[bess] Comparing using the SD-WAN Overlay SAFI specified by draft-dunbar-idr-bgp-sdwan-overlay-ext with the EVPN approach described by draft-sajassi-bess-secure-evpn-00

[Linda Dunbar <[e-mail]>]

IDR group, BESS group,

https://datatracker.ietf.org/doc/draft-dunbar-idr-bgp-sdwan-overlay-ext/ specifies a new BGP SAFI (=74) in order to advertise a SD-WAN edge node's capabilities in establishing SD-WAN overlay tunnels with other SD-WAN nodes through third party untrusted networks.

draft-sajassi-bess-secure-evpn-00 describes an EVPN solution for PE nodes to exchange key and policy to create private pair-wise IPsec Security Associations without IKEv2 point-to-point signaling or any other direct peer-to-peer session establishment messages.

I think those two solutions are not conflicting with each other. Actually they are compliment to each other to some degree. For example,

-        the Re-key mechanism described by draft-sajassi-bess-secure-evpn-00 can be utilized by draft-dunbar-idr-bgp-sdwan-overlay-ext

-        The SD-WAN Overlay SAFI can be useful to simplify the process on RR to re-distribute the Tunnel End properties to authorized peers.

-        When SD-WAN edge nodes use private address, or no IP address, NAT properties for the end points distribution described draft-dunbar-idr-bgp-sdwan-overlay-ext is necessary.

-        The secure channel between SD-WAN edge nodes and RR described by draft-dunbar-idr-bgp-sdwan-overlay-ext is necessary.

Any thoughts?

Thank you very much.

Linda Dunbar