[dhcwg] Review Request (Fwd: I-D Action: draft-ietf-roll-mpl-parameter-configuration-00.txt)
Yusuke DOI <yusuke.doi@toshiba.co.jp> Fri, 14 March 2014 00:03 UTC
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Date: Fri, 14 Mar 2014 09:03:03 +0900
From: Yusuke DOI <yusuke.doi@toshiba.co.jp>
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Cc: Matthew.Gillmore@itron.com
Subject: [dhcwg] Review Request (Fwd: I-D Action: draft-ietf-roll-mpl-parameter-configuration-00.txt)
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Dear DHC folks, I'm proposing an DHCPv6 option for configuration of MPL parameters that are (typically) used in wireless mesh networks. The I-D is just adopted as roll WG draft. May I ask the dhc wg (again) to take a look on it? I need to apologize I failed to follow a Bernie's suggestion given at last August. http://www.ietf.org/mail-archive/web/dhcwg/current/msg14587.html > 2. While it may cost a few octets, I would strongly encourage you to > use separate fields for some items (such as C_K and DM_K). This will > cost you one octet but keeps the encoding simpler (flags, C_K, and > DM_K octets). I tried to follow the comment, and at the same time, I think it should be aligned with word boundary, *and*, it should be compact as possible because it's intended to be used in wireless mesh networks (I feel too nervous if I waste 24 bits of all of the DHCP responses on the all mesh networks of ours). This results following awkward format. I personally think it is even more simple to make some bitmasking (and we are get used to it) than the following optlen={17|33} format. Currently, the proposal is still in the previous format with some 5-bit field and a bit for a flag. [the format to have independent C_K/DM_K octet -- *not* included in the I-D] (if option_len = 17 ) 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | OPTION_MPL_PARAMETERS | option_len | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_IMIN | DM_IMAX | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_T_EXP | C_IMIN | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | C_IMAX | C_T_EXP | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | SE_LIFETIME | FLAGS | C_K | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_K | +-+-+-+-+-+-+-+-+ (if option_len = 33 ) 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | OPTION_MPL_PARAMETERS | option_len | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | MPL Domain Address (128bits) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (cont'ed) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (cont'ed) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (cont'ed) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_IMIN | DM_IMAX | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_T_EXP | C_IMIN | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | C_IMAX | C_T_EXP | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | SE_LIFETIME | FLAGS | C_K | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DM_K | +-+-+-+-+-+-+-+-+ Thanks, Yusuke -------- Original Message -------- Subject: I-D Action: draft-ietf-roll-mpl-parameter-configuration-00.txt Date: Thu, 13 Mar 2014 07:39:42 -0700 From: internet-drafts@ietf.org Reply-To: internet-drafts@ietf.org To: i-d-announce@ietf.org CC: roll@ietf.org A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Routing Over Low power and Lossy networks Working Group of the IETF. Title : MPL Parameter Configuration Option for DHCPv6 Authors : Yusuke Doi Matthew Gillmore Filename : draft-ietf-roll-mpl-parameter-configuration-00.txt Pages : 9 Date : 2014-03-13 Abstract: This draft defines a way to configure MPL parameter set via DHCPv6 option. MPL has a set of parameters to control its behavior, and the parameter set is often configured as a network-wide parameter because the parameter set should be identical for each MPL forwarder in an MPL domain. Using the MPL Parameter Configuration Option defined in this document, a network can be configured with a single set of MPL parameter easily. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-roll-mpl-parameter-configuration/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-roll-mpl-parameter-configuration-00 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt