[cisco-bba] l2tp tunnel is UP

[Tony]

Yes, L2TP tunnel parameters are negotiated on tunnel creation. If you change the parameters they will have no affect until tunnel is re-created and negotiation happens again. This is similar to most connections that have a negotiation phase. Unless there is a method for dynamic re-negotiation in the middle of the connection, then the only way to get new parameters is forcibly (another example of this would be PPP sessions).

The command "show vpdn" will show which LAC have a tunnel to your LNS. You can then remove the entire tunnel (and all PPP sessions within it) by using the command "clear vpdn tunnel l2tp <LAC>", where you replace <LAC> with the name of the LAC in question (which is given from the "show vpdn" command earlier).




--- On Fri, 2/1/09, raghuram chary <raghujindia at gmail.com> wrote:

> From: raghuram chary <raghujindia at gmail.com>
> Subject: Re: [cisco-bba] l2tp tunnel is UP
> To: "Vince Mammoliti (vmammoli)" <vmammoli at cisco.com>
> Cc: cisco-bba at puck.nether.net
> Date: Friday, 2 January, 2009, 4:44 PM
> Yup,after clearing sessions tunnel is removed. So from this
> I can infer that
> if any changes under  vpdn group are done, a restart of
> sessions needs to
> done.
> Please correct if i'm wrong.
> 
> Thanks for the help
> 
> On Thu, Jan 1, 2009 at 3:04 AM, Vince Mammoliti (vmammoli)
> <
> vmammoli at cisco.com> wrote:
> 
> >  Clear the sessions and see if it removes.
> >
> > V.
> >
> > HNY
> > --------------------------
> > Sent from my BlackBerry Wireless Handheld
> >
> >
> >
> > ----- Original Message -----
> > From: cisco-bba-bounces at puck.nether.net
> <cisco-bba-bounces at puck.nether.net
> > >
> > To: raghuram chary <raghujindia at gmail.com>;
> cisco-bba at puck.nether.net <
> > cisco-bba at puck.nether.net>
> > Sent: Wed Dec 31 11:44:20 2008
> > Subject: Re: [cisco-bba] l2tp tunnel is UP
> >
> >
> > In my experience, the tunnel will remain up until all
> sessions within
> > the tunnel go down.
> >
> > At 08:04 AM 12/31/2008, raghuram chary wrote:
> > >Hi all,
> > >Merry Christmas & Happy New Year to all.
> > >
> > >I have configured vpdn groups on LAC and LNS .I
> brought up single
> > >session.Now on LNS side I removed the
> vpdn-group,but still it shows
> > >Tunnel as UP and session is UP. Is this expected
> behaviour?
> > >Please explain.
> > >
> > >Thank you.
> > >Raghu
> > >_______________________________________________
> > >cisco-bba mailing list
> > >cisco-bba at puck.nether.net
> > >https://puck.nether.net/mailman/listinfo/cisco-bba
> > >
> > >No virus found in this incoming message.
> > >Checked by AVG - http://www.avg.com
> > >Version: 8.0.176 / Virus Database: 270.10.1/1870 -
> Release Date:
> > >12/31/2008 8:44 AM
> >
> > ---
> > Clayton Zekelman
> > Managed Network Systems Inc. (MNSi)
> > 344-300 Tecumseh Rd. E.
> > Windsor, Ontario
> > N8X 5E8
> >
> > tel. 519-985-8410
> > fax. 519-985-8409
> >
> > _______________________________________________
> > cisco-bba mailing list
> > cisco-bba at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-bba
> >
> _______________________________________________
> cisco-bba mailing list
> cisco-bba at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-bba