The MPLS-OPS Archive

Cell Relay Retreat>MPLS-OPS Archive>month:2001-Nov> msg00151



[Date Prev][Date Next][Thread Prev][Thread Next]  
  [Date Index][Thread Index][Author Index][Subject Index]

Re: Fwd: FW: How to Differentiate Traffic ?

  • From: Robert Raszuk <raszuk@cisco.com>
  • Date: Wed, 28 Nov 2001 10:24:47 +0100
  • CC: mpls-ops@mplsrc.com
  • Organization: Signature: http://www.employees.org/~raszuk/sig/
  • Resent-Date: Wed, 28 Nov 2001 06:03:12 -0500
  • To: ccasey@bigfoot.com

Hi Chris,

> However how can this be implemented if:
> 
> 1. You have a CPE that does not support this? Like a DSL Bridge as an
> example.

I am surprise that you would connect DSL bridge directly into the PE.
Usually it goes to NAS then via some L2 encapsulation (for example l2tp)
to PEs.
 
> 2. You do not have a CPE. EG: Ethernet port off a L2 LAN Switch in a MTU
> model.

Well most ethernet switches support VLANs. That's all what you need.
Also linux supports both GRE and vlans so you can easily use this as
solution as well.

R.

> "Chris C.," wrote:
> 
> Robert,
> 
> I have see this solution recommended several times before in real life. Both
> Cisco and Juniper seem to follow this path.
> 
> However how can this be implemented if:
> 
> 1. You have a CPE that does not support this? Like a DSL Bridge as an
> example.
> 
> 2. You do not have a CPE. EG: Ethernet port off a L2 LAN Switch in a MTU
> model.
> 
> It seems in this case you need to be able to cater for this functionality at
> the PE. Right?
> 
> >-----Original Message-----
> >From: Robert Raszuk [mailto:raszuk@cisco.com]
> >Sent: Tuesday, November 27, 2001 6:40 PM
> >To: krishnak@sify.com
> >Cc: MPLSRC
> >Subject: Re: How to Differentiate Traffic ?
> >
> >KK,
> >
> > > In this situation, customer is using MPLS VPN for his VPN requirements.
> >But some of his
> > > traffic has to come out onto the Provider network, say for accessing
> >server located on
> > > Service provider's backbone.
> >
> >The simplest way to separate the traffic which destination is provider's
> >global table at least from the forwarding perspective is to build a GRE
> >tunnel on the PE-CE int and therefor have additional logical
> >subinterface into your PE.
> >
> >R.
> >
> 
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
> 
> -------
> The MPLS-OPS Mailing List
> Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
> Archive: http://www.mplsrc.com/mpls-ops_archive.shtml

-------
The MPLS-OPS Mailing List
Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
Archive: http://www.mplsrc.com/mpls-ops_archive.shtml