MPLS MP-IBGP configuration

[ganpatspatil]

Hi,

I have configured following senario

PE1-s1/0--------P1---P2------s1/0-PE2

10.10.10.1 10.10.30.2

PE1 -s1/0-10.10.10.1

PE2 -s1/0-10.10.30.2

I have configured the IBGP between PE1 and PE2 with physical interface IP address.

I can see the BGP session is UP between PE1 and PE2.

I have configured (activate) MP-IBGP between PE1 and PE2.

And i received the following message on the PE1 router.

%BGP-4-vpnv4NH_IF:next-hop 10.10.10.1 may not be reachable from neighbour 10.10.30.2 - not a loopback.

Can anyone please explain me what is this mean?

[iamtonythompson]

Well, its the same issue, except my iBGP peer is a DMVPN Hub Tunnel IP address.

So I only get this message (%BGP-4-vpnv4NH_IF:next-hop x.x.x.x may not be reachable from neighbor x.x.x.x - not a loopback.) on XE 17.9.5a, (the rest of network is 17.9.4a)

Its MPLSoDMVPN, and all the iBGP peers on this DMVPN are the tunnel IPAs.

I'm not aware of any connectivity problems at all, just curious about the message, and the explanation Harold Ritter makes sense to me, as the iBGP peers from hub to spoke are on the same L3 subnet.

Just want to head off a problem is all... if it is a problem ie: should my iBGP peers be a loopback instead?

Thx, Tony

[MHM Cisco World]

Just please add new post'

This old post so maybe me only notice it' if you make new post all will read and share there opinion 

MHM

[Harold Ritter]

Hi @iamtonythompson ,

Yes, this restriction of using the loopback interface ip address would still apply.

Regards,