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[-OPS]: RE: MPLS over Cable

  • From: Doug Stanfield <DOUGS@oceanic.com>
  • Date: Fri, 15 Mar 2002 09:50:48 -1000
  • Cc: "Benitez, Veronica" <Veronica.Benitez@getronics.com>
  • Resent-Date: Fri, 15 Mar 2002 15:56:58 -0500
  • To: "'Vergara, Hugo'" <Hugo.Vergara@getronics.com>, mpls-ops@mplsrc.com

Title: RE: MPLS over Cable

Hi,
> Somebody has information about MPLS Networks with  Cable
> Routers and Cablemodems.

We've implemented MPLS VPN in a network and attached some CMTSs to extend the logical networks through the cable modem to the customers.

> For example CableRouter works like PE and CableModems like CE.

Not at this time, but sort of.  Our cable modems so far are just bridging so not exactly a CE.  If you're familiar with the provisioning process for cable modems you're aware there is a complicated process of assignment of address for modem and customer equipment.  The end result is that the cable modem is associated with a cable port sub interface that is then mapped to an appropriate vrf.

> And VPN ( VRF) Mapping with 802.1Q in switches LAN.

That too.  They both look similar in terms of config.  They're sub interfaces on the router to which you add something like (on a Cisco):

ip vrf forwarding netx

and the appropriate mapping such as

encapsulation dot1Q 1000

Hope that helped.

-Doug-