[j-nsp] OSPF route flapping

[Javier Gallardo (DF/TEM)]

Hi Erdem,

I made a revison for physical link and it doesn´t flap. I check with ping to Summmit interfase.

No, I activate the traceoptions with "flag packets detail" and the output is in the attached file.

Do you know why appears the states QUIET->QUIET , QUIET->PURGE_PENDING.

Too, from the next printouts (taken with brief difference time), I saw the Age changes abruptly to 3600 from  a value lower to 7. 

M20# show ospf database advertising-router 0.164.219.227 extern 
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Extern   13.52.120.64     0.164.219.227    0x802ec970     2  0x2  0xe7bc  36

Extern   13.52.120.64     0.164.219.227    0x802ec96e  3600  0x2  0xebba  36

I´ll appreciate your comments.

Thanks and regards.

//Javier

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net]
Sent: Viernes, 17 de Junio de 2005 02:54 p.m.
To: Javier Gallardo Córdova
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] OSPF route flapping


Hi,

 I might be re-stating the obvious but are you sure the physical links
don't flap?
Otherwise, it might be an MTU issue, maybe.

 You can turn on ospf traceoptions with something like;

traceoptions {
flag packets detail;
    flag database-description detail;
    flag error detail;
}

 Cheers,
 Erdem
On 6/17/05, Javier Gallardo Córdova <jagc64 at yahoo.com> wrote:
> Hi,
> 
> I have the next behavior at M20 route table for several statics routes announced by a Summit48si via OSPF.
> Jun 17 12:42:33 RELEASE  13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Release Int Ext>
> Jun 17 12:42:33 ADD      13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Int Ext>
> Jun 17 12:42:43 RELEASE  13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Release Int Ext>
> Jun 17 12:42:43 ADD      13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Int Ext>
> Jun 17 12:42:53 RELEASE  13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Release Int Ext>
> Jun 17 12:42:53 ADD      13.52.120.64/30    gw 192.168.2.50    OSPF     pref 150/0 metric 7/0 fe-0/1/2.0 <Int Ext>
> 
> Someone know why is the route flapping with 10 seconds period?.
> 
> Thanks and regards.
> //Javier
> 
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