Manual

Cisco IOS In Service Software Upgrade Process
Information About Performing ISSU
8
Cisco IOS Release 12.2(28)SB
After switchover, the standby RP takes over as the new active RP (see Figure 4).
Figure 4 Switch Over to Standby RP
Line cards
Active
Route
Processor
Cisco IOS
12.x(y)S
Cisco IOS
12.x(y)S
Cisco IOS
12.x(y)S
Switchover
Switchover
Run new version
of Cisco IOS
on standby
Cisco IOS
12.x(z)S
Standby
Route
Processor
127260