Cisco Cisco IOS Software Release 12.4(2)XB6

Run the reload command on the active SUP.

Both active and standby SUP reload simultaneously and come up with the SXE3-based image.

Running the reload command on the active SUP causes both the active and standby Supervisors to reload 
simultaneously, causing some downtime during the upgrade process.

To upgrade an Cisco PDSN image on the SAMI card, follow the directions at:

To change the working configuration on a Cisco PDSN in a live environment:

Bring the standby Cisco PDSN out of service. 

For example, to isolate the standby Cisco PDSN from the session redundancy setup, you must run the 
no cdma pdsn redundancy command.

7600a-Stdy(config)# no cdma pdsn redundancy

Run the write memory command to save the configuration.

Make the necessary configuration changes on the standby Cisco PDSN, and save the configuration.

Run the cdma pdsn redundancy command again and save the configuration.

Issue the reload command to bring the standby Cisco PDSN back into the session redundancy setup with 
the changed configuration. Verify if the processor comes back in the session redundancy setup using the 
following show commands:

7600a-Stdy# show standby brief

                     P indicates configured to preempt.

                     |

Interface   Grp Prio P State    Active          Standby         Virtual IP     

Gi0/0.101   300 110    Standby  20.20.101.10    local           20.20.101.101 

7600a-Stdy# show cdma pdsn redundancy 

CDMA PDSN Redundancy is enabled

CDMA PDSN Session Redundancy system status

  PDSN state = STANDBY HOT

  PDSN-peer state = ACTIVE

CDMA PDSN Session Redundancy Statistics

  Last clearing of cumulative counters never

                      Total              Current

                Synced from active      Connected

  Sessions                15                   15

  SIP Flows               15                   15

  MIP Flows               0                    0

PMIP Flows               0                    0

7600a-Stdy# show redundancy inter-device 

Redundancy inter-device state: RF_INTERDEV_STATE_STDBY

  Scheme: Standby