From: Jay Hennigan (jay@west.net)
Date: Sun Sep 22 2002 - 03:52:45 GMT-3
On Sat, 21 Sep 2002, CCIE Prep wrote:
> Does anyone know if there is a way to upgrade Cisco 2500 series routers via
> a serial interface? I have a couple 2502's (no ethernet) that I want to
> upgrade via a TFTP server. I have connected them via a serial frame-relay
> connection to a 2501. The 2501 is connected to the subnet with the TFTP
> server. I can see the TFTP server from the 2502 initially. However, after
> issuing the "COPY TFTP FLASH" command, the 2502 reboots and looses
> connectivity back to the TFTP server, making it impossible to load the new
> flash. Has anyone done this successfully?
The 2500 series run from flash. It will reboot into rx_boot mode with a
stripped-down IOS so that it can still run while overwriting the image in
flash. Have you waited a few minutes after it reboots to see if it regains
connectivity and starts the TFTP download? Earlier versions require you to
set the coofiguration register to 0x2101, reload, and then initiate the
TFTP download.
It is not recommended to do this remotely.
Worst case you can recover via console and xmodem.
Gory details:
http://www.cisco.com/warp/public/130/sw_upgrade_proc_flash.shtml
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net NetLojix Communications, Inc. - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323
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