Cisco 6500 - Manual (Page 59)

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Cisco IOS Software Configuration Guide, Release 12.2SX
OL-13013-06
Chapter 4 Configuring Virtual Switching Systems
Upgrading a VSS
Changing the eFSU Rollback Timer
To view or change the eFSU rollback timer, perform the following task before beginning an upgrade:
This example shows how to set the eFSU rollback timer to one hour using both command formats:
Router# config terminal
Router(config)# issu set rollback-timer 3600
% Rollback timer value set to [ 3600 ] seconds
Router(config)# issu set rollback-timer 01:00:00
% Rollback timer value set to [ 3600 ] seconds
Router(config)#
Performing an eFSU Upgrade
To perform an eFSU upgrade (or downgrade) of a VSS, perform this task:
Command Purpose
Step 1 Router# config terminal Enters configuration mode.
Step 2 Router(config)# issu set rollback-timer
{seconds | hh:mm:ss}
(Optional) Sets the rollback timer to ensure that the upgrade
process does not leave the VSS nonoperational. If the timer
expires, the software image reverts to the previous software
image. To stop the timer, you must either accept or commit
the new software image.
The timer duration can be set with one number (seconds),
indicating the number of seconds, or as hours, minutes, and
seconds with a colon as the delimiter (hh:mm:ss). The range
is 0 to 7200 seconds (2 hours); the default is 2700 seconds
(45 minutes). A setting of 0 disables the rollback timer.
Step 3 Router(config)# exit Returns to privileged EXEC mode.
Step 4 Router# show issu rollback timer Displays the current rollback timer value.
Command Purpose
Step 1 Router# copy tftp disk_name Uses TFTP to copy the new software image to flash memory
on the VSS active and VSS standby chassis (disk0: and
slavedisk0:) and to the ICS’s, if they exist. Answer the
prompts to identify the name and location of the new
software image.
Step 2 Router# show issu state [switch/slot] [detail] (Optional) Verifies that the VSS is ready to run the eFSU.
Note You can use the show issu state command at any
stage of the upgrade to verify the progress and status
of the upgrade.
Step 3 Router# issu loadversion
[active_switch/slot] active-image
[standby_switch/slot] standby-image
Starts the upgrade process by loading the new software
image onto the VSS standby chassis. The image name
includes the path of the target image to be loaded, in the
format devicename:filename.
It may take several seconds for the new image to load and
for the VSS standby chassis to transition to SSO mode.