Cisco Cisco Packet Data Gateway (PDG)

 

 

This chapter describes how to configure Interchassis Session Recovery (ICSR) and its associated Service Redundancy 
Protocol (SRP). Refer to the Reverse Route Injection (RRI) chapter of the Security Gateway Administration Guide for 
High Availability (HA) configuration examples that best match your service model. This section focuses on the ICSR 
operation and parameter settings in StarOS running in a virtual machine on each VSM CPU. 

In the context of an ASR 9000 router, a chassis is an ASR 9000 equipped with Virtualized Service Modules (VSMs). At 
least one VSM in each chassis is running one or more VPC-VSM instances as virtual machines (VMs). Each VPC-VSM 
instance is considered to be the server. 

  ICSR is a licensed Cisco feature that requires a separate license. Contact your Cisco account 

representative for detailed information on specific licensing requirements. For information on installing and verifying 
licenses, refer to the Managing License Keys section of the StarOS Management Operations chapter. 

This chapter discusses the following: 

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  An ASR 9000 VSM contains four physical CPUs. Each CPU runs an individual VPC-VSM instance 

(StarOS VM). ICSR must be separately configured on each instance.