How do I achieve redundancy in my setup with this topology

General questions
1

Hi Team,

I have configured R1 and R2 as a vyos router. Both have reachability to 10.100.0.0/16 subnet. However on L3 switch HO it does not support dynamic protocols and I need to achieve failover or redundancy for 10.100.0.0/16 from 172.31.21.0/24

Primarily traffic is routed to 10.11.12.2 for 10.100.0.0/16 and R1 has eBGP enabled with remote L3. wanted to ensure lets suppose if my connectivity between 192.168.5.1 and 2 fails I have a Site-site tunnel configured as well between R2 and remote L3 which is through Internet and VTI again those have BGP peering enabled for 10.100.0.0/16

Once possibility I was thinking about joingin R1 and R2 and can configure bgp there? or route redistribution? Pls help

BGP-HA
BGP-HA1280×720 72.5 KB

2

Please confirm if configuring iBGP between R1 and R2 will achieve desired results?

3

I guess there is a issue on Topology. L3 at remote end has two AS running and which is not a acceptable solution I believe.

4

OK - Finally I resolved with lot of R&D. However my topology assumption was wrong since AS is global to router and I was assuming router or firewall is part of Two AS.

I had to configure ebgp between R1-R2 and given higher weightage to R1 path.
Is anything else that I need to consider?