From: Annu (annu_roopa@xxxxxxxxx)
Date: Fri Dec 21 2001 - 13:24:11 GMT-3
Jim,steve
No i have no external CSU/DSU.I also do not have any
additional cmd added intenionally or otherwise.
Removed the serial cable and reconnected them back
after doing manual 'shut' and 'no shut' and it
worked.No idea what was wrong ?
Thanks for u replies.
Annu
--- Jim Newton <jnewton@InternetNOC.com> wrote:
> 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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