Skip to main content

Early Review of draft-ietf-manet-dlep-radio-band-01
review-ietf-manet-dlep-radio-band-01-rtgdir-early-white-2025-05-03-00

Request Review of draft-ietf-manet-dlep-radio-band
Requested revision No specific revision (document currently at 04)
Type Early Review
Team Routing Area Directorate (rtgdir)
Deadline 2025-05-01
Requested 2025-04-09
Requested by Donald E. Eastlake 3rd
Authors Henning Rogge
I-D last updated 2026-03-17 (Latest revision 2026-03-17)
Completed reviews Rtgdir Early review of -01 by Russ White (diff)
Assignment Reviewer Russ White
State Completed
Request Early review on draft-ietf-manet-dlep-radio-band by Routing Area Directorate Assigned
Posted at https://mailarchive.ietf.org/arch/msg/rtg-dir/MDzKMAIwwT3I3ex7a0a-b15Nv_Q
Reviewed revision 01 (document currently at 04)
Result Has nits
Completed 2025-05-03
review-ietf-manet-dlep-radio-band-01-rtgdir-early-white-2025-05-03-00
==
nit --

The Item can be used in a neighbor specific message if the radio use
   dedicated subcarriers to talk to neighbors.

use/uses

==
nit --

Frequency selection is often controlled by the radios configuration.

radios/radio's

==
question --

This might not apply here, but should it be possible to extend the signaling
here to things like spread spectrum channels?

==
question --

   Request Link Characteristics message) be used to change the frequency
   of the radio in a standardized way.

This would seem to inlude frequency hopping support (?). Would there be any
timing limits on how often a radio could swap channels (there may be timing
limits later in the doc I've not hit yet)?

==
nit --

The format of the Radio Band Data Item is:

   0                   1                   2                   3
   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   | Data Item Type                | Length                        |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                       Carrier Frequency                       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                       Carrier Frequency                       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Bandwidth                           |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Bandwidth                           |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Flags     |
   +-+-+-+-+-+-+-+-+

I find this format a little confusing, as it could indicate two different
carrier frequency fields (?): I think a possibly easier to understand format
might be something like:

The format of the Radio Band Data Item is:

   0                   1                   2                   3
   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   | Data Item Type                | Length                        |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                       Carrier Frequency                       |
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Bandwidth                           |
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Flags     |
   +-+-+-+-+-+-+-+-+

==
question --

The length of the Radio Bnd Data Item is set to 17. If this won't ever change
(and the packet format seem to be set up to support fixed length values), does
the length need to be included? Could the Flags field be moved to where the
length is?