I have two routers mulithomed to one ISP so we have 2 CE's(r1 and r2) with ebgp peerings with 2 x ISP PE routers.Our own two routers r1 and r2 have an ibgp peering.My question is as follows. Recently we had issues on the primary due to insufficient memory resources so I failed over manually( lowered metric and switched over HSRP) on to the backup router ; now all traffic is using backup as the entry/exit point which is fine. We are now also getting a default route of the ISP to R1 and the full table to R2.
One thing I have noticed is that R1 even thought it is now getting a default route from the ISP we still get the full bgp table of R2 through the ibgp peering. Should I have some filtering in place here ?What is the best thing to do and is it any cause for concern ?