AT-8600 Series Switch Hardware Reference AT-8624T/2M AT-8624PoE AT-8648T/2SP
AT-8600 Series Hardware Reference Document Number C613-03080-00 REV E. © 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 3 Contents Models Covered By This Reference .................................................................... 4 Why You Should Read This Reference ............................................................... 4 Hardware Description ....................................................................................... 5 Switch Overview ......................................................................................... 5 AT-8600 Series Switch Models ...........................
AT-8600 Series Models Covered By This Reference This Hardware Reference includes information on the following models: ■ AT-8624T/2M 24-port 10BASE-T/100BASE-TX Layer 3 Fast Ethernet Switch ■ AT-8624PoE Layer 3 Fast Ethernet Switch ■ AT-8648T/2SP 48-port 10BASE-T/100BASE-TX Layer 3 Fast Ethernet Switch The latest Hardware Reference can be found at www.alliedtelesis.com/support/software.
Hardware Reference 5 Hardware Description This section provides an overview of the hardware features for AT-8600 Series switches. Hardware descriptions for expansion modules can be found in the Expansion Modules Installation Guide. These references can be found on the CD-ROM bundled with your switch, or can be downloaded from www.alliedtelesis.com/support/software. Switch Overview RJ-45 copper ports ensure industry-standard compatibility, while two expansion module bays add configuration flexibility.
AT-8600 Series Processing core Asynchronous serial port Expansion module bays ■ 200 MHz CPU ■ 16 MBytes RAM ■ 8 MBytes flash memory ■ Up to 115 kbps ■ Standard DB9 female RS-232 connector Expansion module bays are included on the AT-8624T/2M and AT-8624PoE switches.
Hardware Reference 7 AT-8600 Series Switch Models This section provides hardware descriptions for individual switch models.
AT-8600 Series Implementing PoE The IEEE 802.3af standard, which is the IEEE standard for PoE, describes two methods for implementing PoE over twisted pair cabling. One method uses the same strands that carry the network traffic and the other the spare strands. The PoE implementation on the AT-8624PoE switch transmits power over the same strands that carry the network traffic (strands 1, 2, 3 and 6). The power transfer does not interfere with the network traffic.
Hardware Reference 9 3. To load a file from AT-TFTP Server to the Switch. On a terminal connected to the switch, type the command: LOAD METHOD=TFTP FILE=filename SERVER=ipadd DEST=FLASH where filename is the name of the file to download and ipadd is the IP address of the PC running AT-TFTP Server. 4. To save a TFTP Server log. Select "Save As" from the File menu. TFTP requests are logged to the AT-TFTP Server main window.
AT-8600 Series Switch Start-up This section outlines the log in and start-up procedures for your switch. Although the switch will perform basic switching operations without being configured, you will need to go through these log in and start-up procedures if you wish to configure the switch and access its full switching capabilities. To log in Using the supplied RS-232 DB9 straight-through cable, connect your terminal or PC to the RS-232 Terminal Port.
Hardware Reference 11 To access help files Before help is used for the first time, the help files must be defined. To define the files, enter: set help=help-filename where help-filename is the name of a help file stored in flash. To see a list of files stored in flash, enter: show file Help files have an HLP extension.
AT-8600 Series Pressing selected keys on the terminal immediately after the “Force EPROM download” message is displayed will change the switch start-up process (Table 1). Table 1: Switch start-up sequence keystrokes Pressing key... Forces the switch to... [Y] Load the EPROM release, with no patch. [S] Start with the default configuration. Any boot script is ignored. [Ctrl/D] Enter diagnostics mode. During the start-up process the switch will generate four different types of messages.
Hardware Reference 13 ERROR: Code load retried. FAIL: Code load failed. The load of the code from ROM to RAM failed. The load is retried a number of times. Each time a failure occurs, the ERROR message is displayed. If the maximum number of attempts is reached, the FAIL message is displayed. INFO: Initial download successful. The start-up tests and download are complete, and the switch software is about to be started. If the default install is a compressed release, the release will now be decompressed.
AT-8600 Series Switch Interfaces This section provides pin assignments for the switch’s RS-232 Terminal Port and RJ-45 ports, and the Redundant Power Supply (RPS) connector. RS-232 Terminal Port The RS-232 Terminal Port is used to connect the switch to a management device. For management purposes the switch’s software can be accessed from a terminal, a PC running terminal emulation software, or from a remote location via a modem connection.
Hardware Reference 15 For 10BASE-T/100BASE-TX connections, a twisted pair cable must be used. 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 6 illustrates the pin layout for RJ-45 connectors. Figure 6: RJ-45 pin layout 8 1 8 1 RJPIN With 10BASE-T/100BASE-TX cables, pins 1 and 2 are used for transmitting data, while pins 3 and 6 are used for receiving data.
AT-8600 Series If a twisted pair cable is to join two ports and only one of the ports has an internal crossover, the two pairs must be straight through, as listed in Table 5 on page 16.
Hardware Reference 17 Redundant Power Supply AT-8600 Series switches have a Redundant Power Supply (RPS) connector on their rear panel. The RPS connector differs for different switch models. For information about the RPS for AT-8624T/2M and AT-8648T/2SP switches, Figure 7 illustrates the pin layout to the 16-pin molex connector and RPS port. Table 8 lists the connector’s pin numbers and pin functions.
AT-8624Poe pin layout AT-8600 Series For the AT-8624 PoE switch, the pin layout is different. The molex connector has 15 power pins, plus 2 high current pins. The pin layout is as follows. For the female unit connector: ■ The top row contains 7 pins. Pins are numbered 1-7, from right to left. ■ The bottom row contains 8 pins. Pins are numbered 8-15, from right to left. ■ On the left of the connector is the A2 pin. ■ On the right of the connector is the A1 pin.
Hardware Reference 19 Switch Cables and Loopback Plugs This section describes how to make cables for connecting the switch’s interfaces to networks, terminals, and printers. How to make loopback plugs for testing switch interfaces is also described. Terminal and Modem Cables Figure 8 on page 19 shows how to wire cables to connect a standard VT100 compatible terminal, or a modem, to the switch’s RS-232 Terminal Port.
AT-8600 Series Figure 9: Pin wiring diagram for a DCE RS-232 Terminal Port (DB9 female connector) male to male modem cable DB9 Male (to switch/DCE) Not connected → (TXD) ← (RXD) ← (CD) (GND) → (DTR) ← (CTS) → (RTS) (RING) Pin 1 DB9 Male (to modem/DCE) 1 2 3 4 5 6 7 8 9 3 (TXD) 2 (RXD) 1 (DCD) 5 (GND) 4 (DTR) 8 (CTS) 7 (RTS) 9 6 Not connected Pin 5 Pin 5 Pin 1 Cable Pin 6 Pin 9 Pin 9 DB9 Male Pin View Notes: (1) (2) Pin 6 DB9 Male Pin View → Output from switch; ← Input to switch Cable ve
Hardware Reference 21 Loopback Plugs for Testing Switch Interfaces Loopback plugs are used in conjunction with the Test Facility software to test the physical interfaces on the switch (see the “Test Facility” section beginning on page 22 of this Reference, and the Test Facility chapter of the AT-8600 Series Software Reference).
AT-8600 Series Port, Connector, and Cable Combinations This section provides cabling guidelines for each switch model. Table 11: Cable guidelines.
Hardware Reference 23 which produces a display like that shown in Figure 11 on page 23. Figure 11: Example output from the SHOW TEST command.
AT-8600 Series Troubleshooting This section provides information on how to detect and resolve problems with AT-8600 Series switches and their expansion options. Other sources of useful troubleshooting information are: ■ www.alliedtelesis.com/support/software. ■ The AT-8600 Series Software Reference. Performing the following tasks will eliminate the most common faults. 1. Make sure the power cord is securely connected. 2. Check that the power supply voltage is stable. 3.
Hardware Reference 25 LEDs and What They Mean The following tables outline how the switch and expansion modules report faults and operational activities. Expansion modules are optional and can be purchased separately. Contact an Authorised Allied Telesis distributor or reseller, or visit www.alliedtelesis.com for more information on purchasing expansion modules. LEDs on AT-8600 Series Switches System LEDs LED State Description FAULT Off Switch operation is normal.
AT-8600 Series Link and Mode LEDs for the AT-8624T/2M switch LED State Description LINK OFF There is no link between the port and the endnode. Green A valid link has been established between the port and the end-node. OFF No data collisions are occurring on the port. Flashing Green Data collisions are occurring on the port. OFF The port is operating at 10 Mbps. Green The port is operating at 100 Mbps. OFF The port is operating in half-duplex mode.
Hardware Reference 27 Link and Mode LEDs for the AT-8648T/2SP switch LED State Description LINK OFF There is no link between the port and the endnode. Green A valid link has been established between the port and the end-node. OFF No data collisions are occurring on the port. Flashing Green Data collisions are occurring on the port. OFF The port is operating at 10 Mbps. Green The port is operating at 100 Mbps. OFF The port is operating in half-duplex mode.
AT-8600 Series Some common problems and how to solve them Power LED is off This can indicate: ■ A loose power cord. ■ A power supply failure. Perform the following steps in sequence: Link/Activity LED on any port is off 1. Check that the power cord connections are secure. 2. Check that all switches and circuit protection devices are in the ON position. 3. Ensure that the supply voltage is within the operational range (110/240 VAC 50/60 Hz). This can indicate: ■ A loose data cable.
Hardware Reference 29 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. If you cannot access the switch’s software because of a faulty RS-232 Terminal Port connection, you can still manage the switch via Telnet or SNMP until the problem is fixed. 4. Unplug the switch and then plug it in again.
AT-8600 Series 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 C613-03080-00 REV E 31 3. In the “Connect using” field on the Connect To dialog box, select the COM port on the PC used to connect to the switch. and click the OK button. 4. In the COMn Properties dialog box, set port parameters as follows, and click the OK button.
AT-8600 Series 5. From the main HyperTerminal window, select Properties from the File menu. Click the Settings tab, and set the Properties dialog box as follows. 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.
Hardware Reference 33 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. To use the configuration, double-click the connection icon. When the HyperTerminal window appears, press the Enter key several times; the switch’s login prompt is then displayed.
