Juniper JUNOSE 11.1.0 - REV 4-29-2010 Manual page 70

JUNOSe 11.1.0 Release Notes
During the unified ISSU operation, if you modify the router configuration after
the initialization phase of the process is completed and before you issue the
issu start command to commence the upgrade phase of the unified ISSU
process, the unified ISSU procedure completes successfully and the stateful SRP
switchover process begins to synchronize between the active and standby SRP
modules. When the synchronization process is in progress, the standby SRP
module reloads for the second time. After the second reload of the standby SRP
module ends, the synchronization process also ends properly.
Although the standby SRP module reloads for the second time when it is
synchronized with the upgraded release, normal router operations, such as
handling of subscriber sessions and forwarding of traffic, remain unaffected.
[Defect ID 185517]
62
Known Problems and Limitations