ASBR VRF Context for BGP/MPLS IP VPN IETF-65

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ASBR VRF Context for BGP/MPLS IP VPNIETF-65

• draft-kulmala-l3vpn-interas-option-d-02.txt

Marko Kulmala Ville Hallivuori Martin
Halstead Jyrki Soini Jim Guichard
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Draft Overview and History
ABSTRACT This option combines per VPN VRFs at the
Autonomous System Border Router (ASBR) as
described in 'Option A' with the redistribution
of labeled VPN-IPv4 routes as described in
'Option B'. In addition, this option allows for a
data plane consisting of two methods of traffic
forwarding between attached ASBR pairs.

• Combination of Multi-AS options a and b,
  targeted at Multi-AS MPLS IP VPN (RFC 4364)
  service extensions.
• MP-eBGP peering between ASBRs
• ASBR has a minimum of a VRF per VPN
• Hierarchical per-VPN admission control at the AS
  border
• Allows VPN topology hiding, traffic load
  balancing, path optimization, route
  summarization, route capping etc.
• Trust model of Option B remained specifically
  MPLS based data plane addressed in this draft
• Added new authors

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Operation Shared Interface Forwarding
MP-eBGP peer plus global labeled interface
AS 1
AS 2
CE1
CE2
VRF1 _at_ PE1
VRF4_at_ PE2
VRF3 _at_ ASBR2
VRF 2 _at_ ASBR1
VPN Membership Domain
VPN Membership Domain
VPN Membership Domain
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Operation Private Interface Forwarding
MP-eBGP peer
AS 1
AS 2
Back-to-back VRF Attachment Circuit
CE1
CE2
VRF1 _at_ PE1
VRF4_at_ PE2
VRF3 _at_ ASBR2
VRF 2 _at_ ASBR1
VPN Membership Domain
VPN Membership Domain
VPN Membership Domain
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What is covered in this Draft?
draft-kulmala-l3vpn-interas-option-d-02.txt

• Updated the following sections
• Reference Model
• Operation section
• Deployment Considerations
• Comparison of current RFC 4364 Multi-AS options
• Security section

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Next steps
draft-kulmala-l3vpn-interas-option-d-02.txt

• More discussion on the list particularity from
  Service Providers wanting to partner at Layer 3
• Adopt the ID as a WG Document