[j-nsp] Same multicast group from the source

[Stacy W. Smith]

You might want to look at ssm-map-policy.

http://www.juniper.net/techpubs/en_US/junos12.2/topics/topic-map/multicast-ssm-map-for-different-groups-to-different-sources.html

I think it meets your needs, but depending on how dynamic your customer's requirements are, it may be cumbersome to maintain.

Here's an example:

[edit]
user at host# show protocols igmp     
interface ge-0/0/0.0 {
    ssm-map-policy S1-only;
}
interface ge-0/0/1.0 {
    ssm-map-policy S1-and-S2;
}
interface ge-0/0/2.0 {
    ssm-map-policy S2-only;
}

[edit]
user at host# show policy-options 
policy-statement S1-and-S2 {
    term 1 {
        from {
            route-filter 224.1.1.1/32 exact;
        }
        then {
            ssm-source [ 1.1.1.1 2.2.2.2 ];
            accept;
        }
    }
}
policy-statement S1-only {
    term 1 {
        from {
            route-filter 224.1.1.1/32 exact;
        }
        then {
            ssm-source 1.1.1.1;
            accept;
        }
    }
}
policy-statement S2-only {
    from {                              
        route-filter 224.1.1.1/32 exact;
    }
    then {
        ssm-source 2.2.2.2;
        accept;
    }
}



On Nov 22, 2012, at 9:54 AM, Riccardo S <dim0sal at hotmail.com> wrote:
> 
> no failover, are completely different data...
> 
> Let's imagine we're talking of TV broadcasting and my customer wants receive today only channel S1 but tomorrow also, maybe, channel S2...
> 
> Ric
> 
>> Date: Thu, 22 Nov 2012 17:51:07 +0100
>> From: chris at chrishellberg.com
>> To: dim0sal at hotmail.com
>> CC: juniper-nsp at puck.nether.net
>> Subject: Re: [j-nsp] Same multicast group from the source
>> 
>> It depends on what you want to do. Should the receiver receive both 
>> sources simultaneously and demultiplex the two? Or do you need failover 
>> of some kind?
>> 
>> /Chris
>> 
>> On 22/11/12 5:40 PM, Riccardo S wrote:
>>> 
>>> 
>>> 
>>> Hi expert team,
>>> 
>>> I’ve a generic multicast question.
>>> 
>>> 
>>> 
>>> Let’s say I’ve two different source
>>> sending different multicast traffic over the same multicast group, how can I
>>> solve the problem for a customer receiver ?
>>> 
>>> 
>>> 
>>> S1=1.1.1.1 G1=224.1.1.1
>>> 
>>> S2=2.2.2.2 G2=224.1.1.1
>>> 
>>> 
>>> 
>>> Customer receiver is usually running
>>> IGMPv2 and I cannot force to use IGMPv3.
>>> 
>>> 
>>> 
>>> Network in the middle between source
>>> and receiver is not MPLS.
>>> 
>>> 
>>> 
>>> I’ve thought to NAT multicast group,
>>> but I’m not sure it works and if anyone has already implemented it…
>>> 
>>> 
>>> 
>>> Any different solution is
>>> appreciated…
>>> 
>>> Tks
>>> 
>>> Ric
>>>  		 	   		
>>> _______________________________________________
>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>> 
> 		 	   		  
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