Indeed, there is an additional requirement if the IGP is OSPF, which is as you said that the BGP RID of the iBGP peer needs to match the OSPF RID probably just to check that the IGP route is for the right iBGP peer.
This check will never be satisfied in an environment where a RR is used. Yet another good reason to disable synchronization, which has been disabled by default for quite a while now in IOS.
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this is a specific case where ospf is igp within bgp.By default,BGP identifier & ospf rid is same on each router as both of them use same rule for getting rid..viz.loopback or highest physical ip address.The ospf rid here basically means rid of ASBR speaker within ospf which wud interact with the BGP speaker for injection of routes.this especially comes to fore in cases where Route reflectors are used with an AS IGP not having direct bgp peering between two speakers.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...