Cisco Cisco IOS Software Release 12.4(22)XR

5

Install the new SAMI card on 7600/720 that is to be used in redundant configuration.

In the existing Cisco PDSN Release 4.0, erase the existing configuration on all 
processors and reload the Cisco PDSN.

Configure the IOMEM size on all processors as 256 MB and save the configuration to 
the NVRAM. 

If you have set the IOMEM size as 64 MB, ensure that you configure the memory 
lite command. The recommended memory size is, however, 256 MB.

Upgrade both the SAMI blades to Cisco PDSN Release 5.5. 

Shut down the blade for configuration as standby (unit2). 

Enable autosynchronization on the active blade (unit1). Configure the PDSN on active 
blade on processor 3. Keep unit2 as a standby in a redundant configuration. When 
configuring redundancy, you must configure the Hot Standby Router Protocol (HSRP) 
main interface before configuring Interprocessor Communication (IPC).

Save the configuration on the active blade.

Bring up unit2 with Cisco PDSN Release 5.5 image. Configurations are 
autosynchronized from the active blade.

Verify the output of the show redundancy state and show redundancy inter device 
commands on both active and standby blades to confirm if redundancy is enabled. If the 
output for one of the blades requires a reload to enable redundancy, reload that blade.

Provision MS and PCFs to use the newly added Cisco PDSN Release 5.5-based PDSN 
IP.

Use the CDMA-1x IP address on the PDSN as controller or member IP when 
provisioning.

Provision the newly added PDSN with that of the HA to service MIP calls. 

You can configure the Cisco PDSN to act as controller and collocated member. 

In the case of a collocated member, ensure that you enable session redundancy, so 
that the standby is synchronized with sessions handled by the collocated member.   

For an active controller to synchronize the information with the standby controller, 
ensure that all remote members connect to the HSRP main interface of the 
controller.   

If the member IP is configured, ensure that it is the same as the CDMA -1x interface 
IP address.