Cisco 2500 Series Router IOS Upgrade Steps

http://www.netspec.com/helpdesk/rtupgrad.html

A quick quide to upgrading a Cisco 2500 series router's IOS.

enable

config t

config-reg 0x2101

CTRL Z

wr mem

reload

enable {should return with: (boot)router#}

copy tftp flash

{Enter the necessary IP number of the tftp server}

{Enter the name of the upgrade file}

y

y

y

config t

config-reg 0x2102

CTRL Z

wr mem

reload

sho ver