Re: [nsp] A newbie question about MPLS

From: Eric Osborne (eosborne@cisco.com)
Date: Fri Nov 30 2001 - 13:49:19 EST


On Fri, Nov 30, 2001 at 06:35:34PM +0000, Giles Heron wrote:
> Eduardo Pannunzio wrote:
> >
> > Hi all,
> >
> > I'm trying to make a MPLS lab experience with 2 routers PEs (7513)and 4 CEs (2514) but I believe is not possible to simulate a MPLS-VPN behavior without others routers like P (providers)between the PEs because a Penultime-Hop-popping . Am I correct?
>
> no - it is perfectly possible to have an MPLS VPN with no P devices
> (i.e. the PE routers are adjacent.)
>

Agreed.

> > Which is the IOS command that could change the rule (if exist)?
>
> I'm not sure you can control this in IOS?
>

You can make RSVP or LDP hand out explicit null rather than implicit,
but there's functionally no difference.

eric

> but in any case it doesn't really matter. MPLS VPN will still work, but
> the routers will never actually impose a tunnel label.
>
> Giles
>
> > Thanks in advanced
> > Eduardo Pannunzio
> > --
> >
> > Eduardo Pannunzio
> > CCNA R&S / WS
> >
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> --
> =================================================================
> Giles Heron Principal Network Architect PacketExchange Ltd.
> ph: +44 7880 506185 "if you build it they will yawn"
> =================================================================





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