I have EXISTING Lan Extension between two sites A(Cat4006) & B(cat3750).I want to implement Backup LAN extension so that link between two sites is always maintained.Please see below the existing configuration and please tell me what I need to configure on the switches for the backup link to failover in case of primary link failure.I have to use STATIC routing to get this working.
Site A :(Cat4006)
ip address 10.100.100.1 255.255.255.248
ip route 10.32.50.0 255.255.255.0 10.100.100.2
ip route 10.32.52.0 255.255.255.0 10.100.100.2
description LanX HQ
ip address 10.100.100.2 255.255.255.248
ip route 0.0.0.0 0.0.0.0 10.100.100.1