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Re: [Roll] DAO Projection

"Pascal Thubert (pthubert)" <pthubert@cisco.com> Wed, 08 March 2017 08:18 UTC

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>, "draft-ietf-roll-dao-projection@ietf.org" <draft-ietf-roll-dao-projection@ietf.org>
Thread-Topic: [Roll] DAO Projection
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Date: Wed, 08 Mar 2017 08:18:32 +0000
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Subject: Re: [Roll] DAO Projection
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Hello Rahul :

Thanks for your comments, all spot on : )

Please see below

Installing routes by DAO projection in NS-MOP will help in establishing optimized P2P paths, as well as it will help in containing the 6lo fragmentation resulting out of bulged SRH at 6LBR.
Thanks for the work.

There are few observations/Qs:

1. The draft discusses about projecting DAO for route installations. But i assume the same projection mechanism can be used for route removal (?). This might be needed considering that NPDAO is not required in NS-MOP and that the VIA lifetimes could be high.

[Pascal] Right. A sentence indicating that a lifetime of zero will trigger a NP DAO and do the cleanup should suffice. Do you agree?

2. Did you also considered installing an SRH (for downstream dest) at intermediate 6LR rather that installing routes along a segment (segment as per defn in the draft)?

[Pascal] This is yet a new mechanism. I’m all for it. The 6LoRH make the task of encaps/insertion a lot easier now. All: if you disagree to the addition please let us know now.

3. There is a redundant paragraph and missing lines at the end of section 5 which tries explaining the example. Please fix the draft and will be nice to check that example.

[Pascal] oups! Will fix before cutoff.

Take care,
Pascal

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