[c-nsp] C7301 dropping OSPF

[Mike Louis]

Bill

Do you have multicast routing enabled on your network? If so what multicast addresses are you using?

Can you do a show interface on the routed interfaces and post? Show ip ospf interface as well if you would.

-----Original Message-----
From: Bill Blackford <BBlackford at nwresd.k12.or.us>
Sent: Friday, April 24, 2009 1:17 PM
To: cisco-nsp at puck.nether.net <cisco-nsp at puck.nether.net>
Subject: [c-nsp] C7301 dropping OSPF


PROBLEM:
7301 dropping OSPF adjacencies. The log is showing the following messages:

Apr 23 12:20:01 c7301 392: 000398: Apr 23 12:20:00.016 PDT: %OSPF-5-ADJCHG: Process 5794, Nbr x.x.x.x on GigabitEthernet0/0 from LOADING to FULL, Loading Done
Apr 23 12:20:01 c7301 393: 000399: Apr 23 12:20:00.016 PDT: %OSPF-5-ADJCHG: Process 5794, Nbr x.x.x.x on GigabitEthernet0/1 from LOADING to FULL, Loading Done


During this, all traffic moves over to my other router. BGP peers stay up, but IGP routes get dumped.
The router sees about 200M and 30k PPS on each interface at peak times.
CPU gets to about 55% at peak. This issue is occurring near, but not always at peak.
Code is older, disk0:c7301-js-mz.123-14.T3.bin. But this issue just started showing up. It has me a bit concerned as we just had a series of power events with a misbehaved UPS.


I can ping the multicast address fine:
wsc-rtr-7301#ping 224.0.0.5

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.0.0.5, timeout is 2 seconds:

Reply to request 0 from lo.bdr1.fqdn (x.x.x.x), 1 ms Reply to request 0 from ge-1-0-6.agr1.fqdn (x.x.x.x), 4 ms Reply to request 0 from ge-0-2-v100.bdr1.fqdn (x.x.x.x), 1 ms

wsc-rtr-7301#sh ip os n

Neighbor ID     Pri   State           Dead Time   Address         Interface
x.x.x.x     255   FULL/DR         00:00:06    x.x.x.x    GigabitEthernet0/0
y.y.y.y         25    FULL/BDR        00:00:07    x.x.x.x    GigabitEthernet0/1

The interfaces includes the following:

int gi0/0
ip ospf hello-interval 2
ip ospf priority 25
ip ospf retransmit-interval 1



int gi0/1
ip ospf hello-interval 2
ip ospf priority 30
ip ospf retransmit-interval 1


Thank you in advance for any help.

-b

--
Bill Blackford
Senior Network Engineer
NWRESD

my /home away from home


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