[Roll] DIS for given parent in draft-thubert-roll-eliding-dio-information

"Li Zhao (liz3)" <liz3@cisco.com> Tue, 19 November 2019 05:34 UTC

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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: DIS for given parent in draft-thubert-roll-eliding-dio-information
Thread-Index: AQHVnpr36jrTS5isFE26D+k2w62PDA==
Date: Tue, 19 Nov 2019 05:34:08 +0000
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Subject: [Roll] DIS for given parent in draft-thubert-roll-eliding-dio-information
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Hello all,

As we discussed today, there is a requirement that node sends out multicast DIS to only reset given parent’s Trickle.

Can we enhance Solicited Information option to add a flag to identify given parent’s address as following?

        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
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |   Type = 0x07 |Opt Length = 19| RPLInstanceID |V|I|D|P| Flags |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                                                               |
       +                                                               +
       |                                                               |
       +                            DODAGID                            +
       |                                                               |
       +                                                               +
       |                                                               |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |Version Number | Parent Address     (16bytes)                  |
       +-+-+-+-+-+-+-+-+                                               +
       +                                                               +
       |                                                               |
       +                                                               +
       |                -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       +-+-+-+-+-+-+-+-+

P flag: One Bit, indicates DIS request response from given parent


Best regards,
Li