Re: [Roll] Path Control Bits handling issue in 6550
"Pascal Thubert (pthubert)" <pthubert@cisco.com> Mon, 14 September 2020 16:30 UTC
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] Path Control Bits handling issue in 6550
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Date: Mon, 14 Sep 2020 16:30:02 +0000
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Subject: Re: [Roll] Path Control Bits handling issue in 6550
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Hello Michael This is a late addition (that we owe to Roger Alexander) to control the fan out of the DAO when the reverse subDAG (the DODAG that contains all the paths from this node to the root in the main DODAG) grows fat, each node copying multiple parents. This addition controls the number of copies that can be made, total. It’s cool and not rocket science but useless in an implementation that only builds trees of preferred parents – and missed the point of RPL which is to build and route over DODAGs, not trees. Take care, Pascal From: Roll <roll-bounces@ietf.org> On Behalf Of Rahul Jadhav Sent: lundi 14 septembre 2020 17:59 To: Routing Over Low power and Lossy networks <roll@ietf.org> Subject: Re: [Roll] Path Control Bits handling issue in 6550 > Yes, I believe that the points in observations need to be addressed. > I started this for the Path Control Bits handling issue in 6550. can you explain what you mean bby Path Control Bits? Is "T" one of those bits? https://tools.ietf.org/html/rfc6550#section-9.9 explains Path Control. The DIO(Config Option) in the control plane carries PCS bits... Also the DAO(TIO) carries Path control related information. The strange part is very few really understand Path Control ... No open source implements it. But it occupies a good amount of real estate in 6550. -- Michael Richardson <mcr+IETF@sandelman.ca<mailto:mcr%2BIETF@sandelman.ca>> . o O ( IPv6 IøT consulting ) Sandelman Software Works Inc, Ottawa and Worldwide _______________________________________________ Roll mailing list Roll@ietf.org<mailto:Roll@ietf.org> https://www.ietf.org/mailman/listinfo/roll
- [Roll] Path Control Bits handling issue in 6550 Pascal Thubert (pthubert)
- Re: [Roll] Path Control Bits handling issue in 65… Michael Richardson
- Re: [Roll] Path Control Bits handling issue in 65… Rahul Jadhav
- Re: [Roll] Path Control Bits handling issue in 65… Pascal Thubert (pthubert)
- Re: [Roll] Path Control Bits handling issue in 65… Michael Richardson