From the course: Cisco CCNP Enterprise: ENCOR v1.1 (350-401) Cert Prep

Unlock this course with a free trial

Join today to access over 24,900 courses taught by industry experts.

Stateful switchover (SSO)

Stateful switchover (SSO)

From the course: Cisco CCNP Enterprise: ENCOR v1.1 (350-401) Cert Prep

Start my 1-month free trial Buy for my team

Stateful switchover (SSO)

“

If we have a router with a couple of route processors, we'll call them RP1 and RP2, we can have redundancy within our router chassis, but there's a challenge, if route processor 1 is currently active and we have a neighbor with another router, maybe OSPF, maybe ELGRP, but we've got a neighbor with another router. If RP1 were to go down, that primary route processor and we failed over to RP2, what might happen temporarily anyway is we're going to lose that neighborship, and we're going to have to reform another neighborship between our second route processor, RP2, and our neighbor, which in this case is R2. That's the main issue. We're trying to prevent that re-establishment of a neighborship, when we're failing over between a primary and a secondary route processor. To address that main issue, we can use a feature called SSO or Stateful Switch Over. With SSO, we are continually sending configuration and state information…

Contents