From: Jim Newton (jnewton@xxxxxxxxxxxxxxx)
Date: Fri Dec 21 2001 - 12:08:29 GMT-3
Also, if you DSU goes into a loopback mode, you will see this. If you are
working with external DSUs, check them to see if they may be doing this. If
you are working with real circuits, check to see if you have a
malfunctioning smart-jack.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Stephen C. Feldberg
Sent: Friday, December 21, 2001 8:58 AM
To: Annu; ccielab@groupstudy.com
Subject: Re: OSPF & Looped interface
You can fool a serial link (using HDLC, FR LMI will not go for this) into
staying up using a software loopback. This is implemented under interface
configuration mode with the loopback/no loopback commands. If you did not
implement this intentionally, perhaps you fatfingered a config statement -
check your running-config.
Steve
----- Original Message -----
From: "Annu" <annu_roopa@yahoo.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, December 18, 2001 2:51 PM
Subject: OSPF & Looped interface
> Group,
>
> While configuring OSPF and Virtual links one of my
> links kept going down due to the following
> reason.Anyone seen this and what could be the cause
> for it ?
>
> r10#show ip ospf int ser0
> Serial0 is up, line protocol is up (looped)
> Process ID 100, Router ID 193.1.1.1, Network Type
> POINT_TO_POINT, Cost: 64
>
> Annu.
>
> =====
> Thanks in advance for ur time and replies.
> Annu.
>
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