[trill] Genart telechat review of draft-ietf-trill-smart-endnodes-08

Robert Sparks <rjsparks@nostrum.com> Tue, 27 February 2018 20:24 UTC

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Subject: [trill] Genart telechat review of draft-ietf-trill-smart-endnodes-08
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Reviewer: Robert Sparks
Review result: Ready with Issues

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Document: draft-ietf-trill-smart-endnodes-08
Reviewer: Robert Sparks
Review Date: 2018-02-27
IETF LC End Date: 2018-03-06
IESG Telechat date: 2018-03-08

Summary: Ready with issues

Major issues

1) In section 4.3 the bullet describing the F bit does not parse. There are two
instances of "Otherwise" that do not work together.

2) All of section 4.3 is confusing as to what the length of the TLV really is.
Row 3 in the diagram says 2 bytes or 4 bytes, but the number of bits called out
in bullets 4 and 5 below it don't seem to add up to those things. Maybe it would
be better to draw a diagram with F=0 and a separate diagram with F=1

3) I think the security considerations section should call out again what an RB
should do if it gets message that looks like it's from a SE, containing the
right nickname, but the RB hasn't done the right Smart-Hello handshaking with
that SE already. What would keep a lazy implementation (or one driven by
product managers picking and choosing features) from just forwarding a message
from a malicious element that just happened to know the RB's nickname?

Nits

Terminology: The definition of Transit RBridge says it's also named as a
Transit Rbridge?