[cisco-bba] l2tp tunnel is UP

raghuram chary raghujindia at gmail.com
Fri Jan 2 07:05:28 EST 2009


Thanks a ton to all. :)

On Fri, Jan 2, 2009 at 11:47 AM, Tony <td_miles at yahoo.com> wrote:

> 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
> > > >_______________________________________________
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> > > >
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> > 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
> > >
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