Scenario 1.1 - Manual cluster failover w/ no special configuration
Manual removal of primary ISP link Failure Scenario 1 - ISP link-down
1. No Special Config
Result - 1m28s down w/ ~56 pings lost
2. GRE Keepalives enabled
Result - ~5.5s w/ 5 pings lost
3. GRE KA’s and graceful-restart enabled
Result - same as 1.2 (~5.5s w/ 5 pings lost)
4. GRE KA’s and BFD enabled
Result - ~1s w/ 1 ping lost