x900 Series Switch Hardware Reference AT-8948 x900-48FE x900-48FE-N AT-9924T AT-9924SP AT-9924T/4SP AT-9924Ts x900-24XT x900-24XT-N
x900 Series Switch Hardware Reference Document Number C613-03092-00 REV D © 2003-2006 Allied Telesis, Inc. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc. Allied Telesis, Inc. reserves the right to change specifications and other information in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis, Inc.
Hardware Reference 1 Contents Devices Covered by this Document ................................................................... 3 Why You Should Read this Document ............................................................... 3 Hardware Overview .......................................................................................... 4 Common Traits ........................................................................................... 4 Mounting system ..........................................
2 x900 Series Switch Cables ............................................................................................................ RS-232 Terminal and Modem Cables ........................................................ RJ-45 to DB9 female terminal cable .................................................... RJ-45 to DB9 male modem cable ....................................................... Cables for RJ-45 Ethernet LAN Interfaces .................................................. Pin assignments .
Hardware Reference 3 Devices Covered by this Document This Hardware Reference includes information on these devices: ■ AT-8948 ■ x900-48FE ■ x900-48FE-N ■ AT-9924T ■ AT-9924SP ■ AT-9924T/4SP ■ AT-9924Ts ■ x900-24XT ■ x900-24XT-N ■ AT-PWR01 (either AC or DC power supply unit) ■ AT-PWR02 (AC power supply unit only) ■ AT-FAN01 (fan-only module) Why You Should Read this Document Use this document to familiarise yourself with the x900 Series switches and hardware features, including pow
4 x900 Series Switch Hardware Overview This section provides details about the physical characteristics of the following: ■ 48-Port Fast Ethernet Switches • ■ ■ AT-8948 and x900-48 switches Gigabit Switches • AT-9924T switch • AT-9924SP switch • AT-9924T/4SP switch Expandable Gigabit Switches • AT-9924Ts and x900-24XT switches Common Traits Dimensions ■ Height: 44.5 mm, plus 5.
Hardware Reference 5 48-Port Fast Ethernet Switches These Fast Ethernet switches meet the exceptionally high performance demands of high-end applications.
6 x900 Series Switch AT-8948 and x900-48 switches Key features are: ■ Autonegotiating, multi-layer Fast Ethernet switch ■ 48 10BASE-T/100Base-TX ports (RJ-45 connectors), auto MDI/MDI-X, full or half duplex ■ 4-port 1000BASE-X SFP uplink sockets • 1000 MBytes, full duplex ■ Hot-swappable, load sharing PSUs ■ NEBS compliant model x900-48FE-N available ■ Optional AT-ACC01 network processor accelerator card for the AT-8948 switch x900-48FE front panel C613-03092-00 REV D
Hardware Reference 7 Gigabit Switches AT-9900 Series switches are advanced gigabit Ethernet multi-layer switches, perfect for the high-density rack environment where space is at a premium.
8 x900 Series Switch AT-9924T switch Key features are: ■ Autonegotiating, multi-layer gigabit switch ■ 24 10BASE-T/100BASE-TX/1000BASE-T ports (RJ-45 connectors) ■ 4 Small Form Factor Pluggable (SFP) ports (see SFP Ports for speeds) ■ Hot-swappable, load sharing PSUs AT-9924T front panel There can be 24 ports operational at one time. The RJ-45 ports 1 to 4 use the same physical interface as the SFP ports 1 to 4. When an SFP is inserted into an SFP port, the corresponding RJ-45 port is disabled.
Hardware Reference 9 Expandable Gigabit Switches These gigabit link aggregation switches operate with other switches that have 10Mb/100Mb/1Gb/10 Gb Ethernet ports. The AT-9924Ts or x900-24X switches can act as a gigabit server backbone or pass aggregated traffic over its gigabit ports. These switches can also aggregate gigabit desktop user connections and pass traffic to other 10 Gigabit Ethernet equipment.
10 AT-9924Ts and x900-24XT switches x900 Series Switch The unmatched flexibility of x900-24X and AT-9924Ts switches lets you tailor solutions to a wide range of networking needs.
Hardware Reference 11 Switch LEDs The following LEDs report operations and faults on the x900 switches: Fast Ethernet RJ-45 port LEDs ■ Fast Ethernet RJ-45 port LEDs ■ Gigabit RJ-45 port LEDs ■ XFP port LEDs ■ SFP port LEDs ■ System LEDs LED State Description L/A (Link Activity) Green A 100Mbps link has been established. Green flashing 100 Mbps activity is occurring. Amber A 10Mbps link has been established. Amber flashing 10Mbps activity is occurring.
12 x900 Series Switch SFP port LEDs LED State Description L/A (Link Activity) Green On x900-48FE and AT-8948 switches, a 1000Mbps link has been established. Green flashing On x900-48FE and AT-8948 switches, a full duplex activity is occurring at 1000Mbps. Off When an SFP is installed on x900-48FE switches, but a link has not been established. When an SFP is installed on the AT-8948, the link is closed.
Hardware Reference 13 System LEDs LED State Description PSU 1 Green PSU 1 is installed and supplying power to the switch. The voltage output is within specification. PSU 1 is in the right bay when facing the rear of the switch. Red One of the following: • PSU 1 is installed in the switch, and either a fan has failed or the PSU has exceeded its recommended temperature threshold of 75º C (167º F). • A FOM is installed in the switch and a fan has failed. • The bay is empty.
14 x900 Series Switch Using Online Documentation This section contains instructions on how to view online documentation on the CD-ROM. Adobe Acrobat Reader must be installed on your computer to view the documentation; you can install it from the CD. 1. Insert the Documentation and Tools CD in the CD-ROM drive. If the browser menu does not appear, select Run from the Start menu. Then type d:\start.exe (where d: is the CD-ROM drive) in the text box, and click the OK button. 2.
Hardware Reference 15 Using AT-TFTP Server This section explains how to access and use the AT-TFTP Server. You can transfer configuration files as well as download software upgrades with AT-TFTP Server. 1. If AT-TFTP Server has not been installed, install it from the Documentation and Tools CD-ROM. Select AT-TFTP Server from the Start > Programs > Allied Telesis > AT-TFTP Server menu. 2.
16 x900 Series Switch Using Windows Terminal and HyperTerminal You can use a PC running terminal emulation software as the manager console, instead of a terminal. There are many terminal emulation applications available for PCs, but the most readily available are the Terminal and HyperTerminal applications included in Microsoft Windows 98, 2000, and XP Professional. In standard Windows installations, HyperTerminal is available from the Communications submenu.
Hardware Reference C613-03092-00 REV D 17 4. In the COMn Properties dialog box, set port parameters as follows, and click the OK button. 5. From the main HyperTerminal window, select Properties from the File menu. Click the Settings tab, and set the Properties dialog box as follows.
18 x900 Series Switch 6. Click ASCII Setup to display the ASCII Setup dialog box, and ensure the following options are not selected: • Echo typed characters locally • Append line feeds to incoming line ends Set other parameters as necessary and click the OK buttons on both dialog boxes to close them. 7. Save the current session by selecting Save from the File menu on the main HyperTerminal window. This creates a connection icon with the name you assigned in the HyperTerminal group.
Hardware Reference 19 How the Switch Starts Up When the switch starts up following a power cycle or an operator-initiated reboot (using the reset button or restart command), it performs a series of tests and sends messages to the terminal or PC connected to the ASYN0 port. After the switch successfully starts, a prompt is displayed for you to log in. Refer to the Installation and Safety Guide for basic login instructions or to the Getting Started chapter in the Software Reference.
20 x900 Series Switch Regular output The following messages are an example of output from AT-8948, x900-48FE, and AT-9900 switches. INFO: INFO: PASS: INFO: PASS: INFO: INFO: Self tests beginning. RAM test beginning. RAM test, 131072k bytes found. BBR tests beginning. BBR test, 512k bytes found. Self tests complete Downloading switch software. Force EPROM download (Y) ? INFO: Initial download succeeded INFO: Executing configuration script
Hardware Reference 21 Message Description (cont) FAIL: BBR test. Error address = location BBR size/location test failed at the given location. The test at this location failed, indicating the end of memory, but a valid location was discovered in the 255 long words following this location. The BBR system must be replaced. Contact your authorised distributor or reseller. FAIL: BBR test, only 16k bytes found The BBR size/location test completed, but only the displayed amount of memory was found.
22 x900 Series Switch AT-9924Ts and x900-24X Switches This section explains how AT-9924Ts and x900-24X switches start initially, including error messages. The following types of software play key roles during startup. Process flow Overrides Software Description Base Product software that is typically the “preferred” base package installed. It constitutes a feature set—similar to a "release”—and runs the switch. A software licence must be enabled for specific base packages.
Hardware Reference Regular output 23 Bootloader and product software (AlliedWare) display a series of messages similar to those in the following figure during routine startup for AT-9924Ts and x900-24X switches. -----------------------------------------------------------Bootloader v3-00, built 6 Mar 2006 -----------------------------------------------------------Identifying RAM .................................. 512 MB Initial RAM test .................................
24 x900 Series Switch Bootloader messages The following table explains messages that bootloader software displays at initial startup for AT-9924Ts and x900-24X switches. Message Description Bootloader , built Banner that identifies the bootloader software. Identifying RAM...512 MB or Identifying RAM...failed The switch contains the amount of memory indicated. If memory identification fails, the switch displays a brief description of the failure and pauses indefinitely.
Hardware Reference 25 Message Description (cont) Bootloader Error Messages AlliedWare messages C613-03092-00 REV D WARNING: Base package start-up failed too many times The base package has a problem that prevents it from starting up. The switch starts up the fallback software. WARNING: Fallback start-up failed too many times The fallback software has a problem that prevents it from starting up. The switch shifts to bootloader software and displays a bootloader prompt.
26 x900 Series Switch Message Description (cont) Validating package licence...done or Validating package licence...failed Whether a valid licence has been found for the base package. Verify licence, version, and switch model and contact your authorised distributor or reseller if necessary. Not displayed for fallback. Installing product_apps.img ...done or Installing product_apps.img < bytes>...
Hardware Reference 27 Message Description (cont) ERROR: Failed to extract product_apps.img from package to RAM The product application image could not be extracted from the package file because the package file is corrupt or there is not enough RAM. Manually restart the switch with fallback software (for details, see “Overrides” on page 22), and install another base package. If this error occurs while rebooting from fallback, contact your authorised distributor or reseller.
28 x900 Series Switch Types of SFP transceivers Speed and duplex settings differ depending on the type of SFP transceiver installed in it. ■ For an SFP port with an approved fibre SFP transceiver, the speed and duplex settings are fixed at 1000Mbps full duplex autonegotiation.
Hardware Reference 29 Management Ports The following management ports let you configure, monitor, and upgrade the switch: ■ RS-232 Terminal Port (ASYN0) ■ Out-of-Band Ethernet Management Port (AT-9924Ts and x900-24X switches only) RS-232 Terminal Port (ASYN0) The RS-232 ASYN0 port is standard for the x900 switches, and connects them to a management device for initial configuration. This port allows the software on the switch to be accessed from a terminal or a PC running terminal emulation software.
30 x900 Series Switch Cables This section describes the following: ■ RS-232 Terminal and Modem Cables ■ Cables for RJ-45 Ethernet LAN Interfaces ■ Cable Guidelines ■ Troubleshooting Cables RS-232 Terminal and Modem Cables The terminal and modem cables described in this section are: ■ RS-232 RJ-45 to DB9 female terminal cable ■ DCE RS-232 terminal port RJ-45 to DB9 male modem cable The following figures show pin wiring diagrams to connect a standard VT100 compatible terminal or modem to ASYN0.
Hardware Reference 31 RJ-45 to DB9 male modem cable RJ-45 (to switch) DB9 Male (to modem) 7 1 6 3 2 3 2 5 4 not connected 4 5 1 6 not connected 7 8 8 9 not connected Note Cable version 1.0 RJ45DB9M_x900 For more information on pin assignments for the RS-232 port, see “RS-232 Terminal Port (ASYN0)” on page 29. Cables for RJ-45 Ethernet LAN Interfaces A twisted pair cable with four pairs and RJ-45 connectors must be used for 10BASE-T/100BASE-TX/1000BASE-T connections.
32 x900 Series Switch 1000BASE straight-through cable For 1000BASE network connections, all four pairs are used and the cable is wired in a straight-through configuration. You can use this cable with the software test facility to test 1000BASE network ports. The following table lists pin assignments for a 10/100/1000BASE-T RJ-45 four pair straight-through cable.
Hardware Reference 33 Cable Guidelines The following table lists port, connector, and cable combinations for switches and expansion modules (XEMs).
34 x900 Series Switch Troubleshooting Cables Cable test The virtual cable test facility diagnoses cable faults and the approximate distance to them on Gigabit Ethernet RJ-45 ports for the following switches: ■ AT-9924T ■ AT-9924T/4SP ■ x900-24X See “Test Facility” on page 43 for more information or the Test Facility chapter in the Software Reference. Not all copper SFPs support this feature; however, those listed in “SFP ports” on page 42 do support it.
Hardware Reference 35 Power Supply Units (PSUs) Two power supply bays are at the rear of the x900 chassis. Each switch is supplied with a single power supply unit (PSU), either AC or DC. Depending on the model, the switch also has a fan-only module (FOM) or a blanking panel: ■ The AT-8948, AT-9924T/4SP, and x900-24X switches have a PSU and a FOM installed. ■ The AT-9924T, AT-9924SP, and x900-48FE switches have a PSU and a blanking panel installed.
36 x900 Series Switch Approved PSUs and FOM LEDs on the PSU and FOM Product numbers for the power supply unit (PSU) and the fan-only module (FOM) that can be fitted in the switches are: ■ AT-PWR01(either AC or DC power supply unit) ■ AT-PWR02 (AC power supply unit only) Excludes the AT-9924Ts and x900-24X switches ■ AT-FAN01 (fan-only module) The following table describes how LEDs on power supply units and fan-only modules report faults and operational activities.
Hardware Reference Verifying installation 37 To confirm that the network processor accelerator card is installed and operating correctly, check that the switch has recognised it. Turn on the switch and enter the show system command to display system information. The following figure is an example of output from the show system command for the AT-9924T/4SP model.
38 x900 Series Switch If there is no entry for the accelerator card, then the switch’s boot process has not detected the card. The most likely cause is that the card is not correctly plugged into the slot on the switch’s base board. Displaying information about the card To display information about the status and memory of a network processor accelerator card on AT-8948 and AT-9924T/4SP models, use the show switch accelerator command.
Hardware Reference Inserting and removing a CFlash card 39 You can insert the card into the CompactFlash slot at any time; it takes about two seconds to initialise. The following CLI message confirms that the card has been inserted: Info (1106257): Compact flash card inserted. The following message confirms that the card is ready to use: Info (1106268): Compact flash card initialisation successful.
40 x900 Series Switch The following is example output from the show cflash test command when a test is running. Test Progress Starting cluster Ending cluster Current cluster Passed clusters number Passed sectors number = 700 = 1700 = 1185 = 485 = 1940 Failed clusters number = 0 Failed sectors number = 0 Used Clusters encountered = 0 Duration................ 4417 ms Error messages are displayed when a file write fails. Failure could be because of the card being removed or an error in the card itself.
Hardware Reference Displaying data about an SD card 41 To display information about a Secure Digital card, including card size, file count, and volume label, insert the card and enter the command: show card The following figure is an example of output from the show card command. Volume label ......... Files total size ..... Used space ........... Free space ........... Total space ..........
42 x900 Series Switch Warning Only authorised service personnel should install DIMMs. Opening the switch’s lid may cause personal injury from electric shock and could damage the switch. Verifying DIMM installation The switch is unlikely to boot unless the DIMM is correctly installed. You will not be able to issue any diagnostic commands, and will have to rely solely on LED fault codes.
Hardware Reference 43 Product No. Media Type Description (cont) AT-SPLX40/ 1550 1000BASE-LX 1550nm SM fiber up to 40km, LC connector AT-SPZX80 1000BASE-ZX 1550nm, 80km with 9µm SM fiber, LC connector AT-SPZX80/ xxxx 1000BASE-ZX CWDM Wavelengths of 1610nm to 1470nm (20nm intervals) and 1310nm, 80km with 9 micron SM fiber, LC connector. Where xxxx can be: 1610 1590 1570 1550 1530 1510 1490 1470 Both ends of an individual fibre must use SFPs of the same wavelength.
44 x900 Series Switch Testing Ethernet LAN Ports A crossover cable is required to run an Ethernet LAN test. How to make a suitable cable is described in “Cables for RJ-45 Ethernet LAN Interfaces” on page 31. To start the test, loop a four-pair crossover or straight-through cable between two RJ-45 ports and enter the enable test interface=all command. Interfaces connected by crossover cables are tested. If a test fails, contact your authorised distributor or reseller.
Hardware Reference 45 For AT-9924Ts and x900-X24 switches, the following prompt is displayed: Boot fallback software (Y)? Press Ctrl+D to enable diagnostics mode. Press Ctrl+D just once to ensure you send no other characters to the switch. One of the following menus is displayed depending on the switch model. When you see the menu, you know that the terminal is connected. Menu for AT-8948, x900-48FE, and AT-9900 switches. * * * Diagnostic Mode * * * version: Nov 10 2005 11:08:34 Main Menu: 0. Restart 1.
46 x900 Series Switch Troubleshooting This section provides information on how to troubleshoot the x900 Series switch to resolve the following basic problems: What to check first L/A LED on a port is off ■ L/A LED on a port is off ■ Power LED is off ■ Fault LED is on ■ Check power cord connections. ■ Check that the power supply voltage is stable. ■ Check that the correct data cables are used and that their connections are secure. ■ Make sure that other network devices work properly.
Hardware Reference 47 Follow these suggestions to resolve the problem: Fault LED is on 1. Check that the power cord connections are secure. 2. Check that all switches and circuit protection devices are in the “on” position. 3.
48 x900 Series Switch For More Information Document sets The Documentation and Tools CD-ROM bundled with each switch contains the complete document set for x900 Series switch and the power supply units, as well as tools for switch management.
