Re: [nsp] Cisco vs. Juniper of LSP setup

From: Shankar Vemulapalli (svemulap@cisco.com)
Date: Fri Apr 12 2002 - 14:18:38 EDT


Lu -

And to answer your 'wide-metric' question wrt ISIS -

The TE-Extensions information in the form of sub/TLVs
are carried by the TLV 22 and other TLVs as specified in the
draft-ietf-isis-traffic-04.txt and TLV 22/135 are wide-metrics
as opposed to TLV 2/128[130] which are narrow metrics.

/Shankar

At 2:09pm 04/12/02 -0400, Eric Osborne wrote:
> On Fri, Apr 12, 2002 at 10:49:49AM -0700, LU wrote:
> > Sean,
> >
> > If I understand this right, not only IOS does not have
> > the function of ignoring TE datatbase like the
> > "no-cspf" in Juniper, it also can not run RSVP without
> > enabling OSPF opaque LSA on a interface. I have not
> > tried IS-IS, but I assume it has to have the
> > wide-metric enabled in order to run the MPLS-TE,
> > right?
>
> There is no command to explicitly enable/disable opaque LSAs in TE.
> There are two commands you could be referring to - 'mpls traffic-eng'
> under OSPF, or 'mpls traffic-eng' on the interface. Both do more than
> just opaque LSAs, tho.
>
> Why do you want to do this? It works fine in some cases, but if you
> have a no-cspf path and you try to reserve bandwidth on that LSP, you
> can paint yourself into a corner.
>
> There are some legitimate uses of verbatim/no-cspf, but I'm curious to
> see what your use is.
>
>
>
> eric
>



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