I have reviewed this document as part of the Operational directorate's
ongoing effort to review all IETF documents being processed by the IESG.
These comments were written primarily for the benefit of the
operational area directors. Document editors and WG chairs should treat
these comments just like any other last call comments.
Summary: this document is almost ready to publish as an Informational
document with a minor issue and editorial suggestions.
Minor issue: Section 2 identifies vulnerability to DoS attacks as a gap,
but there is no follow-up in the rest of the document.
Editorial: in the middle paragraph of Section 1, change "require" to
"allow".
OLD
Moving the routing protocols to a stronger
algorithm while using weaker algorithm for BFD would require the
attacker to bring down BFD in order to bring down the routing
protocol.
NEW
Moving the routing protocols to a stronger
algorithm while using weaker algorithm for BFD would *allow* the
attacker to bring down BFD in order to bring down the routing
protocol.
Editorial: I have trouble parsing the first sentence of the fourth
paragraph of Section 3. It currently reads:
Note that when using authentication mechanisms, BFD requests the
sequence of a received BFD packets drops with a limited range (3*
Detection time multiplier).
Do you mean to say that BFD requests retransmission of BFD packets that
were received but dropped, and whose sequence numbers lie in a limited
range (3* Detection time multiplier)?
Editorial: same paragraph, next sentence, drop the "of":
OLD
(3 times of the detect interval of the session)
NEW
(3 times the detect interval of the session)
Editorial: next paragraph, third sentence:
OLD
If a node will randomly select a new discriminator
for a new session and use authentication mechanism to secure the
control packets, inter-session replay attacks can be mitigated to
some extent.
NEW
If a node randomly selects a new discriminator
for a new session and uses an authentication mechanism to secure the
control packets, inter-session replay attacks can be mitigated to
some extent.
Editorial: same paragraph, fourth line from bottom: s/reasons/reason/
Editorial: Section 4, third paragraph: s/elaborately/carefully/
Editorial: Section 6, second paragraph: s/relative effective/relatively
effective/
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