What is the standby use-bia command and how does it work?
A. By default, HSRP uses the preassigned HSRP virtual MAC address on Ethernet and FDDI, or the functional address on Token Ring. In order to configure HSRP to use the burnt-in address of the interface as its virtual MAC address, instead of the default, use the standby use-bia command. For example, on Token Ring, if Source Route Bridging is in use, a Routing Information Field (RIF) is stored with the virtual MAC address in the RIF cache of the host. The RIF indicates the path and final ring used to reach the MAC address. As routers transition to the active state, they send gratuitous Address Resolution Protocols (ARPs) in order to update the ARP table of the host. However, this does not affect the RIF cache of the hosts that are on the bridged ring. This situation can lead to packets being bridged to the ring for the previous active router. In order to avoid this situation, use the standby use-bia command. The router now uses its burnt-in MAC address as the virtual MAC address. Note: Us
