Subject: [bess] Router's MAC Extended Community in draft-ietf-bess-evpn-inter-subnet-forwarding

From: John Scudder <[email-masked]>
Date: Thu, 10 Sep 2020 13:27:32 +0000

Hi Authors,

I just went through draft-ietf-bess-evpn-inter-subnet-forwarding to look for answers to two questions:

1. Can a router advertise multiple different Router’s MAC values? If yes, what is the receiver supposed to do?
2. Assuming the answer to question 1 is “no”, what is the receiver supposed to do if it receives multiple Router’s MAC Extended Communities (with different values) anyway, for example due to a bug or configuration error? This is a very real possibility since many BGP implementations allow policy to produce arbitrary communities.

Thanks,

—John