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Data Center Interconnect Solution for EVPN Overlay networks

Data Center Interconnect Solution for EVPN Overlay networks. draft-rabadan-l2vpn -dci-evpn-overlay-01 Jorge Rabadan Senthil Sathappan Wim Henderickx Florin Balus Senad Palislamovic. IETF 89, March 2014 London, UK. The issue we want to address…. DATA CENTER INTERCONNECT

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Data Center Interconnect Solution for EVPN Overlay networks

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  1. Data Center Interconnect Solution for EVPN Overlay networks draft-rabadan-l2vpn-dci-evpn-overlay-01 Jorge Rabadan SenthilSathappan WimHenderickx Florin Balus SenadPalislamovic • IETF 89, March 2014 • London, UK

  2. The issue we want to address… DATA CENTER INTERCONNECT FOR LAYER-2 EXTENSION DGW-1 EVI EVI WAN PEs DGW-2 HYPERVISOR HYPERVISOR HYPERVISOR EXISTING OR NEW WAN TECHNOLOGIES DIFFERENT OR SAME ADMIN DOMAINS (DC AND WAN) WAN VPLS PBB-VPLS DECOUPLED MODEL EVPN-OVERLAYS EVPN PBB-EVPN INTEGRATED MODEL

  3. IP IP MAC MAC MPLS VXLAN IP IP MAC DECOUPLED MODEL INTEGRATED MODEL Interconnect requirements (Dec-M) PW or VLAN hand-off (PBB-)VPLS (PBB-)EVPN BGP EVPN for Overlay tunnels WAN Edge DGW-1 EVI EVI EVI EVI EVI HYPERVISOR HYPERVISOR HYPERVISOR DGW-2 • Optimizations on the DC GW: • Unknown-flooding reduction • Control of the MAC advertisements to the DC • ARP-flooding control MAC IP WAN • Clear and simple demarcation (QoS/ACL enforcement, OAM) • Minimum or no control plane interaction between DGWs and WAN PEs • Multi-homing required VID MAC

  4. IP MAC VXLAN IP IP MAC INTEGRATED MODEL DECOUPLED MODEL Interconnect requirements (Int-M) BGP EVPN for Overlay tunnels (PBB-)VPLS DGW-1 EVI EVI EVI EVI VSI (PBB-)EVPN EVI HYPERVISOR HYPERVISOR HYPERVISOR DGW-2 MAC • Independent inclusive multicast trees in WAN and DC • If EVPN in the WAN the following end-to-end features: • MAC mobility, protection • Proxy-ARP WAN IP/MPLS • Data Plane AND Control plane gateway function on DGWs • Multi-homing required: • Per-service load balancing • Per-flow load balancing - only (PBB-)EVPN WAN IP/MPLS

  5. DGW Control Plane EVPN extensions proposed to address the e2e EVPN model • evpn RT=2 • evpn RT=2 • evpn RT=2 • evpn RT=2 RD-DGW1 RD-DGW4 RD-DGW3 RD-NVE1 1 1 2 3 2 2 EVI EVI EVI EVI EVI EVI EVI EVI FW-1 VXLAN VXLAN MPLS VXLAN DGW-3 (non-DF) DGW-1 (DF) NVE3 NVE1 ESI=DC1 ESI=DC2 ESI=DC2 ESI=TS1 ESI=DC1 P2MP LSPs • ESI=DC1 AA:AA AA:AA AA:AA AA:AA AA:AA • ESI=TS1 TS2 ESI=DC2 TS1 • ESI=TS2 VNI1 VNI1 Label-x VNI1 Label-y AA:AA BB:BB • evpn RT=2 Ingress replication RD-DGW2 NVE4 NVE2 DGW-4 (DF) DGW-2 (non-DF) Definition of a ‘DCI-ESI’ used to advertise MACs learnt from EVPN to EVPN and allow e2e per-flow load-balancingand aliasing (and backup-path) FW-2 MPLS MAC mobility only propagated for mac-moves between DCs Independent inclusive mcast trees in each domain

  6. DGW Data Plane EVPN extensions for B/U/M traffic in e2e all-active EVPN: no need for ESI label EVPN-MPLS EVPN for Overlay tunnels EVPN for Overlay tunnels FW-1 FW-1 DGW-3 (non-DF) DGW-1 (DF) 1 2 4 3 NVE3 NVE1 EVI EVI EVI EVI EVI EVI EVI EVI • ESI=TS1 TS2 TS1 • ESI=TS2 • ESI=DC1 • ESI=DC2 AA:AA BB:BB NVE4 NVE2 DGW-4 (DF) DGW-2 (non-DF) FW-2 FW-2 (1) (4) No change in the EVPN procedures for split-horizon at the NVEs (3) Non-DF will ONLY forward to local ACs DF will never forward to WAN SHG or non-DF (2) Non-DF will ONLY forward to local ACs DF will never forward to DC SHG or non-DF

  7. NEXT STEPS • More feedback from WG

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