Cisco Stateful Switchover. Cisco Unified Border Element Configuration Guide Stateful Switchover This means that when the primary controller fails, there is a sub-second (yes, less than one-second. With Stateful Switchover (SSO), Cisco IOS routers with dual RPs can synchronize router configuration and control plane state information
Cisco Nonstop Forwarding with Stateful Switchover Deployment Guide from www.cisco.com
1-3 Cisco IOS Software Configuration Guide, Release 15.0SY Chapter 1 Stateful Switchover (SSO) Information About SSO • Interfaces on the RP itself are not stateful and will experience a reset across switchovers With this mechanism, non-stop forwarding is achieved
Cisco Nonstop Forwarding with Stateful Switchover Deployment Guide
Bulk Synchronization During Initialization WhenasystemwithSSOisinitialized,theactiveRPperformsachassisdiscovery(discoveryofthenumber andtypeoflinecardsandfabriccards. In other words, standby route processor takes control and maintain protocols With Stateful Switchover (SSO), Cisco IOS routers with dual RPs can synchronize router configuration and control plane state information
Cisco Nonstop Forwarding with Stateful Switchover Deployment Guide. SSO checkpointing is the process of mirroring information between RPs In particular, the GE interfaces on the RPs are reset across switchovers and do not support SSO.
Cisco Catalyst 9200 Series Switches Stoneleigh Consultancy Limited. When we use Stateful Switchover (SSO), device uses double route processors In other words, standby route processor takes control and maintain protocols