[bess] Eric Rescorla's Discuss on draft-ietf-bess-evpn-etree-13: (with DISCUSS and COMMENT)

Eric Rescorla <ekr@rtfm.com> Sat, 09 September 2017 18:35 UTC

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From: Eric Rescorla <ekr@rtfm.com>
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Date: Sat, 09 Sep 2017 11:35:50 -0700
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Subject: [bess] Eric Rescorla's Discuss on draft-ietf-bess-evpn-etree-13: (with DISCUSS and COMMENT)
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Eric Rescorla has entered the following ballot position for
draft-ietf-bess-evpn-etree-13: Discuss

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DISCUSS:
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It's not clear to me if the prohibition on leaf-to-leaf communications is
intended to be a security requirement. If so, it seems like it needs to
explicitly state why it is not possible for ACs which are leaf to pretend to be
root. If not, then it should say so. Additionally, this solution appears to
rely very heavily on filtering, so I believe some text about what happens
during periods of filtering inconsistency (and what the impact on the security
is).


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COMMENT:
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4.2 Broadcast, Unkonwn, and Multicast (BUM) Traffic
Nit: unknown