07-09-2008 08:30 AM - edited 03-06-2019 12:05 AM
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.
07-09-2008 12:40 PM
sh run int f0/0
sh run | sec eigrp
07-10-2008 05:57 AM
R1
interface FastEthernet0/0
ip address *.253 255.255.255.128
no ip redirects
ip authentication mode eigrp 48 md5
ip authentication key-chain eigrp 48 eigrp48
ip nat inside
ip virtual-reassembly
service-policy output setTOS
no ip mroute-cache
speed 100
full-duplex
standby 1 ip *.254
standby 1 preempt
standby 1 track Serial0/0
router eigrp 48
network 1.0.21.172 0.0.0.3
network *.128 0.0.0.127
neighbor *.252 FastEthernet0/0
no auto-summary
no eigrp log-neighbor-changes
no eigrp log-neighbor-warnings
-----
R2
interface FastEthernet0/0
ip address *.252 255.255.255.128
no ip redirects
ip authentication mode eigrp 48 md5
ip authentication key-chain eigrp 48 eigrp48
no ip mroute-cache
speed 100
full-duplex
service-policy output setTOS
standby 1 ip *.254
standby 1 priority 95
standby 1 preempt
router eigrp 48
network 1.0.21.176 0.0.0.3
network *.128 0.0.0.127
neighbor *.253 FastEthernet0/0
no auto-summary
no eigrp log-neighbor-changes
no eigrp log-neighbor-warnings
I removed NAT, authentication and QoS during my troubleshooting. No change. Seems like the problem would be on a switch if I can hit both routers via 224.0.0.10 on one switch but not the other.
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