The MPLS WG Archive

[chaos is <choas_is@yahoo.com>]

I understand your point and feel my question was not
clear. Lets assume the servive provider MUST implement
an LDP application PE to PE. Now lets assume there are
two layers of P devices, core and distribution.
Naturally the distribution P devices support LDP. So
my question is this:

Does the core P device need to support LDP? Or can
this device function as a pure layer-2.5 switch
without LDP enabled or implemented. 

Anyone?


--- Wushao Wen <wswen@ece.ucdavis.edu> wrote:
> Chaos,
> 
> I think for the VPN, it only rely on the mpls
> switching table. LDP is not
> a requirement as long as we have some mechanism to
> distribute and setup
> label mapping table. In light of this, LDP is not a
> requirement because
> you have the RSVP-TE. 
> 
> Thanks!
> 
> 
> 
> Wushao
> 
> > Greetings WG. I have a question that needs your
> > enlightened opinion. Let's assume some core device
> (or
> > P device) implements (or just activates) IS-IS TE
> and
> > RSVP-TE. 
> > 
> > Now let's assume a network provider wants to
> provide
> > RFC 2547-based VPNs or some other similar
> application
> > requiring LDP utilizing the above core (or P)
> device. 
> > 
> > Does the core (or P) device need to implement (or
> > activate) LDP? Lets assume the provider network
> > consists of typical PE devices and perhaps another
> > layer of P devices that support full
> functionality. 
> > 
> > If my question is not clear, I can restate.
> > 
> > Cheers!
> > 
> >  
> > 
> > __________________________________________________
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> 


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