Maintaining the Cisco AS5200 Universal Access Server

The installation of the 12-port modem card is shown in Figure A-2. The carrier card is shown removed from the Cisco AS5200 to show the installation of the 12-port modem card in the carrier card.

Figure A-2 : 12-Port Modem Card Installation

Perform the following steps to install a 12-port modem card:

Step 1 Turn off the Cisco AS5200.

Step 2 Remove all interface cables from the back panel of the Cisco AS5200.

Step 3 Place the Cisco AS5200 so that the back panel is closest to you.

Step 4 Put on an ESD-sensitive wrist strap.

Step 5 Remove the blank cover on the carrier card.

Step 6 Remove the 12-port modem card from the ESD protective shipping material.

Step 7 Slide the modem card into the carrier card slot until it is completely seated in the carrier card.

Step 8 Tighten the two captive screws on the modem card to secure it to the carrier card.

Opening the Chassis

This section describes the procedure for opening the chassis by removing the chassis cover.

Required Tools

You need the following tool to open the chassis:

Medium-size flat-blade screwdriver (1/4 inch [0.625 cm])

Removing the Chassis Cover

You must open the Cisco AS5200 chassis to gain access to its interior components: the system card, system-code single in-line memory modules (SIMMs), dynamic random access memory (DRAM) SIMMs, and boot ROM. When you replace the Boot ROMs, you must also remove of all feature cards in the chassis.

Perform the following steps to remove the chassis cover:

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. (To see translated versions of this warning, refer to the appendix "Translated Safety Warnings.")

Step 1 Turn off the power; however, to channel electrostatic discharge (ESD) voltages to ground, do not unplug the power cable.

Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. (To see translated versions of this warning, refer to the appendix "Translated Safety Warnings.")

Step 2 Remove all interface cables from the rear panel of the Cisco AS5200.

Step 3 Place the Cisco AS5200 so that the front panel is closest to you. Note that the chassis is comprised of two sections: top and bottom. The chassis top is secured to the bottom by three screws and metal tabs on the top cover and chassis.

Step 4 Remove the three screws located on the top cover of the chassis, as shown in Figure A-3.

Figure A-3 : Removing the Chassis Cover

Step 5 Place each hand on the front corner of the top cover.

Step 6 Lift the front edge of the top cover one inch (2.54 cm) over the bottom chassis, as shown in Figure A-4.

Figure A-4 : Lifting the Top Cover

Step 7 Pull the top cover toward you until the metal tabs on the top cover separate from the chassis bottom, as shown in Figure A-5.

Figure A-5 : Separating the Top Cover from the Chassis Bottom

Step 8 Lift the top cover until it separates from the chassis bottom and set it aside.

Removing Feature Cards

Feature cards must be removed from the Cisco AS5200 to access the system card or to upgrade the feature cards.

Required Tools

You need the following tools to remove the feature cards:

• Medium-size flat-blade screwdriver (1/4 inch [0.625 cm])
  

• ESD-sensitive mat
  

Perform the following steps to remove the feature cards:

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. (To see translated versions of this warning, refer to the appendix "Translated Safety Warnings.")

Step 1 Turn off the Cisco AS5200.

Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. (To see translated versions of this warning, refer to the appendix "Translated Safety Warnings.")

Step 2 Remove all interface cables from the rear panel of the Cisco AS5200.

Step 3 Place the Cisco AS5200 so that the rear panel is closest to you. Note that the feature cards are secured to the chassis by a captive mounting screw at each end of the feature card, as shown in Figure A-6.

Figure A-6 : Feature Card Removal

Step 4 Put on an ESD-sensitive wrist strap.

Step 5 Loosen the two captive screws that secure the feature card to the chassis until each screw is free of the chassis.

Step 6 Hold a captive screw in each hand, and pull until the card slides free of the chassis.

Step 7 Pull the feature card toward you until it is separated from the card slot. Set the card aside on an ESD-sensitive mat.

Repeat the procedure to remove additional feature cards.

Replacing Boot ROMs

To upgrade the boot read-only memory (ROM) software to a new software image, the existing boot ROMs must be replaced.

Required Tools and Equipment

The following tools and equipment are required to replace the boot PROMs:

• Read-only memory (ROM) extraction tool or a small flat-blade screwdriver
  

• Two boot ROMs
  

• ESO-preventive wrist strap
  

Perform the following steps to replace the boot ROMs:

Step 1 Turn off the Cisco AS5200.

Step 2 Attach an ESD-preventive wrist strap.

Step 3 Open the cover. (See the instructions in the section "Opening the Chassis" in this appendix.)

Step 4 Remove all feature cards to access the system card. (See the instructions in the section "Removing Feature Cards" in this appendix.)

ROMs (FW1 and FW2) on the system card are exposed, as shown in Figure A-7.

Figure A-7 : System Card Layout

Caution The correct placement of the boot ROMs is crucial. If improperly positioned, the new components could be damaged when the system is turned on. Read all of the instructions before proceeding. To prevent damage to the ROMs from ESD while you handle the system and its components, follow the ESD procedures described in the chapter "Preparing for the Cisco AS5200 Universal Access Server." Also, be careful not to damage or scratch the printed circuit card under the ROMs.

Step 5 Locate the boot ROMs, FW1 and FW2, on the system board.

Step 6 Gently extract the old ROM with an ROM extraction tool or a small flat-blade screwdriver, and set the old boot ROM on a nonconductive surface.

Caution The notch in the ROM must match the notch in the socket on the card. Installing the components backward damages them.

Step 7 Insert the new boot ROMs in their respective sockets as shown in Figure A-7. Be careful not to bend or crush any of the bottom pins. To straighten out a bent pin, use needlenose pliers. Align the notch in the new ROM with the notch in the ROM socket, ignoring the orientation of the label.

Upgrading the DRAM SIMM

This section describes how to upgrade the DRAM SIMM on the system card. You might need to upgrade the DRAM SIMM for the following reasons:

• You have upgraded to a new Cisco IOS feature set or release.
  

• You are using very large routing tables or many protocols (for example, when the Cisco AS5200 is set up as a connection device between large external networks and your internal network).
  

There are two areas of removable DRAM SIMM in the Cisco AS5200 (see Figure A-7). This first area is the main memory DRAM SIMM (labeled MM). Main memory is used by the CPU to store the operating configuration, routing tables, caches, and queues.

The second area is the packet memory DRAM SIMM (labeled PKT). Packet memory is used to store incoming and outgoing packets.

Required Tools and Equipment

You need the following tools to remove and replace the DRAM SIMM on the Cisco AS5200:

• ESD-preventive wrist strap
  

• The appropriate DRAM SIMM for your Cisco AS5200
  

Main Memory DRAM SIMM Installation

Perform the following steps to install the main memory DRAM SIMMs:

Step 1 Turn off the Cisco AS5200.

Step 2 Put on an ESD-preventive wrist strap.

Step 3 Open the chassis cover. (See the instructions in the section "Opening the Chassis" in this appendix.)

Step 4 Place the chassis with the main-memory DRAM SIMM socket (labeled MM) toward you, as shown in Figure A-7.

Step 5 Remove the existing DRAM SIMM by pulling outward on the connector holders to unlatch them, as shown in Figure A-8. The connector holds the SIMM tightly, so be careful not to break the holders on the SIMM connector.

Caution To prevent damage, do not press on the center of the SIMM. Handle the SIMM carefully.

Figure A-8 : Removing and Replacing the CPU DRAM SIMM

Step 6 Position the new SIMM so that the polarization notch is located at the right end of the SIMM socket.

Step 7 Insert the new DRAM SIMM by sliding the end with the metal fingers into the SIMM connector socket at approximately a 45-degree angle to the system card. Gently rotate the SIMM toward you until the latch on either side snaps into place. Do not use excessive force, because the connector might break.

Step 8 Replace the Cisco AS5200 chassis cover. (See the instructions in the section "Closing the Chassis" in this appendix.)

Step 9 Connect the Cisco AS5200 to a console terminal.

Step 10 Turn on the Cisco AS5200. If error messages relating to memory are displayed, remove the DRAM SIMM and reinstall it, taking care to seat the SIMM firmly in its socket.

Replacing System-Code SIMMs

The system code (software) is stored in Flash memory SIMMs. The 80-pin Flash memory SIMMs must be purchased from Cisco Systems, Inc. Contact a customer service representative for more information.

The system code for the Cisco AS5200 is contained on two 80-pin Flash memory SIMMs. Flash memory must be installed in both system-code SIMMs (labeled FSIM0 and FSIM1).

Required Tools and Equipment

You need the following tools to remove and replace the system-code SIMMs on the Cisco AS5200:

• ESD-preventive wrist strap
  

• The appropriate system-code SIMM(s) for your Cisco AS5200
  

System-Code SIMM Replacement

Perform the following steps to upgrade the system-code Flash memory SIMMs:

Step 1 Turn off the Cisco AS5200.

Step 2 Put on an ESD-preventive wrist strap.

Step 3 Open the chassis cover. (See the previous procedure in the section "Opening the Chassis" in this appendix.)

Step 4 Place the chassis so that the system card is shown in Figure A-7, with the system-code SIMMs toward you.The SIMM sockets are labeled FSIM0 and FSIM1. (See Figure A-7.)

Step 5 Remove the existing system-code SIMM by pulling outward on the connector holders to unlatch them. The connector holds the SIMM tightly, so be careful not to break the holders on the SIMM connector. (See Figure A-9.)

Caution To prevent damage, do not press on the center of the SIMMs. Handle each SIMM carefully.

Step 6 Repeat these steps for all the system-code SIMMs that you need to replace.

Figure A-9 : Removing and Replacing the System-Code SIMM

Step 7 Place the system card as shown in Figure A-9. Position the new SIMM so that the polarization notch is located at the right end of the SIMM socket.

Caution Some Flash memory SIMMs have the components mounted on the rear side. To prevent damage when you insert the SIMM, always use the polarization notch as a reference, not the position of the components on the SIMM.

Step 8 Insert the new SIMM by sliding the end with the metal fingers into the appropriate SIMM connector socket (labeled FSIM0 or FSIM1 in Figure A-7) at approximately a 45-degree angle to the system card. Gently rotate the SIMM toward you until the latch on either side snaps into place. Do not use excessive force, because the connector might break.

Step 9 Replace the Cisco AS5200 chassis cover. (See the instructions in the following section, "Closing the Chassis.")

Step 10 Connect the Cisco AS5200 to a console terminal.

Step 11 Turn on the Cisco AS5200. If any error messages relating to memory are displayed, remove the system-code SIMM and reinstall it, taking care to seat the SIMM firmly in the socket.

Closing the Chassis

This section describes the procedure for closing the chassis.

Required Tools

You need the following tools for replacing the chassis cover:

Medium-size flat-blade screwdriver (1/4 inch [0.625 cm])

Replacing the Cover

After you finish the maintenance for your system, perform the following steps to replace the cover:

Step 1 Place the chassis bottom so that the front panel is closest to you.

Step 2 Hold the top cover over the chassis bottom, and align the chassis and top cover tabs at the top rear of the chassis, as shown in Figure A-10.

Step 3 Push the top cover toward the chassis back panel, and ensure the following:

• The top cover tabs fit under the chassis back panel so that they are not exposed.
  

• The chassis tabs on the top of the chassis back panel fit under the top cover so that they are not exposed.
  

Figure A-10 : Replacing the Chassis Cover

Step 4 Lower the front of the top cover to close the chassis, and ensure the following:

• The top cover side tabs fit under the chassis side panels so that they are not exposed.
  

• The chassis tabs fit under the top cover side panels so that they are not exposed.
  

Step 5 Secure the chassis cover with three screws.

Step 6 Reinstall the chassis on a rack, desktop, or table.

Step 7 Reinstall all interface cables.

Recovering Lost Passwords

This section explains how to recover a lost password. There are three types of passwords:

• An enable secret password--- a very secure, encrypted password. The enable secret password is used on access servers running Cisco IOS Release 10.3(2) or later.
  

• An enable password--- a less secure, nonencrypted password. The enable password is used if you are using Cisco IOS Release 10.3(1) or earlier.
  

• A virtual terminal password. The virtual terminal password is used to prevent unauthorized users from attempting to change the Cisco AS5200 configuration. When a virtual terminal password is set, you must provide a password to log in to the console and access user EXEC mode.
  

To recover a lost enable password you must set the configuration register to (0x142) so that the contents of nonvolatile random--access memory (NVRAM) are ignored. This allows you to see your password. The enable secret password is encrypted and cannot be recovered; it must be replaced. The enable and virtual terminal passwords can be encrypted or clear text.

Perform the following steps to recover a lost password:

Step 1 Connect a terminal to the console port on the rear panel of the Cisco AS5200.

Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 2 stop bits.

Step 3 Enter the show version command to display the existing configuration register value and note its value. The configuration register value is on the last line of the display. Note whether the configuration register is set to enable or disable Break.

The factory-default configuration register value is 0x2102---disable Break. Note that the third digit from the left in 0x2102 is 1, which disables Break. If the third digit is not 1, Break is enabled.

Step 4 If the configuration register is set to disable Break, power cycle the access server. (Turn off the Cisco AS5200, wait five seconds, and then turn the Cisco AS5200 on again.)

Step 5 If the configuration register is set to enable Break, press the Break key or send a Break signal to the Cisco AS5200. Then proceed to Step 7.

rommon 1> b [tftp] flash filename

access server > enable
password: <enablepassword>
access server # conf term
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z 
config-register 0x102
boot system flash [filename]
^Z
access server # 

access server > enable
Password: <enablepassword>
access server # config term
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-reg 0x2102
^Z
access server #