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IP Prefix Advertisement in EVPN

IP Prefix Advertisement in EVPN. draft-rabadan-l2vpn-evpn-prefix-advertisement- 01 Jorge Rabadan Wim Hendericks Florin Balus Senad Palislamovic Aldrin Isaac. IETF 88, November 2013 Vancouver, Canada. The prefix-advertisement route (route-type 5).

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IP Prefix Advertisement in EVPN

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  1. IP Prefix Advertisement in EVPN draft-rabadan-l2vpn-evpn-prefix-advertisement-01 Jorge Rabadan WimHendericks Florin Balus SenadPalislamovic Aldrin Isaac • IETF 88, November 2013 • Vancouver, Canada

  2. The prefix-advertisement route (route-type 5) • RT 2 (MAC-advertisement) used for advertising MACs and MAC-IP for ARP resolution) • Also used for MAC Mobility • RT 5 (IP-prefix) used to advertise Prefixes independently of the mac-advertisement routes • Possible Prefix next-hops in the overlay topology • ESI, IRB IP address, Floating IP address • Route-types: • 1- Ethernet A-D route • 2- MAC-advertisement route • 3- Inclusive Multicast route • 4- Ethernet Segment route • 5- IP Prefix route (OPTIONAL) Route-type 5 specific content

  3. Use-case #1: TS IP address next-hop use-case VM TS2 (VA) NVE2 DGW-1 FW-2 IP2/M2 IRB1 SN1 VXLAN/NVGRE WAN IP3/M3 FW-3 VNI=1 ESI=0 IRB2 VNI=1 SN1 /24 TS3 (VA) NVE3 GW IP=IP3 M3 / IP3 DGW-2 • evpn RT=2 ESI=0 EVI-10 EVI-10 EVI-10 EVI-10 VRF VRF • evpn RT=5

  4. Use-case #2: floating IP address use-case ESI=0 • evpn RT=5 • evpn RT=2 TS2 (VA) (ACTIVE) VM NVE2 DGW-1 FW-2 IP2/M2 VNI=1 ESI=0 VNI=1 SN1 /24 VNI=1 SN1 /24 IRB1 SN1 GW IP=IP23 GW IP=IP23 M2 / IP23 vIP23 (floating) VXLAN/NVGRE WAN IP3/M3 FW-3 IRB2 TS3 (VA) NVE3 DGW-2 ESI=0 EVI-10 EVI-10 EVI-10 EVI-10 VRF VRF • evpn RT=5

  5. Use-case #3: IRB IP next-hop use-case ESI=0 • evpn RT=5 • evpn RT=2 VM NVE2 DGW-1 ESI=0 VNI=1 SN1 /24 VNI=1 IRB3 IRB1 GW IP=IRB3 M2 / IRB3 VXLAN/NVGRE WAN SN1 IRB4 IRB2 NVE3 DGW-2 EVI-10 EVI-10 EVI-10 EVI-2 EVI-2 EVI-10 VRF VRF VRF VRF

  6. Use-case #4: “bump-in-the-wire” use-case (new) ESI=23 • evpn RT=5 • evpn RT=1 VM VA NVE2 DGW-1 • (ACTIVE) FW FW VM VNI=10 ESI=23 VNI=10 VM1 SN1 /24 VNI=10 SN1 /24 IRB1 SN1 ESI23 GW IP=0 GW IP=0 VXLAN/NVGRE WAN VM VM2 FW-3 FW-3 IRB2 NVE3 VA DGW-2 ESI=23 EVI-10 EVI-10 EVI-10 EVI-10 VRF VRF • evpn RT=5

  7. The prefix-advertisement route benefits • Clean identification of a prefix • NVEs running EVPN but not supporting the OPTIONAL prefix-advertisement route can easily identify it an ignore it without processing the route • No MAC information is compared by BGP when selecting routes • Flexible overlay next-hop (IRB, floating IP, ESI) addressing different end-point types • Decouples prefix-advertisement from mac mobility procedures • Supports VA resiliency procedures

  8. Next steps • Feedback from WG

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