Hi Dominik,
Sorry for the delay.
On Sep 30, 2009, at 11:07 , Dominik Kaspar wrote:
Hi Zach,
The ND documents states this definition:
LoWPAN Router
A LoWPAN node that forwards datagrams between arbitrary source-
destination pairs using a single 6LoWPAN interface performing IP
routing on that interface.
Is it important to emphasize the use of "a single interface"? I'm
curious why this was specified here (or why it was not added to the
analogous definition of a LoWPAN Mesh Node)
There was a thread on 6lowpan a while back about this. In normal IP
routers, forwarding is performed between interfaces. With a LoWPAN, we
are almost always forwarding on the same interface. Thus the
definition is explicit.
Are there LoWPAN nodes with more than one interface? If yes, can it be
ruled out that they are routers? If no, shouldn't the number of
interfaces be left open
I think it should be possible to have a LoWPAN Router with multiple
interfaces. Those interfaces would obviously be on different channels,
and the routing table and protocol would need to support multiple
interfaces. Has anybody been using multiple interfaces on a LoWPAN
Router, any problems or ramifications?
Zach
Dominik
On Tue, Sep 22, 2009 at 5:21 AM, Zach Shelby <[email protected]>
wrote:
A new version of 6lowpan-nd is now available. I fixed a few bugs that
Carsten found and improved the terminology with Joakim's feedback.
Still
shooting at nd-07 before the Hiroshima cutoff, so keep the comments
coming.
http://www.ietf.org/id/draft-ietf-6lowpan-nd-06.txt
Changes from -05 to -06:
o Fixed the Prf codes (#52).
o Corrected the OIIO TID field to 8-bits. Changed the Nonce/OII
order in both the OIIO and the NR/NC. (#53)
o Corrected an error in Table 1 (#54).
o Fixed asymmetric and a misplaced transient in the 6lowpan
terminology section.
o Added Updates RFC4861 to header
Zach
-------- Original Message --------
Subject: New Version Notification for draft-ietf-6lowpan-nd-06
Date: Mon, 21 Sep 2009 14:15:52 -0700 (PDT)
From: IETF I-D Submission Tool <[email protected]>
To: [email protected]
CC:
[email protected],[email protected],[email protected],[email protected]
,[email protected]
A new version of I-D, draft-ietf-6lowpan-nd-06.txt has been
successfuly
submitted by Zach Shelby and posted to the IETF repository.
Filename: draft-ietf-6lowpan-nd
Revision: 06
Title: 6LoWPAN Neighbor Discovery
Creation_date: 2009-09-22
WG ID: 6lowpan
Number_of_pages: 61
Abstract:
This document specifies Neighbor Discovery optimized for 6LoWPAN.
The 6LoWPAN format allows IPv6 to be used over energy and bandwidth
constrained wireless networks often making use of multihop
topologies. However, the use of standard IPv6 Neighbor Discovery
with 6LoWPAN has several problems. Standard Neighbor Discovery was
not designed for non-transitive wireless links, and the standard IPv6
link concept and heavy use of multicast makes it unpractical. This
document specifies a new ND mechanism allowing for the efficient
detection of duplicate addresses over entire LoWPANs, which also
optimizes other ND operations. In addition, context dissemination,
claim and defend address generation, and the support of Extended
LoWPANs over Backbone Links are specified.
The IETF Secretariat.
--
http://www.sensinode.com
http://zachshelby.org - My blog “On the Internet of Things”
Mobile: +358 40 7796297
Zach Shelby
Head of Research
Sensinode Ltd.
Kidekuja 2
88610 Vuokatti, FINLAND
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--
http://www.sensinode.com
http://zachshelby.org - My blog “On the Internet of Things”
Mobile: +358 40 7796297
Zach Shelby
Head of Research
Sensinode Ltd.
Kidekuja 2
88610 Vuokatti, FINLAND
This e-mail and all attached material are confidential and may contain
legally privileged information. If you are not the intended recipient,
please contact the sender and delete the e-mail from your system
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