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Interesting BFD discussion on reddit
- Subject: Interesting BFD discussion on reddit
- From: saku at ytti.fi (Saku Ytti)
- Date: Tue, 17 Feb 2015 09:36:06 +0200
- In-reply-to: <[email protected]>
- References: <CAARSoVzjf9n_2sYmuOMVRzx=Q7kAWXjgyGRC2PmkgwU-Nt_B=w@mail.gmail.com> <[email protected]>
On (2015-02-16 20:33 -0500), Rob Seastrom wrote:
Hey,
> One might profitably ask why BFD wasn't designed to take advantage of
> high-TTL-shadowing, a la draft-gill-btsh.
RFC5881, section 5 in page 4
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If BFD authentication is not in use on a session, all BFD Control
packets for the session MUST be sent with a Time to Live (TTL) or Hop
Limit value of 255. All received BFD Control packets that are
demultiplexed to the session MUST be discarded if the received TTL or
Hop Limit is not equal to 255. A discussion of this mechanism can be
found in [GTSM].
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++ytti