Dell™ PowerConnect™ 3048 Systems User's Guide Caution: Safety Instructions Introduction Features Front Panel Indicators Rear Panel Descriptions Management Installation Package Contents Before You Connect to the Network: Mounting-Kit Instructions Connecting the Console Port Password Protection IP Address Assignment Stacking Connecting Devices to the Switch Web Interface Web Pages Home System Manager Port Manager Address Manager Spanning Tree VLAN & CoS Port Trunking Port Mirroring SNMP Multimedia Support Sta
Back to Contents Page Introduction Dell™ PowerConnect™ 3048 Systems User's Guide Features Front Panel Indicators Rear Panel Descriptions Management Features The Dell™ PowerConnect™ 3048 Fast Ethernet Managed Switch offers the following features: l l l l IP Assignment Mode SNMP Host Authorization Table User Authentication Mode — RADIUS Server IP Address, RADIUS Shared Secret, IP Filtering, and Allowed IP Addresses Layer 3 Priority — DiffServ l Configuration File Management l Enhanced Security Administ
l MIB II (RFC1213) l Ethernet Interface MIB (RFC1643) l Bridge MIB (RFC1493) l Enterprise MIB l 4-Group RMON (RFC1757) l Manageable by HP OpenView Front Panel Indicators The front panel of the system contains all of the Ethernet ports and LEDs. As shown in the following figure, there is one system LED, one redundant power supply (RPS) LED, one diagnostic LED, and one LED for each port on the front panel. System LED An LED is used to show the general operating status of the system.
Link/Act Mode Off No 10/100-Mbps link is established. Steady green A link is established on the port. Blinking green There is data transmission on the port. Speed Mode Off A 10-Mbps link is established or no link. Steady green A 100-Mbps link is established on the port. Duplex/Collision Mode Off Steady green Port is operating on Half-Duplex mode or no link. Port is operating on Full-Duplex mode. Blinking green Port is operating on Half-Duplex and a collision occurs.
Menu-Driven Console Interface via Serial Port or Telnet You can also connect a computer or terminal to the serial console port or use Telnet to access the switch. The interface is menu driven so you do not need to use a complex command syntax. The menus are similar to those in the Web interface. For more information, see "Console Interface." SNMP Network Management Platforms You can manage the switch with an SNMP-compatible management station running platforms such as HP OpenView.
Back to Contents Page Installation Dell™ PowerConnect™ 3048 Systems User's Guide Package Contents Before You Connect to the Network: Mounting-Kit Instructions Connecting the Console Port Password Protection IP Address Assignment Stacking Connecting Devices to the Switch Package Contents Before you begin installing the switch, confirm that your package contains the following items: l Switch l Stacking cable l AC power cord l Null modem cable l Self-adhesive rubber pads for desktop installation l
connector, implemented as a data terminal equipment (DTE) connection. To use the console port, you need the following equipment: l A terminal or TTY-compatible terminal, or a PC or portable system with a serial port and the ability to emulate a terminal. l A null modem or crossover RS-232 cable with a female DB-9 connector for the console port on the switch (supplied with the switch). To connect a terminal to the console port, complete the following steps: 1.
NOTE: By using the feature "change IP on fly," the switch does not need to be rebooted for the changes to take effect. 1. From the Main Menu, select System Manager. Press . 2. In the first field, type the correct IP address for this system (consult your network administrator). 3. Enter the address of the default gateway for the network to which the switch is attached. 4. Enter the appropriate network mask for this network (consult your network administrator). 5.
Back to Contents Page Web Interface Dell™ PowerConnect™ 3048 Systems User's Guide Web Pages Port Trunking Home Port Mirroring System Manager SNMP Port Manager Multimedia Support Address Manager Statistics Spanning Tree Save Configuration VLAN & CoS NOTE: The graphics in this section may differ slightly from the graphics on your computer. With web-based management, you can configure the PowerConnect 3048 Fast Ethernet Managed Switch and monitor the system using a web browser.
Home The Home page briefly describes the Web-based management features. System Manager The System Manager page contains all system operations and general information. It includes links to the following options: l General Info — to view general system information and perform general administration. l IP Settings — to view or edit IP parameters. l Security Administration — to select user authentication, enable or disable password protection, filter by IP address.
IP Settings In the IP Settings page, you can manage the IP-related information about the system. The page includes the following editable fields: l IP Address l Default Gateway l Network Mask l IP Assignment Mode — Sets whether IP functionality is enabled through manual (static) configuration or set by Dynamic Host Configuration Protocol (DHCP) or Boot Protocol (BootP). ¡ Manual — Sets static IP address. ¡ BootP — Gets IP address from a BootP server. ¡ DHCP — Gets IP address from a DHCP server.
Security Administration l User Authentication Mode — Selects the authentication or authentication sequence required. ¡ Local Only — The switch authenticates the user. ¡ Local then Remote — The switch attempts to authenticate the user first, and then a RADIUS server attempts to authenticate the user. ¡ Remote then Local — A RADIUS server attempts to authenticate the user first, and then the switch attempts to authenticate the user. ¡ Remote Only — A RADIUS server authenticates the user.
Firmware Upgrade From the Firmware Upgrade page, you can configure the system to download a new version of the management software. You can also set the system to use the new software without overwriting the previous version. See "Software Upgrades" for more information about this process.
Reset Select Reset to reboot the switch. When prompted, confirm that you want to reset the switch. Port Manager The Port Manager contains links to the following options: l Port Settings l GBIC Port Settings On this page, you can view and edit port parameters. For each port number listed under the Port column, you can change the following parameters listed by column name on the screen: l Name — Displays the user-defined label for the port.
l Link — Shows the status of the link: Up or Down. l Admin Enabled — Shows whether a port has been enabled by the network administrator. A network administrator can manually disable a port. l State — Describes the state of the port as determined by the Spanning Tree Protocol. l Operating Parameters — Allows automatic or manual selection of port speed and duplex mode. l Flow Control Enabled — Allows automatic or manual selection of support for flow control.
Static Addresses From the Static Addresses page, you can specify the MAC address and port number of systems that are to remain available to the switch for an indeterminate amount of time. The following options are available: l MAC Address — Allows you to enter the MAC address of a system you want to set as static. l Port Selection — Allows you to select the port associated with that system. l List box — Lists all static addresses.
Address Aging In the Address Aging page, you can specify how long an address stays available to the switch if it is not configured as static. NOTE: The default value is set to 300 seconds (5 minutes). The following option is available: l Aging Time — The time before an address is purged from the system. You can change this value to any number between 10 and 1,000,000 seconds. To save any changes you make in this page, click Apply. To reset these fields to their current value, click Reload.
Spanning Tree The Spanning Tree page contains links to the following pages that allow you to specify the parameters of the spanning tree protocol: NOTE: Spanning Tree is enabled by default. l Bridge Settings l Port Settings Bridge Settings From the Bridge Settings page, you can enable and configure the Spanning Tree. The following options are available: l l Enable — Turns the Spanning Tree on.
l Cost — Assigned to this port for the Spanning Tree Protocol (1- 65536). A port with a lower cost is less likely to be blocked if the Spanning Tree Protocol is detecting network loops. l Fast Link — Immediately enables the port in forwarding state when a link comes up. The port is not part of the Spanning Tree at that time, but will participate in future Spanning Tree resolutions.
2. Check the Remove VLAN box for the VLAN you want to remove. 3. Click Apply. Add VLAN Membership 1. Under the Show VLAN drop-down menu, select the VLAN you want to edit. 2. Change the VLAN member by clicking the port icon until the desired state [T (tagged) or U (untagged)] or blank appears. 3. Click Apply. Remove VLAN Membership 1. Under the Show VLAN drop-down menu, select the VLAN you want to edit. 2. Change the VLAN member by clicking the port icon until the desired state (blank) appears.
In the Default Port CoS page, you can specify the priority for each port on your switch. Layer 3 Priority — DiffServ l l DiffServ — You can change the default Type of Service (ToS) priority by selecting Normal Priority or High Priority for each class of services. This setting leverages the IETF definition of the IPv4 ToS octet in the IP packet-header by using the Differentiated Services Code. Point (DSCP) field (6 bits) classifies packets into any of the 64 possible classes.
NOTICE: Built-in 10/100/1000BASE-T ports cannot be trunked with GBIC ports. To add a port to a trunk, click the toggle button below the port number until the correct trunk number appears. NOTICE: All ports participating in a trunk must be operating in Full Duplex mode. NOTICE: All ports participating in a trunk should have the same VLAN and CoS settings. To save any changes you make in this page, click Apply. To reset these fields to their current value, click Reload.
l Community Table l Host Table l Trap Settings Community Table In the Community Table page, you can create different communities and customize access. The public string has Get privileges by default.
Trap Settings You can enable or disable authentication traps on the Trap Settings page: l Enabled — The system generates an SNMP trap upon a host authorization failure. l Disabled — The system does not generate authentication traps. All hosts in community strings with trap privileges are notified when a trap condition occurs.
l Enabled — The system detects IGMP queries and report packets and manages IP multicast traffic through the switch. l Disabled — The switch forwards traffic and ignores any IGMP requests. Statistics From the Statistics page, you can chart a variety of system data. There are three types of graphs to chose from: Comparison Chart, Group Chart, and History Chart. All charts have a maximum ceiling of 23 1-1. When all of the variables are set, click Draw.
History Chart The History Chart charts one type of statistic for any combination of ports. The chart presents data across a set time period so that you can monitor fluctuations over time. l Statistics — The type of system data to be monitored l Refresh Rate — The time interval between automatic refreshes Counter Reset The Counter Reset page allows you to reset all statistics counters.
Utilization Summary The Utilization Summary page allows you to view (by port) the link status; percent utilization; and ratios of incoming unicast, nonunicast, and error packets. Click the Refresh button to refresh the Utilization Summary page.
Counter Summary The Counter Summary page allows you to view all ports accumulated, unicasts and nonunicasts received and transmitted, and errors received and transmitted. Click the Refresh button to refresh the Counter Summary page. Save Configuration If you make any changes to the system through the Web interface, you must save the changes in the Save Configuration page. The following options are available: l Save Configuration to NVRAM — Saves changes to the system configuration.
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Back to Contents Page Console Interface Dell™ PowerConnect™ 3048 Systems User's Guide User Interface VLAN and CoS Setup Navigating in the Console Interface Port Trunking Password Protection Port Mirroring Main Menu SNMP Management System Manager Multimedia Support Port Manager Statistics Address Manager Save Configuration Spanning Tree NOTE: The graphics in this section may differ slightly from the graphics on your computer.
From the initial welcome screen, you must enter a password to proceed, if password protection is enabled. If password protection is disabled, the Main Menu is displayed and you immediately have access to the switch management interface. By default, password protection is disabled. If enabled, the default password is switch. Main Menu The main menu displays all the submenus and pages that are available.
IP Settings This menu manages the IP-related information about the computer. The IP Settings page includes the following editable fields: l IP address l Network mask l Gateway address Press to save any changes made. NOTE: You must reboot the system from the System Manager/Reset page for the changes to take effect. See "Installation" for more information on installation. Security Admin l User Authentication Mode — Selects the authentication or authentication sequence required.
l Disable Telnet/Web Access (Console Only) — Provides an option to enable or disable Telnet or Web access to the switch. NOTE: The default password is switch.
Firmware Upgrade From the Firmware Upgrade screen, you can configure the system to download a new version of the management software. You can also set the system to use the new software without overwriting the previous version. See "Software Upgrades" for more information about this process.
l Admin — Allows the administrator to enable or disable the port. l State — Displays this port is blocking and forwarding. l Rate/Duplex — Offers the choice of Full, Half, or Auto, which automatically detects the value of the attached device and sets the port duplex mode accordingly. l Flow Ctrl — If enabled, stops the sender from sending data until the receiver can accept it. l Comments — Allows the administrator to name the port or make comments.
Dynamic Addresses The Dynamic Addresses lookup table allows you to view the MAC addresses that are currently in the address database. When addresses are in the database, the packets intended for those addresses are forwarded directly to those ports. You can filter out the table by port, VLAN, and MAC address by checking those fields. Dynamic MAC address learning is enabled by default. This is the standard mode for a network switch.
Static Multicast Groups Membership Static multicast is a way to manage multicast traffic. Each multicast address can be assigned ports that will participate in that multicast group. Ports that are added to a multicast group will forward all multicast packets from the specified multicast address to the other ports in that group. The membership page is where ports are added to multicast groups.
l ¡ Hello Time — The interval between configuration messages sent by the spanning tree protocol. ¡ Max Age — The amount of time before the system discards a configuration message. ¡ Forward Delay — The amount of time the system spends in learning and listening states. ¡ Bridge Priority — The priority setting among other switches in the spanning tree. Disable — Disables the spanning tree protocol on the system.
l CoS Settings l Layer 3 Priority — DiffServ VLAN Administration You can add up to 64 VLANs with unique ID numbers and names. VLAN ID numbers must be in the range of 1 to 4094. Add a VLAN l Type a unique numeric VLAN ID and press . l Type a unique VLAN name and press . Remove a port or an entire VLAN To remove an entire VLAN, position the cursor anywhere on the VLAN ID line, and press . VLAN Membership This matrix allows for real-time management of up to 64 VLANs.
PVID Settings In the PVID Settings screen, you can specify the Port VLAN ID (PVID) for each port on your switch. All untagged packets entering the switch are tagged by default with the ID specified by the port's PVID. CoS Settings Port Priority allows the user to specify which ports have greater precedence in situations where traffic may be buffered in the switch due to congestion. The ports with a setting of "high" will transmit their packets before those with a "normal" setting.
Port Trunking In the Port Trunking page, you can create multiple links between switches that work as one virtual, aggregate link. You can create four trunks at a time, with each trunk containing up to eight ports. Only ports of the same speed can belong to a single trunk: 10/100 Fast Ethernet ports and Gigabit Ethernet ports cannot be in the same trunk.
Port Mirroring From the Port Mirroring menu, you can monitor traffic on a specific port. The switch can monitor only single-direction traffic, either transmission or reception. When port mirroring is enabled, all the transmission or receiving traffic of the mirrored port is forwarded to the mirroring port. The following options are available: l Port Mirroring is — Enables or disables port mirroring. l Source Port — Port from which all traffic will be mirrored to the monitor port.
Community Table In the Community Table page, you can create different communities and customize access. The public string has Get privileges by default. The following options are available: l Community String — Type the name of the community you want to create. l Get — Allows read access to the switch's SNMP information for members of the SNMP community. l Set — Allows write access to the switch's SNMP information for members of the SNMP community.
Trap Settings The Trap Settings page allows you to set up authentication traps. The following options are available: l Authentication Trap ¡ Enabled — The system generates an SNMP trap upon a host authorization failure. ¡ Disabled — The system does not generate authentication traps. All hosts in community strings with trap privileges are notified when a trap condition occurs. Multimedia Support From the multimedia support page, IGMP and High Priority Optimization can be enabled or disabled.
IGMP With Internet Group Management Protocol (IGMP) Snooping, you can configure the switch to forward multicast traffic intelligently. Based on the IGMP query and report messages, the switch forwards traffic only to the ports that request multicast traffic. This prevents the switch from broadcasting the traffic to all ports and possibly disrupting network performance. NOTE: IGMP requires a router that learns about the presence of multicast groups on its subnets and keeps track of group membership.
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Back to Contents Page Software Upgrades Dell™ PowerConnect™ 3048 Systems User's Guide Upgrade Procedure NOTE: Perform the upgrade procedure from the console interface via an RS-232 serial port. When using a Telnet session or Web interface alone, your connection to the switch is not available until the switch has entered forwarding mode. This takes approximately three minutes. The application software is field upgradable. The new software must reside on a TFTP server that can be accessed by the switch.
Back to Contents Page Appendix Dell™ PowerConnect™ 3048 Systems User's Guide VLAN Description Product Information VLAN Examples Returning Items for Warranty Repair or Credit Troubleshooting Before You Call Technical Specifications Contacting Dell Technical Assistance Regulatory Notices Problems With Your Order VLAN Description Packets received by the switch are treated in the following ways: l l When an untagged packet enters a port, the system automatically tags it with the port's default VLA
3. To allow untagged packets to participate in the new VLAN, change the Port VLAN IDs for the relevant ports. Example 2 Example 2 steps through a more elaborate setup illustrating all possible scenarios for a comprehensive understanding of tagged VLANs. 1. Set up VLANs as shown in the following illustration: 2. Configure VLAN membership: This example includes two VLANs, using stack 1 only.
3. Set up the Port VLAN IDs as shown in the following illustration: The specific ports shown in the previous illustration have the following port VLAN ID settings.
Check the following: ¡ ¡ ¡ The cable to connect the switch. Ensure that you are using an RJ-45 (network) cable and not an RJ-11 (telephone) cable. Ensure that the power cord is firmly connected to the relevant switch unit and to the supply outlet. If the connection is secure and there is still no power, you may have a faulty power cord. Verify that there is sufficient space for adequate airflow on both sides of the switch. NOTE: Operating temperature for the switch must not exceed 40ºC.
Environmental Temperature: Operating 0º to 40ºC Storage –20º to 70ºC Relative humidity: Operating 10% to 90% Storage 5% to 90% Technical Assistance If you need help with a technical problem, Dell is ready to assist you. CAUTION: If you need to remove the computer covers, first disconnect the computer power and modem cables from all electrical outlets. 1. Make a copy of the Diagnostics Checklist and fill it out. 2. Use Dell's extensive suite of online services available at Dell Support (support.
portable and desktop computers. When you call AutoTech, use your touch-tone telephone to select the subjects that correspond to your questions. The AutoTech service is available 24 hours a day, 7 days a week. You can also access this service through the technical support service. For the telephone number to call, see the contact numbers for your region. Automated Order-Status Service To check on the status of any Dell products that you have ordered, you can go to support.dell.
Switch Name and Firmware Version: Error message, beep code, or diagnostic code: Description of problem and troubleshooting procedures you performed: Contacting Dell To contact Dell electronically, you can access the following websites: l www.dell.com l support.dell.com (technical support) l premiersupport.dell.
Bermuda General Support 1-800-342-0671 Bolivia General Support toll-free: 800-10-0238 Brazil Website: www.dell.
Home/Small Business Customer Care 3287 5505 Switchboard (Relational) 3287 1200 Fax Switchboard (Relational) 3287 1201 Switchboard (Home/Small Business) 3287 5000 Fax Switchboard (Home/Small Business) 3287 5001 Dominica General Support Dominican Republic General Support 1-800-148-0530 Ecuador General Support toll-free: 999-119 El Salvador General Support 01-899-753-0777 Finland (Helsinki) Website: support.euro.dell.
Small Business Customer Care U.K. Customer Care (dial within U.K. only) Corporate Customer Care Ireland Sales U.K. Sales (dial within U.K. only) Italy (Milan) International Access Code: 00 01 204 4444 0870 906 0010 01 204 4003 01 204 4444 0870 907 4000 SalesFax 01 204 0144 Fax 01 204 5960 Switchboard 01 204 4444 Website: support.euro.dell.com E-mail: support.euro.dell.
Macao Country Code: 853 Technical Support Customer Service (Penang, Malaysia) toll-free: 0800 582 604 633 4949 Transaction Sales toll-free: 0800 581 Malaysia (Penang) Technical Support toll-free: 1 800 888 298 International Access Code: 00 Customer Service 04 633 4949 Country Code: 60 Transaction Sales toll-free: 1 800 888 202 City Code: 4 Corporate Sales toll-free: 1 800 888 213 Mexico Customer Technical Support International Access Code: 00 Country Code: 52 001-877-384-8979 or 001-877-
Fax Switchboard 671 16865 Panama General Support 001-800-507-0962 Peru General Support 0800-50-669 Poland (Warsaw) Website: support.euro.dell.com International Access Code: 011 Country Code: 48 City Code: 22 Portugal International Access Code: 00 E-mail: pl_support@dell.com Customer Service Phone Customer Care 57 95 700 57 95 999 Sales 57 95 999 Customer Service Fax 57 95 806 Reception Desk Fax 57 95 998 Switchboard 57 95 999 E-mail: support.euro.dell.
Sales Switzerland (Geneva) International Access Code: 00 Country Code: 41 City Code: 22 E-mail: swisstech@dell.com E-mail for French-speaking HSB and Corporate Customers: support.euro.dell.com/ch/fr/emaildell/ Technical Support (Home and Small Business) 0844 811 411 Technical Support (Corporate) 0844 822 844 Customer Care (Home and Small Business) 0848 802 202 Customer Care (Corporate) Fax Switchboard Taiwan International Access Code: 002 08 590 05 185 Website: support.euro.dell.
or toll-free: 1-800-879-3355 Dell Outlet Store (Dell refurbished computers) toll-free: 1-888-798-7561 Software and Peripherals Sales toll-free: 1-800-671-3355 Spare Parts Sales toll-free: 1-800-357-3355 Extended Service and Warranty Sales toll-free: 1-800-247-4618 Fax toll-free: 1-800-727-8320 Dell Services for the Deaf, Hard-of-Hearing, or Speech-Impaired toll-free: 1-877-DELLTTY (1-877-335-5889) U.S.
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. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause interference with radio communications.
the limits set by the EPA's ENERGY STAR® Computers program. ENERGY STAR® Emblem The EPA's ENERGY STAR® Computers program is a joint effort between the EPA and computer manufacturers to reduce air pollution by promoting energyefficient computer products. The EPA estimates that use of ENERGY STAR® computer products can save computer users up to two billion dollars annually in electricity costs.
Class B ITE This is a Class B product based on the standard of the Voluntary Control Council for Interference (VCCI) for information technology equipment. If this equipment is used near a radio or television receiver in a domestic environment, it may cause radio interference. Install and use the equipment according to the instruction manual.
Please note that this device has been approved for nonbusiness purposes and may be used in any environment, including residential areas. MIC Class B Regulatory Label If the regulatory label includes the following marking, your computer is a Class B product. Polish Center for Testing and Certification Notice The equipment should draw power from a socket with an attached protection circuit (a 3-prong socket).
If you find a or mark on the regulatory label on the bottom, side, or back panel of your computer, the following section is applicable: NOM Information (Mexico Only) The following information is provided on the device(s) described in this document in compliance with the requirements of the official Mexican standards (NOM): Exporter: Dell Computer Corporation One Dell Way Round Rock, TX 78682 Importer: Dell Computer de México, S.A. de C.V. Paseo de la Reforma 2620 - 11° Piso Col.
Back to Contents Page Caution: Safety Instructions Dell™ PowerConnect™ 3048 Systems User's Guide Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential damage. General l Observe and follow service markings. Do not service any product except as explained in your system documentation. Opening or removing covers that are marked with the triangular symbol with a lightning bolt may expose you to electrical shock.
l Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications. Always follow your local/national wiring rules. l When connecting or disconnecting power to hot-pluggable power supplies, if offered with your system, observe the following guidelines: ¡ Install the power supply before connecting the power cable to the power supply. ¡ Unplug the power cable before removing the power supply.
CAUTION: A qualified electrician must perform all connections to DC power and to safety grounds. All electrical wiring must comply with applicable local or national codes and practices. CAUTION: Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.
