Re: [pim] IGMP query solicitation message

Harvey <flycoolman@gmail.com> Thu, 02 July 2020 20:24 UTC

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From: Harvey <flycoolman@gmail.com>
Date: Thu, 2 Jul 2020 16:24:30 -0400
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To: gangadhara reddy chavva <meetgangadhara@gmail.com>
Cc: pim@ietf.org
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Subject: Re: [pim] IGMP query solicitation message
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Hi Gangadhar,
The links below might be worth taking a look at.
https://tools.ietf.org/html/draft-ietf-idmr-igmp-mrdisc-10

http://stevehaskew.blogspot.com/2014/06/igmp-query-solicitation.html#:~:text=As%20well%20as%20flooding%20the,send%20out%20a%20General%20Query.

Thanks,
Hongwei


> Date: Thu, 2 Jul 2020 13:07:07 +0530
> From: gangadhara reddy chavva <meetgangadhara@gmail.com>
> To: pim@ietf.org
> Subject: [pim] IGMP query solicitation message
> Message-ID:
>         <
> CAAG_SC-beE+fywnhovZiaAsS_9-bBLEPAz-MHEYihxnz9nRSdw@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi,
>
> I could see a problem in igmp snooping functionality during port shut and
> unshut, RP switchover. During these triggers if the igmp snooping switch is
> not querier, it can't send query messages immediately to get the report
> message from the hosts. so snooping switch has to wait for the next querier
> query interval to learn the entries. Because of this there could be traffic
> drop/flood in the bridge domain.
>
> I could see some vendors are using query solicitation messages to trigger
> query messages immediately so the snooping switch can converge the traffic
> quickly.
>
> when i search for query solicitation message i couldn't find it in any
> ietf/rfc documents which suggest the same. Did I miss something?  Please
> let me know if there is any IETF/RFC document which suggests the same.
>
> Thanks,
> Gangadhar
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