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Cell Relay Retreat>MPLS WG Archive>month:2001-Jan> msg00309



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Internet and VPN routes

  • From: Robert Raszuk <raszuk@cisco.com>
  • Date: Fri, 26 Jan 2001 14:26:13 -0800
  • CC: "mpls@uu.net" <mpls@UU.NET>, "erosen@cisco.com" <erosen@cisco.com>
  • Organization: Signature: http://www.employees.org/~raszuk/sig/


Today for dynamic advertisement of customer's internet routes + internal
vpn routes between CE-PE you have two EBGP sessions (one to the vrf +
one to the global table) or a combination of ebgp to the global table +
pe-ce igp to the vrf.

R.

> Radha PK wrote:
> 
> Hi,
> In the case of BGP/MPLS based layer 3 VPNs:
> 
> If the customer is provided both internet and VPN service, how will BGP in the provider differentiate between the IPV4 routes (global addresses for internet) and VPN routes learnt from the CE, so that the internet routes are added in the internet routing table?
> 
> Should RD be added at CE itself to differentiate routes for VPN and internet (RD zero)?
> 
> Pls suggest as to how this case is handled.
> 
> Thank u.
> 
> With Regards.
> Radha
> 
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