Hi Guys,
I configured as below and hooked up the cables as the diagram. The moment i plugged these cables in the ospf protocol started doing its job.
From the router, I was able to verify the ospf neighbors on both interfaces g0/0/0 and g0/0/1. But for 1-4 minutes after they were up, the OSPF neighbor on g0/0/0 started flapping.
I turned on 'debug ip ospf hello' and see the ospf neighbor from interface g0/0/0 goes down when the logs say 'Too many retransmissions' and 'Nbr 10.1.1.1 192.168.15.42 is currently ignored'
What would causing these? and why's it flapping?
I also replaced new cables but that didn't help. All cables are good.
The attachments are for the map and the router's log.
Thanks.
Nexus A:
interface Ethernet1/1
ip address 172.20.1.1/30
no shut
interface Ethernet1/2
ip address 192.168.15.42/30
no shut
interface loopback 0
ip address 10.1.1.1/32
router ospf 1
router-id 10.1.1.1
network 10.1.1.1/32 area 0
network 172.20.1.1/30 area 0
network 192.168.15.42/30 area 0
----------------------------
Nexus B:
interface Ethernet1/1
ip address 172.20.1.2/30
no shut
interface Ethernet1/2
ip address 192.168.15.46/30
no shut
interface loopback 0
ip address 10.2.2.1/32
router ospf 1
router-id 10.2.2.1
network 10.2.2.1/32 area 0
network 172.20.1.2/30 area 0
network 192.168.15.46/30 area 0
-----------------------------
Router:
Interface g0/0/0
ip address 192.168.15.41 255.255.255.252
no shut
interface g0/0/1
ip address 192.168.15.45 255.255.255.252
no shut
interface loopback0
ip address 10.3.3.1/32
router ospf 1
router-id 10.3.3.1
network 10.3.3.1 0.0.0.0 area 0
network 192.168.15.41 0.0.0.0 area 0
network 192.168.15.45 0.0.0.0 area 0
ip route 0.0.0.0 0.0.0.0 192.168.15.42
ip route 0.0.0.0 0.0.0.0 192.168.15.46
-----------------------------------
