Setting up inter-vlan multicast routing?

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I'm trying to setup multicasting so I can run a multicast installation of Windows 7 from Windows Deployment Services. I have two Enterasys switches/routers in between the windows server and the client machines that need to be imaged.

I've already run interface vlan 1, then ip igmp enable, which seems to have caused our igmp group table to start populating with odd devices on the network that must have always been sending multicast packets.

The thing is, the machines that need to be imaged are on vlan 16. Do I only need to run this command on vlan 16 to complete the configuration and get multicasting working from point A to B, or is there another step something to "bridge the gap"?
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tgp1994

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Posted 5 years ago

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Andre Brits Kannemeyer

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Hi tgp1994

The IGMP snooping that you have enabled is for layer 2 Multcasting, contained within one vlan.
In addition you will need Multicast routing (DVMRP or PIM-SM) between your vlans to see the Multicast groups from vlan 1 in vlan 16

I am not sure what enterasys kit you have but you will require a C series or up with advance routing license.

On the website you can find a very good document on how to configure Multicast
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Andre Brits Kannemeyer

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Tamera Rousseau-Vesta, Extreme Alumna

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Hi Glen, Did you find the information on our site for Multicast?  If not, please let me know and I can point you in the right direction. Thanks!
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tgp1994

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Thanks for your responses guys,

I guess we're a little mystified here. One of our network engineers put a port on one of the switches to the server's vlan, although the application I've been using to test multicast (Microsoft's mcast.exe utility) still doesn't work. I know it's hard to be a messenger here when you're trying to go back and forth between the two parties for support, so I'm not sure if we may just find alternatives for getting these laptops imaged with WDS.
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Tamera Rousseau-Vesta, Extreme Alumna

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Hi Glen, I am going to consult with an expert here and see what answers we can get you to help.  
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Tyler Marcotte, Official Rep

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Hi tgp1994,

Can you let us know what types of switches you're using? The configuration that Andre described should be working. Perhaps an example config as well?

Thanks!

-Tyler
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tgp1994

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Hi Tyler,

I apologize for the late response, but I'm coming back
to this after getting a bit of a break with the type of work that needed
to be completed yesterday.

I read over the previously linked to PDF a little more closely and talked with one of our network engineers; it sounds like they purchased some licenses awhile ago (one which may have been the aforementioned advanced routing license), so he was going to look into activating our router.

Otherwise, I think we'll just be using the same VLAN.

Thanks!