Applicability of EVPN to NVO3 Networks draft-rabadan-nvo3-evpn-applicability-00 Jorge Rabadan (Nokia) Matthew Bocci (Nokia) Sami Boutros (VMware) IETF100, Nov 2017 Singapore

Introduction What it is and what it is not What it is: What it is not: Informational / Applicability document that intends to describe how to use EVPN as a control-plane protocol to address the requirements of NVO3 networks (at a high level) A Reference Guide that points at the right document in BESS for the implementation details What it is not: A Standards Track document A document that specifies a protocol or protocol extension The assumptions it makes: The NVEs exchange information via control-plane That control-plane is based on EVPN

Why is EVPN needed In NVO3 networks A control-plane is needed in NVO3 networks for: Auto-discovery of the remote NVEs that are attached to the same BD Dissemination of the MAC/IP host information (mapping tables on remote NVEs) Advanced features (MAC Mobility, MAC Protection, BUM traffic reduction/suppression, Multi-homing, etc.) Comparing ”Flood and Learn” and EVPN

EVPN Basic Applicability For Layer-2 Services ARP MAC IP Type M1 10.1 Evpn M2 10.2 Evpn DCGW FDB MAC VTEP:VNI Type M1 1.1:1 Evpn M2 2.2:1 Evpn Flood list Dest VTEP VNI 1.1 1 2.2 1 MAC-VRF EVPN provides the basic Control Plane needs… Auto-Provisioning of NVEs Auto-discovery of remote VTEPs through Inclusive Multicast Routes (IMET) Distribution of MAC/IP information in order to reduce/suppress flooding through MAC/IP routes MAC/IP (M2/10.2, VTEP2.2, VNI1) MAC/IP (M1/10.1, VTEP1.1, VNI1) IMET (VTEP2.2, VNI1) IMET (VTEP1.1, VNI1) NVE (Leaf) Reference documents RFC7432 draft-ietf-bess-evpn-overlay NVEs (Leaf) MAC-VRF MAC-VRF VMs / BM servers 10.2/24 M2 10.1/24 M1

EVPN Basic Applicability For Layer-3 Services EVPN IP-Prefix route EVPN provides two basic models Asymmetric All NVEs are attached to all subnets At the egress NVE only MAC lookup is needed Symmetric NVEs are attached to only subnets with connected hosts Ingress/Egress NVE need (tenant) IP lookup. 10.10.10.0/24 GW-IP=0 Router’s MAC 00:AA Subnet 20.20.20.0/24 Subnet 10.10.10.0/24 NVE NVE MAC 00:AA MPLS/NVO3 NETWORK MAC 00:BB IP-VRF MAC-VRF MAC-VRF IP-VRF IRB MAC 00:CC 20.20.20.0/24 GW-IP=0 Router’s MAC 00:BB EVPN IP-Prefix route IP IP IP Reference documents draft-ietf-bess-evpn-prefix-advertisement draft-ietf-bess-evpn-inter-subnet-forwarding MAC MAC DA 00:CC MAC MAC IP VXLAN UDP MAC MAC DA 00:BB EVPN-VXLAN or EVPN-MPLS IP MPLS MAC MPLS MAC

Other Topics In NVO3 networks Reference documents Encaps Support for NVO3 encapsulations, in particular GENEVE OAM on NVO3 Reference documents Encaps draft-ietf-bess-evpn-overlay draft-ietf-nvo3-geneve draft-ietf-idr-tunnel-encaps Reference documents EVPN OAM draft-jain-bess-evpn-lsp-ping

Advanced EVPN features For NVO3 networks Reference documents - advanced EVPN RFC7432 draft-ietf-bess-evpn-proxy-arp-nd draft-snr-bess-evpn-loop-protect draft-ietf-bess-evpn-igmp-mld-proxy draft-skr- bess-evpn-pim-proxy-01 draft-ietf-bess-evpn-optimized-ir draft-ietf-bess-evpn-overlay draft-ietf-bess-evpn-df-election draft-ietf-bess-evpn-pref-df draft-ietf-bess-evpn-ac-df draft-lin-bess-evpn-irb-mcast draft-ietf-bess-dci-evpn-overlay draft-rabadan-sajassi-bess-evpn-ipvpn-interworking VM Mobility, MAC protection, Duplication Detection and Loop Protection Reduction / Suppression of BUM traffic in Broadcast Domains: Proxy-ARP/ND IGMP-MLD-PROXY IGMP-PROXY Ingress Replication Optimization for BUM traffic EVPN Multi-Homing Recursive Resolution for Inter-Subnet Forwarding Optimized Inter-Subnet Multicast Data Center Interconnect

Next steps The Authors would like to request feedback and discussion from the Working Group

Thank you