User Guide 3Com IntelliJack Switch NJ240FX http://www.3com.com/ http://esupport.3com.com Published March 2005 User Guide version 1.
3Com Corporation ■ 350 Campus Drive ■ Marlborough, Massachusetts ■ 01752 ■ U.S.A. Copyright © 2005 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
CONTENTS INSTALLING THE NJ240FX About the NJ240FX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Mounting the IntelliJack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Advanced Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Event Alerts 802.1X Settings System Log Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Configuration Tab . . . . . . . . . . . . .
1 INSTALLING THE NJ240FX INTELLIJACK The 3Com NJ240FX IntelliJack is a 4-port, managed Ethernet switch that fits into any standard electrical wall outlet or data port opening. It brings switching capabilities for up to four networking devices, such as computer, printers, and Voice Over IP (VoIP) telephones to a single fiber uplink to the network. All ports feature 10/100 Mbps auto-negotiation. Power to the IntelliJack is provided through a power supply internal to the unit.
2 CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK You can manage the NJ240FX using the included Central Configuration Manager. You can also use a supported SNMP management console as you would with any managed device on your network, but greater management and control is available through the Configuration Manager software.
About the NJ240FX About the NJ240FX 3 The following diagram shows the front and rear views of the IntelliJack: 1 RJ-45 switched PAN (personal area network) ports Four 10/100 Mbps auto-negotiation ports, which the IntelliJack configures for 10 Mbps or 100 Mbps connections automatically. 2 Port LEDs and corresponding port numbers Indicate network link status of each of the four RJ-45 PAN ports. 3 LAN LED Indicates the link status of the LAN connection (fiber uplink).
4 CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK Before You Begin Before you begin installation, register your product at: http://eSupport.3com.com. The IntelliJack is available in three connector types: -LC (3CRNJ240FXLCTAA-75), -SC (3CRNJ240FXSCTAA-75), and -ST (3CRNJ240FXSTTAA-75). Before you begin the installation, familiarize yourself with the following items, which are included with the IntelliJack: • NJ240FX IntelliJack.
Mounting the IntelliJack Setting up the Power Supply 5 Power to the IntelliJack Switch NJ240FX is provided via AC power. It has an internal power supply that can accept 100~240V AC power. A power connector is supplied that can be securely plugged into the unit. CAUTION: The supplied AC power cable is the only approved power cord that can be used with the unit and is required to maintain proper strain relief of the assembly and AC power cord.
6 CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK 2 Remove any shipping tape from the unit and separate the metal plate from the main unit. Separate the plastic housing cable tray from the main unit by sliding it downward towards the four downstream ports and then away from the main unit. 3 Route the two fiber cables through the rectangular opening directly above the UP arrow indicator from the backside of the metal mounting plate (side opposite the metal mounting post).
Mounting the IntelliJack 7 8 Reassemble the plastic cable tray to the main housing in the reverse order from step 2. NOTE: Care should be taken when reassembling the plastic cable tray to the main housing so as not to damage the four installation guide hooks. 9 If the pass-thru feature is required, route the existing female RJ45 connector and cable through the same rectangular opening in the metal mounting plate. Again ensure you have allowed yourself enough room to terminate the connection.
8 CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK 13 Align the main housing mounting hole with the metal mounting boss on the metal mounting plate and secure with the supplied long oval head machine screw. NOTE: An access hole is provided for installations that require the supplied AC power cord to be routed back into the NEMA box. Place the AC power cord between the metal and plastic housing cable tray and route through the lower rectangular opening in the metal mounting plate.
Checking the LEDs Checking the LEDs 9 You can verify the NJ240FX installation by checking the LEDs. LED Description n n On—the IntelliJack is connected to the network and a link has been established. Off—there is no connection to the network. (LAN) n (Power) n n n (Power-forwarding) 4, 3, 2, 1 PAN PORTS n n On—the IntelliJack switch is receiving power. When you first connect power to the IntelliJack, there is a delay of approximately 5 seconds.
10 CHAPTER 1: INSTALLING THE NJ240FX INTELLIJACK
2 INSTALLING THE CONFIGURATION MANAGERS Once you have installed the NJ240FX hardware, you need to configure it for use on your particular network. To configure the NJ240FX, install the Local and Central Configuration managers. NOTE: You will use the Local Configuration Manager for initial configuration of the NJ240FX on your network. It’s usually easiest if you load this software on a laptop and use it to configure IntelliJacks as you install them.
12 CHAPTER 2: INSTALLING THE CONFIGURATION MANAGERS Installing the Local and Central Configuration Managers Run the following steps to install the Configuration Manager software: 1 Insert the NJ240FX CD into your Windows 2000, Windows XP Pro, or Windows NT computer. 2 If your computer is configured to Auto-Play CDs, the installation will start automatically. If not, double-click the setup.exe icon on the CD. 3 Click Next to continue. 4 Carefully read the license agreement.
3 Initializing the IntelliJack USING THE LOCAL CONFIGURATION MANAGER Once you have installed the NJ240FX hardware on your network and the Local Configuration Manager software on your computer, you need to perform an initial configuration of the IntelliJack. 1 The first step is to connect your computer to the NJ240FX that you are installing.
14 CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER application. If this computer has more than one network interface, it may be necessary to specify the correct interface number. You can use the Windows IPCONFIG DOS command to assist you in determining the correct interface number. 6 Click OK, and you will see this window: 7 The MAC address, Serial Number, and Firmware Version of the currently connected NJ240FX will appear at the top of the window.
Setting Advanced Options 15 the IP Address, Subnet Mask, and Default Gateway information in the appropriate fields. NOTE: By default, the NJ240FX is configured to automatically obtain an IP address from a DHCP server. If no DHCP server exists, or if the NJ240FX cannot obtain an IP address, it will default back to its previously configured static IP address. If it had previously been assigned an IP address, it will default to that one. If it did not, it will default to the static IP address of 192.168.1.
16 CHAPTER 3: USING THE LOCAL CONFIGURATION MANAGER 1 Select the Advanced tab on the IntelliJack Local Configuration Manager window. 2 To change the IntelliJack’s configuration password, click on the box next to Change Password. Then enter the new password in both password fields. (You must enter the password twice to ensure you type it correctly.) The password you select can be any combination of letters and numbers between 8 and 32 characters.
4 USING THE CENTRAL CONFIGURATION MANAGER You should use the Local Configuration Manager to initialize each of the IntelliJacks installed on your network. Once you have completed that step, you can manage all of them with the Central Configuration Manager. Install this program on any computer on your network you want to use as a central management console (See chapter 2, “Installing the Configuration Managers” for help). You can use the same machine that has your SNMP-based management platform.
18 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 1 When you launch the Central Configuration Manager, you will see a welcome window like this one: You should select the type of IntelliJack switch you would like to manage with the CCM software. If you are managing an NJ240FX IntelliJack, then enter the password (“password” by default) you specified when you first installed the IntelliJack switch. Entering a password is not required to communicate with other IntelliJacks.
Discovering IntelliJacks on Your Network 19 2 Click OK, and you will see a window similar to this one if the CCM is operating in IPv4 mode and you have previously discovered IntelliJacks: If the CCM is operating in IPv6 mode, it will look like this:
20 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 3 Select Discovery from the Devices menu or click the Discover button on the toolbar to load the following window (this window will load automatically the first time you run the Central Configuration Manager).
Discovering IntelliJacks on Your Network 21 NOTE: The default subnets are the ones your machine is connected to. 4 You can discover new devices based on a specific subnet or on a specific range of IP addresses. a To discover devices by subnet, select that option on the screen. Click the Add button to add a new subnet to the discovery list. The following box will appear: Fill in the Subnet and Mask fields and click OK.
22 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER NOTE: Discovered devices are automatically added to the default database. This default database will open automatically when you launch the Central Configuration Manager. If you like, you can keep several database files, each with its own list of devices. For example, you may want a separate database for each subnet you manage. To save a database file or open another database file, select the Open Database or Save Database As option from the File menu.
Viewing Device Properties 23 2 Select Property from the Devices menu or from the toolbar. You can also open this window by right-clicking your mouse and selecting Property.
24 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER If the CCM is operating in IPv6 mode, the screen will look like this: General Tab 3 With the General tab selected, you can view and edit information about the device such as the IP address, subnet mask, default gateway, and whether it uses a static IP address or gets its address from a DHCP server. You can also view and edit the IntelliJack’s Group Name and Location. 4 Click Apply to save any changes you make to the fields in this window.
Viewing Device Properties 25 You can double-click on any of the ports to find out more information or configure that particular port. Click OK to save your changes or Cancel to discard them. Product Information 6 Under the Product Information box, you can see the current firmware version of the IntelliJack, the Product Name, and the Serial Number.
26 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Hardware Settings Tab 7 Click on the Hardware Settings tab to view status information about the switch. Several fields in this window can be edited, a few cannot. You can change the values of the fields with drop-down lists: Priority Schedule Policy, LAN Port Egress Mode, LAN Port Ingress Mode, LAN Port Speed/Duplex, Max Frame Size, Counter Mode, and Power Forwarding.
Viewing Device Properties 27 8 Simply select the value you wish to change from the drop-down list of options. NOTE: You can click Apply at any time to save the changes you have made. But be sure to click Apply after you have finished making all your changes. 9 Click the Manage ATU Table button to make changes to the NJ240FX’s ATU table. The screen you see allows you to display all MAC addresses that have been plugged into that IntelliJack or just the ones that you have “locked down” to it.
28 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 10 The IntelliJack also lets you manage its VLAN table. To access the VLAN table, click on the Manage VLAN Table button. The screen you see allows you to display all the VIDs that have been assigned to that IntelliJack. You can refresh the list of VIDs or add to it. You can edit existing VLAN settings, tagging schemes and port associations by clicking the Edit button.
Viewing Device Properties 29 Statistics & Log Tab 11 Click on the Statistics & Log tab. From this view you can see statistics about the number of good or bad packets each port has received and transmitted, based on how you have configured the Counter Mode setting. The bottom half of the window shows Remote MONitoring (RMON) counters for the LAN port and each of the four PAN ports on the IntelliJack.
30 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER You can reset all counters to zero by clicking Clear. To save device data to a log file, click Get Device Log. This will prompt you for a filename and location to save the log file. NOTE: The device log records information regarding watch-dog timer errors or other abnormalities. If, for example, the IntelliJack has unexpectedly rebooted, the event will be recorded in the device log.
Viewing Device Properties 31 16 To edit a Trap Destination, enter the IP address of your SNMP management console in the field. This eliminates the need to build a Trap Destination Table via a Management Information Database (MIB) browser. In order for an SNMP Management Tool to communicate with an NJ240FX in SNMPv3 mode, you will first need to create an SNMPv3 Profile on the NJ240FX.
32 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Advanced Settings Tab 17 Click on the Advanced Settings tab to see the following window: 18 You can view the Event Alert Level and 802.1X Settings configured for this particular NJ240FX. 802.1X is a security protocol for LANs that relies on the Extensible Authentication Protocol (EAP) to pass messages to RADIUS authentication servers. NOTE: For help configuring SNMP and 802.1X settings for your system, see the Changing Device Configuration section.
Viewing Device Properties 33 Different Alert Levels notify you of specific events happening with the IntelliJack.
34 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER System Log Settings Tab 19 Click on the System Log Settings tab to display the following window: 20 If the CCM is operating in IPv6 mode, then the screen will present an IPv6 formatted address field. The NJ240FX will store only one set of System Log server addresses, either an IPv4 set or an IPv6 set. The last type of address that was written to the unit is what will be stored.
Changing Device Configuration Changing Device Configuration 35 Many of the properties that you can view from the Device Property windows can be changed from the Device Configuration window. Here’s how to use this feature: 1 Select one or more IntelliJacks from the devices list. NOTE: It is possible to configure multiple IntelliJacks at the same time. 2 Select Configuration from the Devices menu or the toolbar, or right click on a device and select Configuration from the pop-up menu.
36 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER This window has six tabs across the top--General Configuration, Priority & VLAN Configuration, Security Configuration, SNMP Configuration, Advanced Configuration, and System Log Settings. Check the box next to any setting you want to change from within these five areas. The bottom of the window has buttons labeled Load and Save. The Save operation lets you save an IntelliJack configuration profile.
Changing Device Configuration 37 transmissions in the Property window because it is unlikely that the IntelliJack will drop any Ethernet Packets. If you believe that the IntelliJack is dropping Ethernet packets, you may want to configure the Counter Mode to count received errors (Rx Errors) and transmission collisions (Tx Collisions). This will give you a good sense of whether packets are actually being dropped.
38 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Priority & VLAN Configuration 11 Click the Priority & VLAN Configuration tab along the top of the Device Configuration window to view these settings: Port Based Settings 12 To change the Port Based Settings, first select the Port’s tab you want to make the changes to. 13 To change the Look-up Scheme from the default of Use Both, click the box and select an option from the drop list. Both the Use IEEE 802.
Changing Device Configuration 39 14 The default setting for the Default Priority Level is 802.1p Priority 0 or 1. You can change this setting to Priority 2 or 3, Priority 4 or 5, or Priority 6 or 7. The IntelliJack has four traffic queues with two priorities per queue. The lowest numbers (0 and 1) have the lowest priority. The default priority traffic is called “Best Effort” and serves as a baseline priority for all standard Ethernet traffic.
40 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER In a strict priority scheme (the setting’s other option), all highest priority traffic will be removed from the buffer. After it is removed, the next priority traffic type would be removed, and so on. This ensures that the most important or time critical data is passed first, but it could potentially slow traffic from other ports. 18 You can change the Outgoing (to LAN) tag scheme for the IntelliJack. By default, frames are transmitted unmodified.
Changing Device Configuration 41 Security Configuration 21 Select the Security Configuration tab to set the security options of the IntelliJack. Password 22 You can change the device password (the default password is “password”), and either enable or disable local configuration. NOTE: You should change the password to ensure that no one else can re-configure your system. Make sure you remember the new password you set.
42 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER When the option is set to Disable 802.1X, all packets are processed as a normal Ethernet switch; no 802.1X control applies. With Standard 802.1X selected, control is enabled. Once the device is authorized, the port it connects to is in the authorized state and all packets entering the port are allowed to pass through. When the Secure 802.1X option is selected, control is enabled.
Changing Device Configuration 43 26 To use 802.1X, you must select a RADIUS server to act as authenticator to devices connected to the NJ240FX. To select a Primary or Secondary RADIUS server, click the box and the Configure button. This will open a separate window. In this box you can Enable or Disable the server, enter the server’s IP address and the Shared Secret. 27 To set advanced 802.1X security settings, click the Advanced Settings button in the Security Configuration window.
44 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER SNMP Configuration 28 Click the SNMP Configuration tab to change the SNMP settings of the NJ240FX. 29 Select the desired level of SNMP Management. Depending on the selected level of management, you will need to configure other SNMP Parameters, in order to ensure communication between the IntelliJack and the SNMP Management Tool. 30 You can either Enable or Disable the “Set” operation of the IntelliJack.
Changing Device Configuration 45 • The Link Up Trap signals when then SNMP agent has gone to the “up” state and is now reachable. • An Auth Fail Trap indicates a wrong Community name in the SNMP transmission. • Vendor Specific Traps indicate 802.1X User Login, 802.1X User Logout, and 802.1X Login Failure when the IntelliJack is configured for 802.1X. 33 You can Set Trap Destination by entering the IP address of your SNMP management console.
46 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Advanced Configuration 37 Select the Advanced Configuration tab for this window: Event Alert Levels 38 At the top of this window is a setting to specify the Event Alert Level. The NJ240FX can alert you when specific events occur. While this lets you monitor and respond to network events more quickly, it also creates an additional workload. As a result, the Event Alert Level is initially disabled.
Changing Device Configuration Alert Level Notifying Event Level 2: Allow standard alerts Device Power Failure/Reboot 47 Abnormal Reboot IP Address Change Unauthorized Access Level 3: Allow all alerts Device Power Failure/Reboot Abnormal Reboot IP Address Change Unauthorized Access Normal Reboot NBX phone plugged in NBX phone removed Port Based Controls 39 For the next three settings, first select the port you want to configure. 40 You can turn on Flow Control for a specific port.
48 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER The following chart shows the various options you can choose on a per port basis: Priority Option 0 2 4 6 Multiplier 1 2 4 8 128 Kbps 128 Kbps 256 Kbps 512 Kbps 1 Mb 256 Kbps 256 Kbps 512 Kbps 1 Mb 2 Mb 512 Kbps 512 Kbps 1 Mb 2 Mb 4 Mb 1 Mb 1 Mb 2 Mb 4 Mb 8 Mb 2 Mb 2 Mb 4 Mb 8 Mb 16 Mb 4 Mb 4 Mb 8 Mb 16 Mb 32 Mb 8 Mb 8 Mb 16 Mb 32 Mb 64 Mb Up to 100 Mb Up to 100 Mb Up to 100 Mb Up to 100 Mb Rate limiting
Changing Device Configuration Global Setting Default Value ATU Table Blank VTU Table Blank All RADIUS settings Blank 802.1X Supplicant Status Disabled 802.1X Supplicant User Name and Password Blank Port Setting Default Value State Forwarding Link Auto negotiation Flow Control Off MDI[X] Force MDI Multicast Limit 3% Priority Lookup Tag & IPV4 Port Priority 0 or 1 VLAN ID 1 802.
50 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER System Log Settings Select the System Log Settings tab to view this window: 46 If you are running a Syslog Server on your network, you can configure the NJ240FX to send Syslog messages to this server. You can specify up to two different Syslog servers to receive these messages.
Changing Device Configuration 51 47 When you are finished entering the configuration changes to your IntelliJack, click the OK button and a Configuration Progress dialog box will appear. If you don’t want to apply the changes you made, click Exit to discard those changes and exit the window. 48 If you click Configuration Summary, you will see a summary of all the changes you have made. Enter your password and click Start.
52 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER The Restore operation lets you recover configurations you saved with Backup. When you initiate a Restore, you will be asked for the Secret Key you established with the Backup operation. Finding Computers Connected to NJ240FX Devices Occasionally you may need to find out which IntelliJack a networked device, such as a PC, is connected to. This is one of the many situations where the Location Information field of the NJ240FX can be very useful.
Upgrading the NJ240FX Firmware Upgrading the NJ240FX Firmware 53 You can upgrade the firmware on your NJ240FXs over the network from the Central Configuration Manager. To do so, follow these steps: 1 Select one or more IntelliJacks you want to upgrade. You can select groups of IntelliJacks using one of the grouping options available to you in the drop-down list at the top left corner of the main window. 2 Select Upgrade from the devices menu.
54 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER 5 Select the time to perform the upgrade. You can either send the update file immediately or select a specific time and date to send the file. You may, for example, want to perform an upgrade during off hours such as a weekend. 6 Click Next and a window like this will appear: 7 Review the list of IntelliJacks you want to upgrade. If you want to modify this list, click Cancel and restart the firmware upgrade procedure.
Upgrading the NJ240FX Firmware 55 8 Type your password in the Password field, then click Finish. The Upgrade Progress dialog box will appear.
56 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER Viewing Log Files The Central Configuration Manager creates a log file with details of the firmware upgrades, configuration operations, and alert messages from the IntelliJack. This file is in the Central Configurator\Log subdirectory under the directory where you installed the IntelliJack configuration software. You can the log by selecting Log History from the View menu.
Upgrading the NJ240FX Firmware Viewing and Canceling Scheduled Firmware Upgrades 57 You can select a time and date to send an upgraded firmware image to the IntelliJacks in your network. To view and make changes to the firmware upgrades you have scheduled, follow these steps: 1 Select Manage Schedule from the Tools menu. A window like this will appear: 2 To view the details of a scheduled upgrade, select it from the list and click Show Devices.
58 CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER
A Troubleshooting the NJ240FX If you encounter problems with the IntelliJack: Verify the IntelliJack is receiving power by viewing the Power LED (it should be on). If the Power LED is not on, make sure that: ■ ■ The local power supply is plugged into the IntelliJack and into a working electrical outlet. Verify the IntelliJack is connected to the network properly by viewing the Link LED (it should be on). If the Link LED is not on, make sure the network cable: ■ ■ Is terminated properly.
Troubleshooting the NJ240FX Event/Message Description Solution Amber LED on Port 1 is not on Power is not being forwarded to network device ■ Make sure the cable is properly connected to Port 1 of the IntelliJack. ■ Make sure the cable is properly connected to the powered device. ■ Make sure the IntelliJack is configured to match the cable - either straight through or crossover. ■ Make sure the powered device is IEEE 802.3af compatible.
B Obtaining Support 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site. Register Your Product to Gain Service Benefits To take advantage of warranty and other service benefits, you must first register your product at http://eSupport.3com.
Obtaining Support users will need to apply for a user name and password. A link to software downloads can be found from this http://eSupport.3com.com/ page, or located from the www.3Com.com home page. Software Upgrades are the software releases that follow the software version included with your original product. In order to access upgrades and related documentation you must first purchase a service contract from 3Com or your reseller.
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Obtaining Support Latin America You can obtain support in this region using the following URLs: Spanish speakers, enter the URL: http://lat.3com.com/lat/support/form.html Portuguese speakers, enter the URL: http://lat.3com.com/br/support/form.html English speakers in Latin America should send e-mail to: lat_support_anc@3com.
C Product Specifications Hardware Power consumption <5 watts without power forwarding Maximum 13 watts with power forwarding (depending on the device drawing power) Network Interface 10 Mbps Ethernet 10BASE-T Ethernet IEEE 802.3 industry standard for a 10 Mbps baseband CSMA/CD local area network 100 Mbps Ethernet 100BASE-TX Ethernet IEEE 802.3u industry standard for a 100 Mbps baseband CSMA/CD local area network 100 Mbps Ethernet 100BASE-FX Ethernet IEEE 802.
Product Specifications Power Ratings Input rated 100 - 240 V AC, 50 - 60 Hz, 0.3 A Output rated 48 V DC, 300 mA MIB Support MIB II (RFC 1213) Bridge MIB (RFC 1493) Ether-like MIB (RFC 1643) MIB for MAUs (RFC 2668) MIB for bridge with extensions (RFC 2674) 802.
Features Local power supply Required for networks that do not support Power Over Ethernet Voice Over IP (VoIP) Compatible with VoIP standard. Power forwarding Power forwarding Port number 1 can be used with any standard networking device as well as to power a device such as a VoIP telephone on a network that uses IEEE 802.3af-compatible Power Over Ethernet. RMON Counters InUnicasts Total valid frames received with a unicast Destination Address.
Product Specifications Jabber Total frames received with a length of more than MaxSize octets but with an invalid FCS. Oversize Total frames received with a length of more than MaxSize octets but with a valid FCS. InDiscards Total valid frames received that are discarded due to lack of buffer space. This includes frames discarded at ingress as well as those dropped due to priority and congestion considerations at the output queues.
Excessive Total number of frames not transmitted because the frame experienced 16 transmission attempts and was discarded. The discard will only occur if DiscardExcessive is set to a 1 (in global control register). Multiple Total number of successfully transmitted frames that experienced more than on collision. Single Total number of successfully transmitted frames that experienced exactly one collision.
Product Specifications 70
3COM CORPORATION LIMITED WARRANTY This warranty applies to customers located in the United States, Australia, Canada (except Quebec), Ireland, New Zealand, UK and other English language countries, and countries for which a translation into the local language is not provided.
