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VXLAN DCI Using EVPN

VXLAN DCI Using EVPN draft-boutros-l2vpn-vxlan-evpn-04.txt Sami Boutros Ali Sajassi Samer Salam Dennis Cai Samir Thoria Tapraj Singh John Drake Jeff Tantsura IETF 91, Nov 2014 Honolulu, HI, USA. VXLAN DCI Using EVPN.

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VXLAN DCI Using EVPN

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  1. VXLAN DCI Using EVPNdraft-boutros-l2vpn-vxlan-evpn-04.txtSami Boutros Ali SajassiSamer SalamDennis CaiSamirThoriaTapraj Singh John Drake Jeff TantsuraIETF 91, Nov 2014Honolulu, HI, USA

  2. VXLAN DCI Using EVPN • This is to provide intra-subnet connectivity at Layer 2 and control-plane separation among the interconnected VXLAN or NVGRE networks over the EVPN MPLS/IP network. • The scope is limited to data plane learning in this document.

  3. Requirements • Control Plane Separation among VXLAN/NVGRE Networks. • Layer 2 Extension over the MPLS/IP Network for intra-subnet connectivity. • Support for IRB for both inter-subnet routing and intra-subnet bridging for a given VNI/VSID.

  4. Solution overview +-----------------+ | | +-----------+ +-----+ MPLS +------+ +----------+ +--------+ | |---|PE1 | |PE3 |--| | +---------+ |VTEP1|--| | +------+ +------+ | |--|VTEP3| +--------+ | VXLAN | +------+ +------+ | VXLAN| +--------+ +--------+ | |---|PE2 | |PE4 |--| | +--------+ |VTEP2|--| | +------+Backbone+------+ | |--|VTEP4| +--------+ +-----------+ +--------------+ +---------+ +--------+ |<------ IGP ------------->|<-----BGP-------------->|<------ IGP ---------->| CP |<----- VXLAN --------->|<EVPN/PBB-EVPN>|<------ VXLAN ------->| DP |<----MPLS----->| Legend: CP = Control Plane View DP = Data Plane View

  5. EVPN Routes • BGP MAC/B-MAC Advertisement Route for EVPN/PBB-EVPN • Ethernet Auto-Discovery Route for EVPN • Per VPN Route Targets • Inclusive Multicast Route to distribute the VNI information over the MPLS network. • Discovery of the PEs participating in a given VNI. • Stitching of the IP multicast trees, local to each VXLAN site, with the Label Switched Multicast (LSM) trees of the MPLS network.

  6. Handling Unicast traffic • Host MAC addresses will be learnt in data plane from the VXLAN network. • Host MAC addresses will be learnt over the MPLS/IP core:- • In control plane for EVPN. • In data plane [in case of PBB-EVPN]. • L2 Unicast traffic destined to the VXLAN network will be encapsulated with the IP/UDP header+Customer bridge VNI. • L2 Unicast traffic destined to the MPLS/IP network will be encapsulated with the MPLS label.

  7. Handling Mcast traffic • Each VXLAN network independently builds its P2MP or MP2MP shared multicast trees for one or more VNIs. • In the MPLS/IP network, multiple options are available for the delivery of multicast traffic: • Ingress replication • LSM Options. • The stitching must ensure for MH VXLAN network: • No Packet Duplication • No Forwarding Loops • Multicast Stitching with Per-VNI Load Balancing

  8. Changes From 02 04 • Added Use Cases • Homogeneous Network DCI interconnect • VNI Base Mode EVPN Service Use Case. • VNI Bundle Service Use Case Scenario • VNI Translation Use Case. • Heterogeneous Network DCI. • VXLAN VLAN Interworking Over EVPN

  9. Next steps • Authors believe that document is ready for WG adoption. Thank you

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