUPPORT, CALL: From U.S.A. and Canada (24 hours a day, 7 days a week) (800) SMC-4-YOU; (949) 679-8000; Fax: (949) 679-1481 From Europe (8:00 AM - 5:30 PM UK Time) 44 (0) 118 974 8700; Fax: 44 (0) 118 974 8701 INTERNET E-mail addresses: techsupport@smc.com european.techsupport@smc-europe.com support@smc-asia.com Driver updates: http://www.smc.com/index.cfm?action=tech_support_drivers_downloads World Wide Web: http://www.smc.com http://www.smc-europe.com http://www.smc-asia.
