Tuesday, November 24, 2020

VRRP question

Hey, r/networking . Long time lurker, first time poster.

I know it`s probably a really stupid question, but still..here is the long version:

I have configured vrrp before, but on private networks. Now we have a client, that wants edge switch, connected to 2 routers (that should be in VRRP), and the routers downlink to their internal network.

The incoming connections in the edge switch are multiple ISPs with multiple vlans (remote video streaming). The client has a separate AS with different ISP configured as peers.

So far the client had one hello router and there was no problem. Question is: how do we configure vrrp on those routers without requesting more public IPs (AFAIK vrrp requires at least 2 different IPs - one for virtual router (that can be a Physical interface as well, and one for the backup device in the same network). The interfaces are all subinterfaces really, but that shouldn`t matter I think.

tldl: How to configure vrrp with only 1 public IP interface?



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