Is it possible to use HSRP/VRRP internal one router if you want to have redundancy between two interfaces?
Our customer has router with two Ethernet interfaces.
This two interfaces are connected to two switches, there is also cross cable between the switches.
On the other side of the switches there are two other routers connected.
The customer will not use any routing protocols to get redundancy between the standalone router and the two separated routers.
Need some ideas how we can solved this.
you can use IRB integrated routing and bridging: HSRP will not work as well explained by Jon.
bridge 1 protocol ieee
bridge 1 route ip
bridge 1 bridge ip
no ip addr
no ip addr
ip address x.x.x.x
! this the layer3 interface
be aware that STP will block one link but it will be ready to be used if the first fails
you can uses static routes with IP next hops the ip addresses of the VIP of the HSRP made on the other two routers (on them you can they are two different boxes)
the other two routers will have static routes to the BVI ip address as next hop
be aware that until a router has an ARP entry for the ip next hop and its own interface is up the static route is considered valid
Hope to help