I am the assigned Gen-ART reviewer for this draft. For background on
Gen-ART, please see the FAQ at
<http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>.
Please resolve these comments along with any other Last Call comments
you may receive.
Document: draft-ietf-dhc-triggered-reconfigure-05
Reviewer: Robert Sparks
Review Date: April 26, 2013
IETF LC End Date: May 6, 2013
IESG Telechat date: May 16, 2013
Summary: This draft is on the right track but has open issues, described in
the review.
Major issues:
Overall, this document is solid, but I think there is a bug in section 6.3.
I could be wrong, but If I'm right, this paragraph:
When retransmission is required, the relay may decide to correct the
content of RECONFIGURE-REQUEST message it issues (e.g., update the
Client Identifier list). This decision is local to the relay (e.g.,
it may be based on observed events such as one or more clients were
reconfigured on their own).
introduces a race-condition that could lead to an erroneous state. If a
relay's first message included client A, then the retransmission
included clients A and B, but that retransmission crosses with a success
RECONFIGURE-REPLY to the request that only included client A, the relay
will think it succeeded in asking A and B to be reconfigured.
Minor issues:
This sentence:
Furthermore, means to recover state in failure events must be
supported, but are not discussed in this document.
places a requirement on a relay (even though it's not using a 2119
MUST). Is there some other document that defines this requirement that
you can reference? If not, the requirement should be discussed in this
document. Alternatively, you could change the sentence to talk about the
consequences of not having a proprietary means for recovering state.
Nits/editorial comments: