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Maintaining the Cisco 7206

Maintaining the Cisco 7206

Maintaining the Cisco 7206

This chapter describes basic maintenance procedures for the Cisco 7206. The procedures are presented in the following sections:

For procedures that explain how to replace the main, Flash, and ROM monitor memory, refer to the configuration note Cisco 7206 Memory Replacement Instructions (Document Number 78-3226-xx).


Viewing Your System Configuration

You can use the show version and the show diag commands to view information specific to the hardware configuration of your Cisco 7206.

Use the show version (or show hardware) command to display the system hardware (the network processing engine and number of interfaces installed), the software version, the names and sources of configuration files, and the boot images. The following example shows the output from the show version command: 

router> sh version
Cisco Internetwork Operating System Software 
IOS (tm) 7200 Software (C7200-J-M), Released Version 11.1(6) [kpfrgiu 100]
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Sun 21-Apr-96 04:10 by 
Image text-base: 0x60010890, data-base: 0x605F0000

ROM: System Bootstrap, Version 11.1(6) RELEASED SOFTWARE
ROM: 7200 Software (C7200-J-M), Released version 11.1(6) [gstovall 100]

router uptime is 8 minutes
System restarted by reload
System image file is "c7200-j-mz", booted via tftp from 1.1.10

cisco 7206 (NPE150) processor with 12288K/4096K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0 (Level 2 Cache)
Last reset from power-on
Bridging software.
SuperLAT software copyright 1990 by Meridian Technology Corp).
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software (copyright 1994 by TGV Inc).
4 Ethernet/IEEE 802.3 interfaces.
2 FastEthernet/IEEE 802.3 interfaces.
4 Token Ring/IEEE 802.5 interfaces.
12 Serial network interfaces
1 Compression port adapter
125K bytes of non-volatile configuration memory.
1024K bytes of packet SRAM memory.

20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x0

Use the show diag command to determine what type of port adapters and I/O controller (with or without the Fast Ethernet port) are installed in slot 0 through slot 4 of your Cisco 7206. You can also use the show diag slot command to display information about a specific port adapter slot.

The following example shows the output from the show diag command. The I/O controller listed in slot 0 has a Fast Ethernet port. 

router> sh diag
Slot 0:
        Fast-ethernet on C7200 I/O card port adapter, 1 port
        Port adapter is analyzed
        Port adapter insertion time 1d18h ago
        Hardware revision 2.0           Board revision A0
        Serial number     3511336       Part number    73-1537-03
        Test history      0x0           RMA number     00-00-00
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 14 02 00 00 35 94 28 49 06 01 03 00 00 00 00
          0x30: 50 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF

Slot 1:
        Token-ring port adapter, 4 ports
        Port adapter is analyzed
        Port adapter insertion time 1d18h ago
        Hardware revision 1.1           Board revision B0
        Serial number     2825629       Part number    73-1390-04
        Test history      0x0           RMA number     00-00-00
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 05 01 01 00 2B 1D 9D 49 05 6E 04 00 00 00 00
          0x30: 58 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF


Slot 2:
        Fast-ethernet (TX-ISL) port adapter, 1 port
        Port adapter is analyzed
        Port adapter insertion time 1d18h ago
        Hardware revision 1.0           Board revision A0
        Serial number     3536481       Part number    73-1688-03
        Test history      0x0           RMA number     00-00-00
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 11 01 00 00 35 F6 61 49 06 98 03 00 00 00 00
          0x30: 50 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF
Slot 3:
        Serial port adapter, 4 ports
        Port adapter is analyzed
        Port adapter insertion time 1d18h ago
        Hardware revision 1.0           Board revision UNKNOWN
        Serial number     2824732       Part number    73-1389-04
        Test history      0xFF          RMA number     255-255-255
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 04 01 00 00 2B 1A 1C 49 05 6D 04 FF FF FF FF
          0x30: 02 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Slot 4:
        Ethernet port adapter, 4 ports
        Port adapter is analyzed
        Port adapter insertion time 1d18h ago
        Hardware revision 1.1           Board revision A0
        Serial number     4294967295    Part number    73-1556-04
        Test history      0x0           RMA number     00-00-00
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 02 01 01 FF FF FF FF 49 06 14 04 00 00 00 00
          0x30: 50 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF


Slot 5:
        Compression engine 768K port adapter, 0 ports
        Port adapter is analyzed
        Port adapter insertion time 00:11:11 ago
        Hardware revision 255.255               Board revision UNKNOWN
        Serial number     4294967295    Part number    255-65535-255
        Test history      0xFF          RMA number     255-255-255
        EEPROM format version 255
        EEPROM contents (hex):
          0x20: FF 09 FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Slot 6:
        Mueslix serial (V.35) port adapter, 8 ports
        Port adapter is analyzed
        Port adapter insertion time 00:11:26 ago
        Hardware revision 255.255               Board revision UNKNOWN
        Serial number     4294967295    Part number    255-65535-255
        Test history      0xFF          RMA number     255-255-255
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 0D FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

For specific information on the show version, show diag, and other software commands, refer to the publications listed in the section "If You Need More Information" in the chapter "Performing a Basic Configuration of the Cisco 7206."


Replacing a Port Adapter

At some point, you might want to replace a port adapter in your Cisco 7206. The following procedures explain how to remove and install a port adapter.

Complete the following steps to remove a port adapter from the Cisco 7206 router:

Step 1 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.

Step 2 Place the port adapter lever for the desired port adapter slot in the unlocked position. The port adapter lever remains in the unlocked position. (Refer to Figure 6-1.)

Figure 6-1 : Placing the Port Adapter Lever in the Unlocked Position

h6596.gif

Step 3 Grasp the handle on the port adapter and carefully pull the port adapter from the midplane, about half way out of its slot. If you are removing a blank port adapter, pull the blank port adapter all the way out of the chassis slot.

Note As you pull the port adapter from the midplane, OIR administratively shuts down all active interfaces on the port adapter. For a complete description of OIR, refer to the section "Online Insertion and Removal" in the chapter "Product Overview."

Step 4 With the port adapter half way out of the slot, disconnect all cables from the port adapter.

Step 5 After disconnecting the cables, pull the port adapter from its chassis slot.

fig_2.gif Caution Always handle the port adapter by the carrier edges and handle; never touch the port adapter's components or connector pins. (Refer to Figure 6-2.)

Figure 6-2 : Port Adpater Handling---Side View

h6420.gif

Step 6 Place the port adapter on an antistatic surface with its components facing upward, or in a static shielding bag. If the port adapter will be returned to the factory, immediately place it in a static shielding bag.

This completes the procedure for removing a port adapter from the Cisco 7206 router.

Complete the following steps to install a port adapter in the Cisco 7206 router:

Step 1 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.

Step 2 Use both hands to grasp the port adapter by its metal carrier edges and position the port adapter so that its components are downward. (Refer to Figure 6-2.)

Step 3 Align the left and right edge of the port adapter metal carrier between the guides in the port adapter slot. (Refer to Figure 6-3.)

Figure 6-3 : Aligning the Port Adapter Metal Carrier Between the Slot Guides

h6597.gif

Step 4 With the metal carrier aligned in the slot guides, gently slide the port adapter half way into the port adapter slot.

fig_3.gif Caution Do not slide the port adapter all the way into the slot until you have connected all required cables. Trying to do so will disrupt normal operation of the router.

Step 5 With the port adapter half way in the slot, connect all required cables to the port adapter.

Note For connection equipment, signaling, and pinout information for a specific port adapter type, refer to the configuration note for the port adapter. For example, connection equipment, signaling, and pinout information for the Fast Ethernet port adapter is contained in the configuration note PA-FE-TX and PA-FE-FX Fast Ethernet 100BASE-T Port Adapter Installation and Configuration (Document Number 78-2659-xx). This configuration note accompanies the Fast Ethernet port adapter when it is shipped from the factory as an installed item in a Cisco 7206 router and when it is shipped as a FRU.

Step 6 After connecting all required port adapter cables, carefully slide the port adapter all the way into the slot until you feel the port adapter's connectors mate with the midplane.

Step 7 Move the port adapter lever to the locked position. (Refer to Figure 6-4.)

Note If the port adapter lever does not move to the locked position, the port adapter is not completely seated in the midplane. Carefully pull the port adapter half way out of the slot, reinsert it, and move the port adapter lever to the locked position.

Figure 6-4 : Placing the Port Adapter Lever In the Locked Position

h6747.gif

This completes the procedure for installing a port adapter in the Cisco 7206 router.


Installing and Removing a Flash Memory Card

The I/O controller has two PCMCIA slots for Flash memory cards: slot 0 (lower) and slot 1 (upper). Complete the following steps to insert a Flash memory card in either PCMCIA slot:

Step 1 Orient the Flash memory card so that its connector end faces the appropriate slot. (Refer to Figure 6-5a).

Step 2 Carefully guide the card into the slot until it mates with the slot's connector and the eject button for the slot pops out toward you. (Refer to Figure 6-5b.)

Note Flash memory cards do not insert all the way into the PCMCIA slots; the end of the card protrudes from the I/O controller faceplate. Do not attempt to force the card past this point.

Complete the following steps to remove a Flash memory card from either PCMCIA slot:

Step 1 Press the ejector button on the slot. (Refer to Figure 6-5c.)

Step 2 Grasp the card and pull it from the slot.

Step 3 Place the card in an antistatic bag.

This completes the steps for inserting and removing a Flash memory card.

Figure 6-5 : Inserting and Removing a Flash Memory Card

h6437.gif


Formatting a New Flash Memory Card

The Flash memory card that shipped with your Cisco 7206 contains the Cisco IOS software image you need to boot your router. In some cases, you might need to insert a new Flash memory card and copy images or backup configuration files onto it. Before you can use a new Flash memory card, you must format it. (Use only Intel Series 2+ Flash memory cards.)

Note The following procedure assumes you have already booted your Cisco 7206.

fig_4.gif Caution The following formatting procedure erases all information on the Flash memory card. To prevent the loss of important data that might be stored on a Flash memory card, proceed carefully. If you want to save the data on a Flash memory card, copy the data to a server before you format the card.

Use the following procedure to format a new Flash memory card:

Step 1 Using the procedure in the section "Installing and Removing a Flash Memory Card," insert the Flash memory card into slot 0. (If slot 0 is not available, use slot 1.)

Step 2 To format the Flash memory card, use the format slot0: (or format slot1:) command as follows.


Router# format slot0:
All sectors will be erased, proceed? [confirm]
Enter volume id (up to 30 characters): MyNewCard
Formatting sector 1
Format device slot0 completed
Router#

The new Flash memory card is now formatted and ready to use.

Note For this example, an 8-MB Flash memory card was used, and at the line "Formatting sector," the system counted the card's sectors backwards from 64 to 1 as it formatted them. For 16-MB Flash memory cards, the system counts backwards from 128 to 1, and for 20-MB Flash memory cards, the system counts backwards from 160 to 1.

Note For configuration information and descriptions of the commands used in this chapter, refer to the Configuration Fundamentals Configuration Guide and the Configuration Fundamentals Command Reference.


Copying a Bootable Image onto a Flash Memory Card

Once you have formatted a new Flash memory card, you can copy a bootable image onto it. To copy an image, use the following procedure, which assumes the following:

  • You have an I/O controller with a good image in the onboard Flash SIMM so you can start the Cisco 7206.

  • The bootable image you want to copy to the Flash memory card exists on a TFTP server to which you have access (meaning you know its name and have connectivity to it), and at least one interface is available over which you can access this server.

Note To ensure access to a TFTP sever, you will need to configure at least one network interface using the setup command facility. For instructions on using this procedure, refer to the chapter "Performing a Basic Configuration of the Cisco 7206."

  • You know the filename of the image you want you want to copy onto the Flash memory card.

Following is the procedure for copying a bootable file (called new.image in the examples) onto the Flash memory card:

Step 1 Boot the Cisco 7206 and allow it to initialize.

Step 2 Insert an unformatted Flash memory card and format it using the procedure in the section "Formatting a New Flash Memory Card" in this chapter. Then proceed to Step 3.

Note If you have already formatted a Flash memory card, you can use it instead; however, you cannot boot from a Flash memory card formatted on another type of system. You must reformat it to use it as a boot source.

Step 3 Copy the new image (new.image in the following example) to the Flash memory card and make this image the default boot image. Then reboot the router using the following series of commands:


Router> en
Password:
Router# copy tftp:new.image slot0:new.image
20575008 bytes available on device slot0, proceed? [confirm]
address or name of remote host [1.1.1.1]?
loading new.image from 1.1.1.1 (via Ethernet1/0):!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 7799951/15599616 bytes]
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Router#

Note In the preceding example, the exclamation points (!!!) appear as the file is downloaded, and the "C" characters signify calculation of the checksum, which is a verification that the file has been correctly downloaded to the Flash memory card.

Router# config terminal
Router(config)# no boot system
Router(config)# boot system flash slot0:new.image
Router(config)# ^z
Router# copy running-config startup-config
Router# reload

When the system reloads, it will boot the new.image file from the Flash memory card.


Copying Bootable Images between Flash Memory Cards

As future releases of Cisco IOS images become available, you will receive these images either as a file booted from a network server, a file on floppy disk, or a file on a Flash memory card.

The following scenario describes how to use a newly released image on a Flash memory card in a system that has an older image on a Flash memory card in slot 0 and a default boot image in the onboard Flash SIMM.

For this scenario, the filenames are as follows:

  • The new image on the new Flash memory card is new.image.

  • The old image on the Flash memory card in slot 0 is old.image.

  • The bootable image in onboard Flash memory is boot.image.

You will copy the new image from the new Flash memory card onto the Flash memory card that contains the old image.

Note The scenario assumes that the new image will fit on the Flash memory card in slot 0, alongside the old image. If there is not enough available space, use the delete command to delete files from the Flash memory card to make sufficient room for the new image; however, do not delete the image.old file. Then use the squeeze command to remove these deleted files from the Flash memory card. If, after you have deleted files and used the squeeze command, the two files cannot coexist on the Flash memory card in slot 0, remove this card (place it in an antistatic bag and store it in a safe place), then insert the new Flash memory card (with the file new.image) in slot 0. Proceed to Step 5 and use the command boot system flash slot0:new.image to designate the file new.image as the default boot image.

Step 1 Boot the Cisco 7206. By default, the file boot.image is used.

Step 2 Enable the router as follows:


Router> en
Password:
Router#

Step 3 Insert the new Flash memory card in slot 1.

Step 4 Use the following command to copy the file new.image in slot 1 to the Flash memory card in slot 0, only if there is enough memory space for the two images to coexist. If there is not enough memory space, proceed to Step 5.


Router# copy slot1:new.image slot0:new.image

Note You can also enter the preceding command as copy slot1:new.image slot0:.

Step 5 Use the following series of commands to designate the file new.image (which is on the Flash memory card in slot 0) as the default boot image:


Router# config t
Router(config)# no boot system
Router(config)# boot system flash slot0:new.image
Router(config)# ^z
Router# copy running-config startup-config
Router# reload

When the system reloads, it will boot the file new.image from the Flash memory card in slot 0.


Replacing or Recovering a Lost Password

This section describes how to recover a lost enable or console login password, and how to replace a lost enable secret password on your Cisco 7206 router.

Note It is possible to recover the enable or console login password. The enable secret password is encrypted, however, and must be replaced with a new enable secret password.


Overview of the Password Recovery Procedure

Following is an overview of the steps in the password recovery procedure:

  • If you can log in to the router, enter the show version command to determine the existing configuration register value.

  • Press the Break key to get to the bootstrap program prompt (ROM monitor). You might need to reload the system image by power cycling the router.

  • Change the configuration register so the following functions are enabled: Break; ignore startup configuration; boot from Flash memory.

Note The key to recovering a lost password is to set the configuration register bit 6 (0x0040) so that the startup configuration (usually in NVRAM) is ignored. This will allow you to login without using a password and to display the startup configuration passwords.

  • Power cycle the router by turning power off and then back on.

  • Log in to the router and enter the privileged EXEC mode.

  • Enter the show startup-config command to display the passwords.

  • Recover or replace the displayed passwords.

  • Change the configuration register back to its original setting.

Note To recover a lost password if Break is disabled on the router, you must have physical access to the router.


Details of the Password Recovery Procedure

Complete the following steps to recover or replace a lost enable, enable secret, or console login password:

Step 1 Attach an ASCII terminal to the console port on your Cisco 7206.

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

Step 3 If you can log in to the router as a nonprivileged user, enter the show version command to display the existing configuration register value. Note the value for use later. If you cannot log in to the router at all, go to the next step.

Step 4 Press the Break key or send a Break from the console terminal. If Break is enabled, the router enters the ROM monitor, indicated by the ROM monitor prompt ( rommon1> ). Proceed to Step 6. If Break is disabled, power cycle the router (turn the router off or unplug the power cord, and then restore power). Then proceed to Step 5.

Step 5 Within 60 seconds of restoring the power to the router, press the Break key or send a Break. This action causes the router to enter the ROM monitor and display the ROM monitor prompt ( rommon1> ).

Step 6 To set the configuration register on a Cisco 7206, use the configuration register utility by entering the confreg command at the ROM monitor prompt as follows:

rommon1> confreg

Answer yes to the enable "ignore system config info"? question and note the current configuration register settings.

Step 7 Initialize the router by entering the reset command as follows:

rommon2> reset

The router will initialize, the configuration register will be set to 0x142, and the router will boot the system image from Flash memory and enter the system configuration dialog (setup) as follows:

--- System Configuration Dialog --

Step 8 Enter no in response to the system configuration dialog prompts until the following message is displayed:

Press RETURN to get started!

Step 9 Press Return. The user EXEC prompt is displayed as follows:

Router>

Step 10 Enter the enable command to enter the privileged EXEC mode. Then enter the show startup-config command to display the passwords in the configuration file as follows:

Router# show startup-config

Step 11 Scan the configuration file display looking for the passwords (the enable passwords are usually near the beginning of the file, and the console login or user EXEC password is near the end). The passwords displayed will look something like this:

enable secret 5 $1$ORPP$s9syZt4uKn3SnpuLDrhuei
enable password 23skiddoo
.
.
line con 0
password onramp

The enable secret password is encrypted and cannot be recovered; it must be replaced. The enable and console passwords may be encrypted or clear text. Proceed to the next step to replace an enable secret, console login, or enable password. If there is no enable secret password, note the enable and console login passwords if they are not encrypted and proceed to Step 16.

fig_5.gif

Caution Do not execute the next step unless you have determined you must change or replace the enable, enable secret, or console login passwords. Failure to follow the steps as shown may cause you to erase your router configuration.

Step 12 Enter the configure memory command to load the startup configuration file into running memory. This action allows you to modify or replace passwords in the configuration.

Router# configure memory

Step 13 Enter the privileged EXEC command configure terminal to enter Configuration mode:

Hostname# configure terminal

Step 14 To change all three passwords, enter the following commands:

enable secret newpassword1
enable password newpassword2
line con 0
password newpassword3

Change only the passwords necessary for your configuration. You can remove individual passwords by using the no form of the above commands. For example, entering the no enable secret command will remove the enable secret password.

Step 15 You must configure all interfaces to be not administratively shutdown as follows:

interface fast ethernet 0/0
no shutdown

Enter the equivalent commands for all interfaces that were originally configured. If you omit this step, all interfaces will be administratively shutdown and unavailable when the router is restarted.

Step 16 Use the config-register command to set the configuration register to the original value noted in Step 3 or Step 7, or to the factory default value 0x2102 as follows:

config-register 0x2102

Step 17 Press Ctrl-Z to exit Configuration mode.

fig_1.gif Caution Do not execute the next step unless you have changed or replaced a password. If you skipped Step 12 through Step 15, skip to Step 19. Failure to observe this caution will cause you to erase your router configuration file.

Step 18 Enter the copy running-config startup-config command to save the new configuration to nonvolatile memory.

Step 19 Enter the reload command to reboot the router.

Step 20 Log in to the router with the new or recovered passwords.

This completes the steps for recovering or replacing a lost enable, enable secret, or console login password.

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