Core Issue
This issue may result in the new value not holding after the reload.
Resolution
To ensure that the configuration register value is set back to the default (after changing the console speed for an xmodem transfer), perform these steps:
- After the router reloads following a successful xmodem transfer, issue these commands:
router>enable
router#configure terminal
router(config)#line con 0
router(config-line)#speed 9600
- As soon as you issue the speed 9600 command, you lose connectivity to the console. In the terminal emulator program (such as Hyperterminal), change the speed to 9600 and reconnect.
- Issue these commands:
router(config-line)#exit
router(config)#config-register 0x2102
router(config)#^Z
! --- Enter Ctrl-z to exit.
router#show version
- After issuing the show version command, look at the last line of the output. It should appear as shown:
Configuration register is 0x3920 (will be 0x2102 at next reload)
At this point, the router's configuration register setting should stay at 0x2102 if reloaded.
Note: If the above steps are not done in this order, or if the speed 9600 command is not issued, the configuration register may revert back to the 0x3920 setting after reloading.
Problem Type
Console, aux port and Telnet connectivity
When Problem Occurs
After software configuration change
After software upgrade
