L3VPN iBGP PE-CE (RFC6368) :
This setup is used for our Internet in a vrf setup as some of network functions needs IBGP setup like CGNAT.
- 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.
Local-AS for iBGP & Allow-Policy :
