The MPLS-OPS Archive

[Robert Raszuk <raszuk@cisco.com>]

Karl,

Thx for Cosine's senior marketing ad here, but vrf in both cisco &
juniper implementations is a real router with it's own RIB & FIB as
well. I really get a bit upset when clueless people talk about vrf like
this: "rather than just a entry into the MPLS core".

R.

> Karl Garcia wrote:
> 
> Just to throw another perspective into the fray, there is equipment
> available
> today that will allow the decision about when to leave the private
> network to
> be made at the provider's site.  Essentially this turns the VRF into a
> real
> router, rather than just a entry into the MPLS core.  You would
> probably
> need some kind of firewall at the egress point too.  All this
> functionality
> can be provided by one device.
> 
> Designed this way, the CPE could be anything from a full router to
> just a DSL line.
> No provider management necessary at all.  And this would eliminate the
> 
> need for special GRE or VLAN configuration (and overhead !!) too.
> 
> ___________
> Karl
> 
> Karl Garcia
> Sr. Mrkt. Engr.
> CoSine Communications, Inc.
> www.cosinecom.com
> 
> -----Original Message-----
> From: Chris C., [mailto:theguber@hotmail.com]
> Sent: Wednesday, November 28, 2001 2:41 AM
> To: raszuk@cisco.com
> Cc: mpls-ops@mplsrc.com
> Subject: Re: Fwd: FW: How to Differentiate Traffic ?
> 
> Robert,
> 
> Let me clarify a little. This is for a service Providers network. Let
> me
> make some comments below:
> 
> > >
> > > 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.
> >
> 
> Chris>> Need cheap CPE devices. The above was just one example. DSL
> bridge
> through a DSLAM using a Bridge Group at the PE with DHCP for IP
> Addressing
> so that telecommuters for an enterprise can get the same IP address
> wherther
> they are at work or at home or a SOHO office. IE: The DHCP server for
> that
> particular user is the actual enterprises Server
> 
> > > 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.
> 
> Chris>> Does not seem practical. Are you saying put a LINUX WS at each
> site?
> That eliminates the cost advantage of using Ethernet then doesn't it??
> Also
> in the VLAN scenario would that not mean the clients Internet traffic
> could
> route back to the VPN path? (Note: If the client did nothing about it
> and
> was outsourcing the service to us the SP)
> 
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