SRP Redundancy, AAA and Diameter Guard Timers 346
DSCP Marking of SRP Messages 347
Optimizing Switchover Transitions 347
Allow Non-VoLTE Traffic During ICSR Switchover 348
Allow All Data Traffic 350
Allow Early Active Transition 350
Graceful Cleanup of ICSR After Audit of Failed Calls 350
Optimization of Switchover Control Outage Time 351
Configuring the SRP Context Interface Parameters 351
Configuring NACK Generation for SRP Checkpoint Messaging Failures 352
Enabling NACK Messaging from the Standby Chassis 352
Selective Disabling of NACK Messaging 353
Configuring LZ4 Compression Algorithm 353
Reducing Sync-Up Time with Standby ICSR Chassis 353
Verifying SRP Configuration 354
Modifying the Source Context for ICSR 354
Configuring BGP Router and Gateway Address 355
Configuring the SRP Context for BGP 355
Verifying BGP Configuration 355
Modifying the Destination Context for ICSR 356
Configuring BGP Router and Gateway Address in Destination Context 356
Configuring SRP Context for BGP for Destination Context 356
Setting Subscriber to Default Mode 356
Verifying BGP Configuration in Destination Context 357
Disabling Bulk Statistics Collection on a Standby System 357
Verifying the Primary and Backup Configuration 357
Configuring Subscriber State Management Audit Process 358
Troubleshooting ICSR Operation 358
Updating the Operating System 359
Both ICSR Systems 364
Downloading and Transferring the StarOS Image 364
Standby ICSR System 365
Performing Health Checks 365
Performing SRP Checks 365
Performing BGP Checks 366
ASR 5500 System Administration Guide, StarOS Release 21.4
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