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Re: RFC 3032 : Determining the L3 header at egress.

  • From: Robert Raszuk <raszuk@cisco.com>
  • Date: Sat, 30 Jun 2001 17:13:38 -0700
  • CC: "'Alexander Marhold'" <alexander@marhold.at>, mpls-ops@mplsrc.com
  • Organization: Signature: http://www.employees.org/~raszuk/sig/
  • Resent-Date: Sat, 30 Jun 2001 21:34:01 -0400
  • To: Doug Stanfield <DOUGS@oceanic.com>


Doug,

No this is just Alex typo. He meant to say L2 Transport over MPLS and
not over MPLS/VPNs. You are correct over MPLS-VPNs you can only carry
ipv4 unicast at the present shipping code. Extensions to carry ipv6 as
well as mulitcast are comming shortly.

R.

> Doug Stanfield wrote:
> 
> Alexander,
> 
> In your response to another thread, "RFC 3032 : Determining the L3 header at
> egress", you said the following:
> > 3) L2 transport over MPLS/VPN
> > By creating 2 tunnels between ingress and egress and
> > exchanging labels via
> > LDP/TDP between the non-adjacent head and tail-nodes of the
> > tunnel, the
> > correspondence between packettype/destination and label is
> > given. ( this is
> > true for any L2 over MPLS)
> 
> Somehow in my reading I hadn't got that L2 over MPLS/VPN was particularly
> easy if at all possible.  Your statement implies both.  Do you have pointers
> to further reading or links to Cisco configs (frame based) or even advice on
> how I might proceed to test and implement something?
> 
> Thanks,
> 
> -Doug-
> 
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