L3VPN iBGP PE-CE

iBGP :

L3VPN iBGP PE-CE (RFC6368) :

  • Customer iBGP attributes are retained across the VPN.
  • No insertion of ISP BGP AS number in the AS_PATH.

The PE will place the received iBGP attributes in a new attribute ATTR_SET and transport them over the ISP backbone.

Note : Requires unique RDs per PE.

L3VPN iBGP PE-CE
L3VPN iBGP PE-CE

Local-AS for iBGP & Allow-Policy :

Local-AS for iBGP & Allow-Policy

IOS Implementation of the iBGP PE-CE Feature