I have tried the 0.0.0.0 route as you describe but that has not changed the behaviour. I thought I was able to ping the webserver, but running through the packet simulation, traffic hits "Router" and comes back successful, it does not travel through to the webserver, so ...
Fix PAT ACL "blocking" on left router. Then ISP router does not need default router pointing to you. But it could have 2 static route with different ADs so that one is a backup one.I would add layer 2 switches, aka access layer, to connect PCs. Then you could enable HSRP...
When two BGP peers first establish a connection, they send to each other what they capabilities are. This is not sent during each keepalive, so if a router is reconfigured for a change of capability, it must tear down the peering and rebuild it, in order for both routers to agree on t...