[bess] A doubt about draft-sajassi-bess-evpn-ip-aliasing-05

Alexander Vainshtein <Alexander.Vainshtein@rbbn.com> Thu, 17 November 2022 10:25 UTC

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From: Alexander Vainshtein <Alexander.Vainshtein@rbbn.com>
To: "draft-sajassi-bess-evpn-ip-aliasing@ietf.org" <draft-sajassi-bess-evpn-ip-aliasing@ietf.org>
CC: Luc André Burdet <laburdet.ietf@gmail.com>, "bess@ietf.org" <bess@ietf.org>, Nitsan Dolev <Nitsan.Dolev@rbbn.com>, Alexander Ferdman <Alexander.Ferdman@rbbn.com>, Ron Sdayoor <Ron.Sdayoor@rbbn.com>, Dmitry Valdman <Dmitry.Valdman@rbbn.com>
Thread-Topic: A doubt about draft-sajassi-bess-evpn-ip-aliasing-05
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Subject: [bess] A doubt about draft-sajassi-bess-evpn-ip-aliasing-05
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Hi,
I have doubts regarding applicability of the solution for L3 fast convergence defined in draft-sajassi-bess-evpn-ip-aliasing-05<https://datatracker.ietf.org/doc/html/draft-sajassi-bess-evpn-ip-aliasing-05> for the scenarios in which the MH ES in question operates in Single Flow-Active load-balancing mode as described in draft-ietf-bess-evpn-l2gw-proto-02<https://datatracker.ietf.org/doc/html/draft-ietf-bess-evpn-l2gw-proto-02>.

These doubts are based on the fact that, in Single Flow-Active load-balancing mode, the Primary PE is defined by the Layer 2 Control Protocol (or its equivalent) for each specific host, while the EVPN IP Aliasing draft advertises Primary/Backup paths via P/B bits in the EVPN Layer 2 Extended Community attached to the IP A-D EVPN routes.

What, if anything, did I miss?

Your feedback would be highly appreciated.

Regards, and lots of thanks in advance,
Sasha


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