AT-8800 Series Switch Hardware Reference AT-8824 AT-8848
AT-8800 Series Hardware Reference Document Number C613-03066-00 REV D. Copyright © 2005 Allied Telesyn International, Corp. 19800 North Creek Parkway, Suite 200, Bothell, WA 98011, USA. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn. Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice.
Hardware Reference 3 Contents Models Covered By This Reference .................................................................... 4 Why You Should Read This Reference ............................................................... 4 Where To Find More Information ...................................................................... 5 Hardware Description ....................................................................................... 5 Switch Overview ............................................
AT-8800 Series Switch Documentation Roadmap AT-8800 Series General Customer Support AT-8800 Series Safety and Statutory Information Booklet Visit www.alliedtelesyn.co.nz for the latest documentation, FAQs, and support information.
Hardware Reference 5 Where To Find More Information The Documentation and Tools CD-ROM bundled with each switch contains the complete Document Set for AT-8800 Series switches and their expansion options, as well as tools for switch management. This includes: ■ The AT-8800 Series Statutory and Safety Information booklet, which includes important safety information and statutory declarations for AT-8800 Series switches.
AT-8800 Series Switch Dimensions Table 1: Dimensions for AT-8824 and AT-8848. AT-8824 and AT-8848 Height 1U - 44 mm (plus 5.5 mm if the rubber feet are used). Width 440 mm (excluding rack-mounting brackets). Depth 350 mm. Weight Not more than 6 kg excluding power cord.
Hardware Reference 7 Maximum Current Loads AC models • Maximum continuous current draw, 0.7A at 240V, 1.
AT-8800 Series Switch AT-8800 Series Switch Models This section provides hardware descriptions for the individual switch models. AT-8824 (Front Panel Figure 2 on page 8, Rear Panel Figure 3 on page 8) • 24-port 10BASE-T/100BASE-TX (RJ-45 connectors) • 2-port 1000BASE-X (GBIC slots) • Unrestricted 1000BASE-T GBIC use • One DIMM socket for expansion of Synchronous DRAM to 256MB • Compatible with AT-RPS8000 systems • Auto-negotiating Layer 3 Managed Switch Figure 1: Front panel of the AT-8824.
Hardware Reference 9 Online Documentation This section provides a step-by-step guide to accessing online documentation. Adobe Acrobat Reader must be installed to view online documentation. Accessing the CD-ROM and Online Documentation Follow these steps to access the CD-ROM and online documentation: 1. Insert the Documentation and Tools CD-ROM in the CD-ROM drive. 2. If the Welcome screen does not appear. Select "Run" from the Start Menu (Windows 95, 98, 2000 or NT 4.0). Type d:\start.
AT-8800 Series Switch The "Default file transfer directory" field specifies the directory that ATTFTP Server will read from or write to for file requests that do not include a directory specification. To prevent unauthorised access to private directories, enter a path name in the "Restrict to directory" field. AT-TFTP Server will use only the specified directory, even if file requests contain references to other directories. Select "Read only" to prevent files being written to the PC.
Hardware Reference 11 The key to successful use of terminal emulation software with the switch is to configure the software and switch with matching communications parameters. The following procedures describe how to configure Windows Terminal and HyperTerminal for the default RS-232 ASYN0 settings on the switch, but the same principles apply to other terminal emulation programs. To configure Windows HyperTerminal for Windows 95, 98, 2000, & NT 4.0. 1. 2. 3.
AT-8800 Series Switch 5. From the File menu, select: • “Properties” In the Connection Properties dialog box, click the Settings tab and set: 6. • “Function, arrow, and ctrl keys act as” to “Terminal keys” • “Emulation” to VT100. Click “ASCII Setup” to display the ASCII Setup dialog box. Uncheck: • “Echo typed characters locally”. • “Append line feeds to incoming line ends”. Set other parameters as required. • Click “OK” twice to close all dialog boxes.
Hardware Reference 13 7. Save the current session. From the File menu, select: • “Save”. This creates a connection icon with the name you assigned in the HyperTerminal group. To use the configuration: • Double-click the connection icon in the HyperTerminal group. When the HyperTerminal window appears, press: • [Enter] a couple of times. The switch’s log in prompt will appear. Switch Start-up This section outlines the log in and start-up procedures for your switch.
AT-8800 Series Switch See “Using Windows Terminal and Windows Hyperterminal” on page 10 for more information on configuring emulation software. Ensure that any power switches are in the On position and that the switch is receiving power. After the switch has booted, the log in prompt appears. If the log in prompt doesn’t appear, press [Enter] two or three times. When the switch boots for the first time it automatically creates an account with manager privileges.
Hardware Reference 15 Figure 4: Switch start-up messages. INFO: INFO: PASS: INFO: PASS: INFO: INFO: Force INFO: INFO: INFO: Self tests beginning. RAM test beginning. RAM test, 65536k bytes found. BBR tests beginning. BBR test, 128k bytes found. Self tests complete Downloading switch software. EPROM download (Y) ? Initial download succeeded Executing configuration script
AT-8800 Series Switch PASS: RAM test, 65536k bytes found. The RAM test passed, and the indicated amount of memory was found and will be used by the switch. ERROR: RAM test 5. Error address = 00345678. A RAM test failed, at the given address. In the example, it was the fifth test run. The RAM test repeats until it passes, so a number of messages like this may appear. This fault means that the memory system is faulty.
Hardware Reference 17 RS-232 Terminal Port (ASYN0) This section introduces the switch’s RS-232 Terminal Port (ASYN0), including its pin assignment and purpose. The RS-232 ASYN0 Terminal Port is used to connect the switch to a management device for initial configuration and switch management tasks. This allows the switch’s software to be accessed from a terminal, or a PC running terminal emulation software. You can also use ASYN0 to establish a network connection from a remote site using SLIP and a modem.
AT-8800 Series Switch Useful Cables This section describes how to make management, test, and network cables for use with the switch’s RS-232 (ASYN0) and RJ-45 interfaces. RS-232 Terminal and Modem Cables Table 5 on page 18 list the terminal and modem cables described in this section. Table 5: Terminal and modem cable descriptions.
Hardware Reference 19 Figure 7: Pin wiring diagram for a DCE RS-232 Terminal Port (DB9 male connector) male to male modem cable.
AT-8800 Series Switch Pin assignments For twisted pair cables each pair is identified by two different colours. For example, one wire might be red, and the other red with a white stripe. An RJ-45 connector must be fitted to both ends of the cable. Figure 8 on page 20 illustrates the pin layout for RJ-45 connectors. Figure 8: RJ-45 Pin layout.
Hardware Reference 21 Table 8: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover cable . End 1 End 2 Pin Pair Pin Pair 1 Pair 1+ 3 Pair 2+ 2 Pair 1- 6 Pair 2- 3 Pair 2+ 1 Pair 1+ 6 Pair 2- 2 Pair 1- 4 Pair 3+ 7 Pair 4+ 5 Pair 3- 8 Pair 4- 7 Pair 4+ 4 Pair 3+ 8 Pair 4- 5 Pair 3- Test Facility This section introduces the Test Facility. The Test Facility is built into all AT-8800 Series software.
AT-8800 Series Switch All interfaces connected by crossover cables are tested. Test results are displayed with the command: SHOW TEST which produces a display like that shown in Figure 9 on page 22. A more detailed output (with frame counts) can be displayed with the command: SHOW TEST COUNT which is shown in Figure 10 on page 23. Figure 9: Example output from the SHOW TEST command, with a test cable between ports 1 and 4.
Hardware Reference 23 Figure 10: Example output for the SHOW TEST COUNT command, with a test cable between ports 1 and 4.
AT-8800 Series Switch AT-RPS8000 The AT-RPS8000 is a chassis that holds up to four removable AT-PWR8000 RPS units. To provide backup power to AT-8824 and AT-8848 switches, each switch must be connected to an AT-PWR8000 power unit, and the power unit must be installed in an AT-RPS8000 chassis. Table 9 on page 24 lists the RPS connector’s pin numbers and pin functions, as found on AT-8824 and AT-8848 switches. Table 9: RPS Connector Pin Numbers and Functions.
Hardware Reference 25 Specifications Dimensions • Height = 67 mm (plus 5.5 mm if the rubber feet are used) • Width = 440 mm (excluding rack-mounting brackets) • Depth = 360 mm • Weight = 6.76 kg with one AT-PWR8000 installed, 10.21 kg with four AT-PWR8000 power units installed Mounting System • 1.
AT-8800 Series Switch Port, Connector, and Cable Combinations This section provides cabling guidelines for each switch model. Table 11: Cable guidelines for AT-8800 Series switches. Model Port Type Connector Type AT-8824 and AT-8848 10BASE-T/100BASE-TX RJ-45 AT-8824 and AT-8848 1000BASE-X Cable Type1 Maximum Cable Length CAT5 120 m Max CAT5E Varies with GBIC Refer to GBICs user documentation Refer to GBICs user documentation 1. Refer to the IEEE 802.
Hardware Reference 27 Table 13: Port and GBIC LEDs on the AT-8800. LED State Function GBIC L/A Green A 1000 Mbps link is open. The link is operating in full duplex mode. Flashing green 1000 Mbps full duplex activity is occurring. Amber A 1000 Mbps link is open. Flashing amber 1000 Mbps activity is occurring. Green A GBIC is installed and enabled. Amber A GBIC is installed but has not been recognised. Flashing amber A GBIC is installed and enabled, but a Tx fault is occurring.
AT-8800 Series Switch Some common problems and how to solve them Link/Activity LED on any port is off This can indicate: ■ A loose data cable. ■ The device at the other end of the connection is not working properly or is turned off. ■ The data cable is not wired correctly. ■ The network administrator has manually disabled the port through the software. ■ The port’s selected transmission mode does not match that of the attached device. Perform the following steps in sequence: 1.
Hardware Reference 29 Perform the following steps in sequence: 1. Check “LEDs and What They Mean” on page 26 for descriptions and explanations of LED flashing sequences. 2. Reset the switch by pressing the recessed RESET button on the front panel. 3. If you were attempting to download software or manage the switch via the RS-232 Terminal Port, check that connections between the Terminal Port and local terminal or PC are secure.
AT-8800 Series Switch GBIC 1000BASE-T Auto-Negotiation 1000BASE-T GBICs support only 1000 Mbps full duplex connections. Although 1000BASE-T GBICs will participate in auto-negotiation processes, they will only advertise 1000 Mbps. Half duplex, 10BASE-T, and 100BASE-TX modes are not supported. While 1000BASE-T GBICs will auto-negotiate at the copper Ethernet level, the ports will behave as if in fixed 1000 Mbps full duplex mode.
