As shown in the schema i need to configure my Switch L3 to track the state of both serial links (Lised Line and X25) in order to join the remote site with LAN 10.10.0.0 /16.
You cant use the 3550 to track the state of the Serial links, but you can configure the 3800's to share an IP address on the segment to the switch so that only the one with a working serial connection handles the traffic. The feature is HSRP:
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: