[c-nsp] Troubleshooting OSPF

[Alex]

Vincent,
Check if your IOS code has a fix for CSCdx42637.
CSCdx42637 Bug Details
OSPF LSAs getting Maxaged
Symptoms: A router flushes link-state advertisements (LSAs) that have not
been refreshed for more than 50 minutes.

Conditions: This symptom is observed on a Cisco router that is running Cisco
IOS Release 12.0(19)ST1.

Workaround: There is no workaround. Status
Fixed (Resolved)

Severity
2



Product
Cisco IOS software

Technology


1st Found-In
12.0(19)ST1
Known Affected Versions


Fixed-In
12.0(21)S3
12.0(21.3)S1
12.0(27)SV
12.2(15)BX
12.2(15)BW
12.2(13.3)B
12.2(11.8b)DA
12.2(11.4)DA
12.2(10.7)T
12.2(10.7)S
12.2(10.7)PI5
12.2(10.7)M
12.2(15)ZN
12.2(15)BZ
12.1(24)M
12.1(22b)M
12.1(22.2)E
12.1(22)E3
12.0(21.3)SY1
12.0(21)ST4

Component(s)
ospf

Regression
N

Related Bugs
Cat3550 sends Maxaged LSAs incorrectly after link up
Cat 3550 sends a Maxaged LSA after OSPF neighbor up. Cat3550 has a MaxAged 
LSA in its OSPF database. Either 1) or 2) would be executed to flush 
"to-be-Maxaged" LSAs. 1) "clear ip ospf process" at the isolated box before 
link up. 2) Leave the box more than 70min. so that it can flush them 
automatically. See Big Description. I found other IOSes affected : 
12.1(19)EA1a, 12.1(20)EA1, 12.1(22)EA2 I could not re-create the problem for 
12.1(22)EA3, 12.1(22)EA8

Rgds
Alex

----- Original Message ----- 
From: "Vincent De Keyzer" <vincent at autempspourmoi.be>
To: <cisco-nsp at puck.nether.net>
Sent: Thursday, September 13, 2007 12:37 PM
Subject: [c-nsp] Troubleshooting OSPF


> Hello people,
>
>
>
> I have a (Cisco + Foundry) OSPF network that is causing me some trouble.
> Sometimes routes do disappear from the routing table while they should 
> not.
>
>
>
> Does anybody have a good document about troubleshooting that sort of
> problems? I guess it involves looking at the OSPF database, but I'm pretty
> ignorant about that (and other things, too).
>
>
>
> Any help, specific to Cisco or general (or even specific to Foundry!), is
> appreciated.
>
>
>
> Thanks!
>
>
>
> Vincent
>
>
>
>
>
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