Must be missing something simple here...
Have two 2600's on a LAN connected through two 2950's. They neighbor up with our core through GRE tunnels, but they will not neighbor over the LAN.
router1(.253)->switch4(.247)->switch1(.250)-> router2(.252)
If I put a static neighbor statement in, they neighbor.
from switch1, when I ping 224.0.0.10, both routers reply. From switch4 only r1 replies.
On switch4, port mirroring is enabled, but not on the ports going to r1 or s1. And when disabled, it doesn't make a difference.
On r1, I will show a neighboring relationship that will flap, but nothing on r2.
On r1:
Jul 9 10:22:07: EIGRP: Sending HELLO on FastEthernet0/0
Jul 9 10:22:07: AS 48, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0
Jul 9 10:22:08: EIGRP: Received HELLO on FastEthernet0/0 nbr *252
Jul 9 10:22:08: AS 48, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/1
On r2 (ignore time/date):
*Mar 12 19:47:25: EIGRP: Sending HELLO on FastEthernet0/0
*Mar 12 19:47:25: AS 48, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0
*Mar 12 19:47:25: EIGRP: Received UPDATE on FastEthernet0/0 nbr *.253
*Mar 12 19:47:25: AS 48, Flags 0x9, Seq 16056/0 idbQ 0/0
*Mar 12 19:47:25: EIGRP: Neighbor(*.253) not yet found
I show sending packets, but no receives.
Ideas? I haven't detailed everything I've tried, but I'll leave that for any questions.
