On Fri, 2021-05-07 at 04:53 +0000, Senthil Kumar Nagappan wrote:
> Hi Joakim,
>
> Thanks for your response.
>
> Will try to elaborate point2 with sample config.
>
> 1. Config at Router R1
>
> lo interface
> interface loopback lo has ip addr 100.100.100.125 
>
> eth1
> for unnumbered borrowing the lo address for eth1 and 100.100.100.126 is the peer address
> ip addr add 100.100.100.125 peer 100.100.100.126 dev eth1
>
> eth2
> for unnumbered borrowing the lo address for eth2 and 100.100.100.126 is the peer address
> ip addr add 100.100.100.125 peer 100.100.100.126 dev eth2

Just to be clear, are those eth I/F directly connected via a cable or is there a switch in between?