Change Details

Quagga is used to tell other machines which way to send traffic. We have 2 routers: - router-002 (BACKUP) - router-003 (MASTER) When the MASTER fails: [x] CARP → BACKUP takes the VIP [x] OVH script → sets the correct MAC address (T2276) BUT… ❌ The other machines on the network won't know that it's changed : They know about the VIP, but they also need to know which route to take to reach it.

Quagga is used to tell other machines which way to send traffic. We have 2 routers: - router-002 (BACKUP) - router-003 (MASTER) When the MASTER fails: [x] CARP → BACKUP takes the VIP [x] OVH script → sets the correct MAC address (T2276) BUT… ❌ The other machines on the network won't know that it's changed : They know about the VIP, but they also need to know which route to take to reach it. ------------- So basically : If by example 51.68.252.230 is currently pointing to 172.27.27.251 on gre1, it means that Windriver is currently using the tunnel to the active router. Therefore, if the other router takes over after a failover, the route must change to point to the other tunnel/next-hop. Otherwise, Windriver will continue to send traffic to the old path, which will no longer be the correct one.

Quagga is used to tell other machines which way to send traffic. We have 2 routers: - router-002 (BACKUP) - router-003 (MASTER) When the MASTER fails: [x] CARP → BACKUP takes the VIP [x] OVH script → sets the correct MAC address (T2276) BUT… ❌ The other machines on the network won't know that it's changed : They know about the VIP, but they also need to know which route to take to reach it. ------------- So basically : If by example 51.68.252.230 is currently pointing to 172.27.27.251 on gre1, it means that Windriver is currently using the tunnel to the active router. Therefore, if the other router takes over after a failover, the route must change to point to the other tunnel/next-hop. Otherwise, Windriver will continue to send traffic to the old path, which will no longer be the correct one.