BGP L3VPN Virtual PE draft-fang-l3vpn-data-center-interconnect-01 L. Fang R. Fernando D. Rao S. Boutros IETF 88, Vancouver, Nov. 2013.

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Presentation transcript:

BGP L3VPN Virtual PE draft-fang-l3vpn-data-center-interconnect-01 L. Fang R. Fernando D. Rao S. Boutros IETF 88, Vancouver, Nov. 2013

Use Cases Case 1: End-to-end BGP IP VPN cloud inter-connection Case 2: Hybrid cloud inter-connection Strong requirements from multiple service providers for both cases

Update -No major text changes other than editing from 01 to 02 -Wim discussed potential mapping protocol extensions for inter-connect, Oscar, Ning interested to join the work -Next step, update the draft with new co-author additions -Asking for WG adoption when ready -The rest of the slides are overview, can be quickly summarized

Reference model 1 (a) End-to-end BGP IP VPN Cloud Inter-connection BGP/MPLS IP VPN Inter-Connection with ASBR in each network

Reference model 1 (b) End-to-end BGP IP VPN cloud inter-connection BGP/MPLS IP VPN Inter-Connection with shared ASBR(s)

Reference model 2 BGP/MPLS IP VPN Gateway PE connect to DC vCE Model BGP/MPLS IP VPN GW/PE connect to vCEs (no BGP/MPLS IP VPN in the DC)

Reference model 3 Hybrid inter-connection Model BGP/MPLS IP VPN GW/PE to vCEs (without BGP/MPLS IP VPN in the DC)

Inter-connect IP VPN between DC and WAN In addition to use RT-constrain [RFC 4648], routes summarization is needed between DC and WAN. OptionsDescriptionScaleSecurity Inter-AS Option Aback-to-back VRFLow (vrfs, ports, rts, bgp sessions) High (terminating) Inter-AS Option BBGP exchange VPN routes Mid Inter-AS Option CMultihop eBGP exchange VPN-IPv4 Routes, need IGP visibility HighLow (should not be used in inter-provider) Single ASOne IGP domainLowHigh (only apply to single operator own DC and net)

Inter-connect IP VPN and non-IP VPN overlay networks Connecting to DC with VXLAN or NVGRE Connection models: 1. VRF Termination The overlay based virtual network terminates into a BGP IP VPN VRF at the DC-WAN Gateway router. The DC gateway performs an IP lookup and MPLS or IP encap. Packet encapsulation with MPLS or IP. 2. DC-VN and IP VPN Inter-working DC Gateway router performs a direct translation between VN-IDs and IP VPN labels. No IP look-up performed The DC Gateway Router acts as an Inter-AS Option B ASBR peering with other ASBRs.