Cisco Cisco Packet Data Gateway (PDG)

 

config 

   task facility sessmgr max 32 

This command limits the number of sessmgrs to 32. The actual number of sessmgrs that are created varies based on the 
amount of vRAM allocated when the StarOS virtual machine is created. 

Interchassis Session Recovery (ICSR) is implemented for Reverse Route Injection (RRI) to ensure that the routes are 
injected correctly on the appropriate VPC-VSM instance to route the traffic to the correct interface after an ICSR 
switchover.  

ICSR can be implemented for: 



 

Intrachassis or cluster card-level redundancy 



 

Interchassis L2 card-level redundancy 



 

Interchassis L3 card-level redundancy (requires anchor route and HSRP) 

  RRI is mandatory for site-to-site (S2S) StarOS WSG service and optional for remote access service 

(RAS). 

For additional information, see the Security Gateway Administration Guide. 

Chassis-to-chassis redundancy employs Cisco Hot Standby Router Protocol (HSRP) to detect failure in the system and 
notify other elements of the need to change their HA State. Each VPC-VSM instance receives these notifications via 
oneP (Connected Apps) communication. 

An external HSRP-aware entity switches traffic from the primary to the backup ASR 9000 chassis. All application 
instances must failover to the backup ASR 9000 chassis.