How does MAC Masquerading work exactly?
Hi, I am trying to grasp how exactly MAC Masquerading works, and how it behaves differently during a failover. Situation without MAC Masquerading Every floating Self IP & virtual IP will have a gARP anouncement with the new MAC address issued on the device becoming active, making the switches now route to the new device. Issues can arise if network equipment cannot handle the amount of gARPs. Situation with MAC Masquerading Every floating Self IP in the cluster has the same MAC address. Not sure about the vIPs. During failover, the switches need not learn a new MAC address but just learn it's now available on a new switch. (in our case, L3 switches with OSPF) So how do vIPs fit in the mac masquerade story? And how do switches learn the vIPs/floating Self IPs are now on this port without gARPs? The DevCentral articles do not discuss this in great detail.