From: Ramiro Garza (ccie15xxx@gmail.com)
Date: Mon Dec 12 2005 - 00:19:50 GMT-3
The error I see in the config in doc cd's multicast helper example is the
following
*Router CLast Hop Router Configuration*
interface ethernet 2 *<- should be interface ethernet 1*
ip directed-broadcast
ip multicast helper-map 224.5.5.5 178.21.34.255 135
ip pim dense-mode
On 12/11/05, steven richards <ccie_2005@hotmail.com> wrote:
>
> Thats what I thought I guess the Doc CD just has it incorrect. Thanks for
> the input :)
>
>
> >From: "Shaikh, Nasir" <Nasir.Shaikh@atosorigin.com>
> >To: "steven richards"
> ><ccie_2005@hotmail.com>,<Lee.Donald@t-systems.co.uk>,<
> ccielab@groupstudy.com>
> >Subject: RE: Using the IP Multicast Helper Map command
> >Date: Wed, 7 Dec 2005 13:48:22 +0100
> >
> >When converting multicast to broadcast you have to use the broadcast
> >address of the destination subnet.
> >e.g if the interface address of the destination subnet is 172.16.1.0 /28
> >and you are converting the multicast stream for 224.5.5.5 then your
> command
> >would be:
> >ip multicast helper-map 224.5.5.5 172.16.1.15 <with eventual access-list>
> >
> >remember to enable directed broadcast on the appropriate interfaces.
> >
> >regards
> >Nash
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >steven richards
> >Sent: vrijdag 2 december 2005 23:50
> >To: Lee.Donald@t-systems.co.uk; ccielab@groupstudy.com
> >Subject: RE: Using the IP Multicast Helper Map command
> >
> >
> > In that case the example on the doc cd shows 172.16.0.0 as being the
> >destination address. But it also makes mention of if you want to
> broadcast
> >to all hosts on the subnet use 172.16.0.255. So if my destination was on
> >the
> >172.16.0.X subnet would I use 172.16.0.255 or 172.16.0.0 ?
> >
> > Thanks,
> >
> >
> > >From: Lee Donald <Lee.Donald@t-systems.co.uk>
> > >To: 'steven richards' <ccie_2005@hotmail.com>, ccielab@groupstudy.com
> > >Subject: RE: Using the IP Multicast Helper Map command
> > >Date: Fri, 2 Dec 2005 11:10:51 -0000
> > >
> > >Steve,
> > >
> > >Multicast or broadcasts could not be sent to just one unicast address
> no.
> > >
> > >At the destination this multicast would be turned into a broadcast and
> > >flooded out onto the local subnet, this would go to all hosts.
> > >
> > >HTH
> > >
> > >Lee.
> > >
> > >
> > >
> > >-----Original Message-----
> > >From: steven richards [mailto:ccie_2005@hotmail.com]
> > >Sent: Friday, December 02, 2005 10:57 AM
> > >To: ccielab@groupstudy.com
> > >Subject: Using the IP Multicast Helper Map command
> > >
> > > I am trying to understand how this command is used to convert from
> > >broadcast to multicast and then back to broadcast to a single host
> >address.
> > >From this example from what I can see if I wanted to convert the
> >multicast
> > >to broadcast on the destination subnet I can use ip broadcast-address
> > >172.16.0.255 and ip multicast helper-map 224.5.5.5 172.16.0.255 ? At
> >least
> > >I
> > >
> > >think ;) Would I just be able to send this to a single host on the
> > >destination side ? Like if I just wanted to send this to 172.16.0.11
> >would
> > >I
> > >
> > >use ip broadcast-address 172.16.0.11 and ip multicast helper-map
> >224.5.5.5
> > >172.16.0.11 ?
> > >
> > > Thanks,
> > >
> > >
> > >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr
> > >mc_r/mult/1rfmult2.htm#wp1089138
> > >
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