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5. VPN BGP/MPLS IPv6 inter-AS
Customer sites for BGP/MPLS VPN solutions in the same virtual private network may not all be covered by the same network operator, meaning in particular that the VPN is supported by different stand-alone systems. In this case, the exchange of VPN routes between two PEs from different routing domains cannot take place via MP-iBGP. To offer end-to-end VPN solutions, the two networks interconnect via gateways called ASBRs, using one or more of the inter-domain methods listed in this section.
5.1 Option "a
Option a is also known as VRF-to-VRF or back-to-back.
In option a, AS1's ASBR1 router is directly connected to AS2's ASBR2, via several sub-interfaces, at least one per VPN requiring inter-domain extension.
Each...
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VPN BGP/MPLS IPv6 inter-AS
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Bibliography
Also in our database
Standards and norms
- Multiprotocol Label Switching Architecture, ROSAN (E.) et al., IETF RFC 3031 - RFC 3031 - 2001
- BGP/MPLS IP Virtual Private Networks (VPNs), ROSEN (E.), REKHTER (Y.), IETF RFC 4364 - RFC 4364 - 2006
- Softwire Problem Statement, DURAND (A.) et al., IETF RFC 4925 - RFC 4925 - 2007
- BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN, De CLERCQ (J.) et al., IETF RFC 4659 - RFC 4659 - 2006 ...
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