multicast router

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smartsoul2
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Joined: 16 Dec 2010 04:52

multicast router

Post by smartsoul2 » 01 Feb 2011 13:18

Hello ,
I am designing a network comprising internet, voice and IPTV. Am planning to put each service into a vlan , my core switch will be 6855s and 6400 as access switches. I dont have a lot of experience with multicasting ! We are not planning to route the multicast traffic in the future , so this mean that all the multicast traffic will be Layer 2 only. My question is whether i will need a multicast router? as per what i understood, its the multicast router which manages IGMP group membership right?
Thanks for helping

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cedric1
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Joined: 26 May 2009 18:00
Location: Luxembourg ACSE R6

Re: multicast router

Post by cedric1 » 03 Feb 2011 08:48

hello

6855 is the router switch : if your multicast need to be routed
configure Loopback0 ip interface
configure ip interface for each vlan (lan, voice and iptv) and for multicast server
enable PIM-SM for routing multicast
enable pim interface for each ip interface you have configured and add ip you add for Loopback0 too
configure a cbsr (ip pim cbsr <ip of Loopback0>)
configure a candidate-rp <ip of loopback0> 224.0.0.0/4
enable multicast switching -> ip multicast status enable
enable multicast querying -> ip multicast querying enable

if not routed put your server in same vlan as client multicast vlan and enable only last 2 lines
configure an ip interface for vlan iptv
enable multicast switching -> ip multicast status enable
enable multicast querying -> ip multicast querying enable

///////////////
on 6400
enable ip multicast switching only

you are done

Cedric

smartsoul2
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Posts: 26
Joined: 16 Dec 2010 04:52

Re: multicast router

Post by smartsoul2 » 05 Feb 2011 03:24

thanks cedric. you just gave me some very precious information. One last thing, is this multicast layer 2 setup , which equipment is going to manage the IGMP group mermbership? thanks

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cedric1
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Location: Luxembourg ACSE R6

Re: multicast router

Post by cedric1 » 10 Feb 2011 13:10

hello

all device with ip multicast enable will have a view of igmp group membership, so to optimize flow output on your multicast vlan.

Cedric

smartsoul2
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Posts: 26
Joined: 16 Dec 2010 04:52

Re: multicast router

Post by smartsoul2 » 10 Feb 2011 23:23

thanks cedric, i appreciate it.

timon74
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Joined: 18 Jun 2011 01:25

Re: multicast router

Post by timon74 » 07 Nov 2012 12:15

Hello,

I would like to do the same configuration: multicast not routed.
But I have an alcatel 7800 as router and os6400 as access switchs.
what'is the -> ip multicast querying enable command for OS7800 ?
is it ->ip multicast hardware-routing enable" ?

Thanks for your help

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