ICSR Operation 271
Chassis Initialization 271
Chassis Operation 271
Chassis Communication 271
Chassis Switchover 271
Configuring ICSR 271
Configuring the Service Redundancy Protocol (SRP) Context 272
Creating and Binding the SRP Context 273
Configuring SRP Context Parameters 273
Basic Parameters 273
SRP Redundancy, AAA and Diameter Guard Timers 274
DSCP Marking of SRP Messages 275
Optimizing Switchover Transitions 275
Allow Non-VoLTE Traffic During ICSR Switchover 276
Allow All Data Traffic 278
Allow Early Active Transition 278
Graceful Cleanup of ICSR After Audit of Failed Calls 278
Optimization of Switchover Control Outage Time 279
Configuring the SRP Context Interface Parameters 279
Configuring NACK Generation for SRP Checkpoint Messaging Failures 280
Enabling NACK Messaging from the Standby Chassis 280
Selective Disabling of NACK Messaging 281
Configuring LZ4 Compression Algorithm 281
Reducing Sync-Up Time with Standby ICSR Chassis 281
Verifying SRP Configuration 282
Modifying the Source Context for ICSR 282
Configuring BGP Router and Gateway Address 283
Configuring the SRP Context for BGP 283
Verifying BGP Configuration 283
Modifying the Destination Context for ICSR 284
Configuring BGP Router and Gateway Address in Destination Context 284
Configuring SRP Context for BGP for Destination Context 284
Setting Subscriber to Default Mode 284
Verifying BGP Configuration in Destination Context 285
Disabling Bulk Statistics Collection on a Standby System 285
ASR 5500 System Administration Guide, StarOS Release 21.5
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