Specifications

2-111
Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 2 Cisco IGX 8400 Series Cards
Universal Router Module
Cisco IOS Image Recovery
If the main Cisco IOS system image stored in Flash is lost or damaged, you can use the Cisco IOS boot
helper image to copy backup images or configuration files from an external TFTP server or another
online source.
Step 1 At the switch software CLI, configure the embedded router to load the boot helper image instead of the
system image at router startup with the switch software cnfrtrparm slot 1 2 command.
Step 2 Reboot the embedded router with the switch software resetcd or rstrtr commands. The embedded router
reboots using the Cisco IOS boot helper image.
Step 3 At the Cisco IOS CLI, repeat Steps 1 through 12 of the procedure described in the “URM Configuration”
section on page 2-93.
Step 4 Copy the saved Cisco IOS configuration file from the external TFTP server to the embedded router
NVRAM with the Cisco IOS copy command.
Step 5 At the switch software CLI, configure the embedded router to load the system image at router startup
with the switch software cnfrtrparm slot 1 1 command.
Step 6 Reboot the embedded router with the switch software resetcd or rstrtr commands. The embedded router
reboots using the new Cisco IOS system image.
Replacing the URM
When replacing the URM, you should complete these tasks in the following order to avoid damage to
the card:
1. Remove the front card.
2. Remove the back card.
3. Replace the back card.
4. Replace the front card.
5. Configure the card as appropriate.
Note The Cisco IOS software holds the embedded router in reset when the URI back card is removed; the
embedded router does not resume until the URI back card is reseated.
Removing the Front and Back Cards
You need the following tools and parts to remove the front and back cards:
• ESD-preventive wrist strap
• 5/32-inch Allen wrench
• Number 1 Phillips screwdriver
• Flathead screwdriver
• Pencil or pen