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Determine whether the router hardware and the software release meet the criteria
4.
required for unified ISSU to operate successfully by using one of the following
commands:
host1#show issu
host1#show issu brief
host1#show issu detail
Arm the primary SRP module with the upgrade release.
5.
host1#boot system R2.rel
NOTE: You must arm any hotfixes that need to be loaded with the new release after
you have armed the new release. The hotfixes are supplied when the modules to
which they apply are rebooted.
Synchronize the NVS file system of the redundant SRP module with that of the
6.
primary SRP module.
host1#synchronize
Because the redundant SRP module is running a different release than the armed
release, the module automatically reboots and runs the armed (upgrade) release,
R2.rel.
Wait for the redundant SRP module to boot, initialize, and reach the standby
state. At this point, the REDUNDANT LED on the module is illuminated and the
ONLINE LED is off. The State field in the show version display indicates that the
redundant module is in the standby state.
Synchronize the file system of the primary module with that of the redundant
7.
module.
The NVS file systems of the two SRP modules are unsynchronized because the
redundant SRP module rebooted.
host1#synchronize
Reenable autosynchronization.
8.
host1(config)#no disable-autosync
(ERX1440 only) Configure the ERX1440 license key.
9.
host(config)#license issu xyz123abc
License for ISSU configured.
Determine whether unified ISSU is in the Idle state and whether all upgrade
10.
requirements have been met.
host1#show issu
Chapter 4: Configuring a Unified In-Service Software Upgrade
Upgrading Router Software with Unified ISSU
97
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