From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed May 04 2005 - 06:53:47 GMT-3
Jim,
I think your remarks are correct only if PIM Dense Mode is being used.
If PIM Sparse Mode is used, then the rtr which sends joins up the tree will
also forward mcast traffic to hosts.
HTH, Tim
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Jim
Sent: Wednesday, May 04, 2005 5:27 AM
To: Danshtr; Cisco certification
Subject: Re: Multicast DR...
On a shared media, the router selected to forward traffic to client is the
one
i) who advertises lowest metric preference ( in other words, lowest AD)
ii) who advertises lowest metric if the metric preference is equal
iii) who has the highest IP address on the network if all other metric are
the same.
PIM bases on other protocols for its routing so you can verify DR selection
by checking the route to Multicast Source in routing and mroute table.
HTH, Jim
----- Original Message -----
From: "Danshtr" <danshtr@gmail.com>
To: "Cisco certification" <ccielab@groupstudy.com>
Sent: Wednesday, May 04, 2005 1:47 PM
Subject: Multicast DR...
> Hello
>
> Reading through multicast documentation, they are mentioning DR and
> queriers which both are intended for deciding which router will
> forward multicast packets to the recievers.
>
> But i couldn't find how the routers, on a shared media, decide which
> one will forward the packets from the source.
>
> Does anyone here knows the answer? I am sure there is... because it works!
>
> --
> Best regards,
> Dan
>
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