From: Nambi Appachigounder (nambi_gct@yahoo.co.in)
Date: Thu May 18 2006 - 08:15:30 ART
DR will be responsible for forwarding the joins,either
(*,G) or (S,G) towards source/RP.Assert mechanism
makes sure that the traffic is recieved thro the
shortest path from the source/RP.that is the reason
you consider ad,metric etc..
-nambi
--- "Bryant, Paul M"
<paul.m.bryant@uk.verizonbusiness.com> wrote:
> Hi
>
> I am a bit confused about Assert and DR in PIM on
> lans.
>
> So if you have two multicast forwarders connected to
> a LAN they will send an
> Assert message containing group info, unicast
> source, AD and metric of the
> source ( I think )reading RFC I cannot see any other
> info in the pim packet.
> The device with the best route to the source will
> become the chosen
> forwarder for lan. Or if they are the same the
> device with the highest IP
> Address will.
>
> Where does the DR come into this for PIM? I see you
> can set the dr-priority
> to overide a selection of DR that was done using
> highest versus ip address
> but does this priority figure in assert or is the dr
> for some other purpose?
> Your clarification would much appreciated.
>
> Thanks
>
> Paul Bryant
> Senior Network Engineer
>
>
> Verizon and MCI are now operating as Verizon
> Business
>
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