Change Details

Quagga is used to tell other machines which way to send traffic. > It is an open-source routing software that implements protocols like OSPF : It allows routers to automatically exchange routing information and update paths dynamically when the network changes. 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 points to 172.27.27.251 via gre1, it means Windriver is currently sending traffic through the tunnel gre1 connected to the active router (the MASTER). 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. ----------------------- References : https://fr.wikipedia.org/wiki/Quagga_(logiciel) https://enotepaper.wordpress.com/2014/01/08/installing-quagaa-on-freebsd/

Quagga is used to tell other machines which way to send traffic. > It is an open-source routing software that implements protocols like OSPF : It allows routers to automatically exchange routing information and update paths dynamically when the network changes. 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 points to 172.27.27.251 via gre1, it means Windriver is currently sending traffic through the tunnel gre1 connected to the active router (the MASTER). 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. So the goal is to use an open-source OSPF implementation to dynamically update routing towards the VIP when a failover occurs, ensuring traffic is always sent to the active router. ----------------------- References : https://fr.wikipedia.org/wiki/Quagga_(logiciel) https://enotepaper.wordpress.com/2014/01/08/installing-quagaa-on-freebsd/

Quagga is used to tell other machines which way to send traffic. > It is an open-source routing software that implements protocols like OSPF : It allows routers to automatically exchange routing information and update paths dynamically when the network changes. 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 points to 172.27.27.251 via gre1, it means Windriver is currently sending traffic through the tunnel gre1 connected to the active router (the MASTER). 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. So the goal is to use an open-source OSPF implementation to dynamically update routing towards the VIP when a failover occurs, ensuring traffic is always sent to the active router. ----------------------- References : https://fr.wikipedia.org/wiki/Quagga_(logiciel) https://enotepaper.wordpress.com/2014/01/08/installing-quagaa-on-freebsd/