1. 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

2. 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

3. 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

4. EVPN Basic Applicability For Layer-2 Services
ARP
MAC IP Type
M Evpn
M Evpn
DCGW
FDB
MAC VTEP:VNI Type
M :1 Evpn
M :1 Evpn
Flood list
Dest VTEP VNI
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

5. 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.
/24
GW-IP=0
Router’s MAC 00:AA
Subnet
/24
Subnet
/24
NVE
NVE
MAC 00:AA
MPLS/NVO3
NETWORK
MAC 00:BB
IP-VRF
MAC-VRF
MAC-VRF
IP-VRF
IRB
MAC 00:CC
/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

6. 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

7. 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

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

9. Thank you