[Cialug] Multicast, anyone?

[Nathan C. Smith]

Unless you are on a public network you should be able to use an administratively scoped address:

Multicast Address BLocks Assigned by IANA (from RFC 3171).  
Start Address  		Stop Address  		CIDR Notation 			 Name 
224.0.0.0  		224.0.0.255  		224.0.0/24 			Local Network Control Block 
224.0.1.0  		224.0.1.255  		224.0.1/24 			Internetwork Control Block 
224.0.2.0  		224.0.255.0  		- 				AD-HOC Block 
224.1.0.0  		224.1.255.255  		224.1/16  			ST Multicast Groups 
224.2.0.0  		224.2.255.255  		224.2/16 			SSDP/SAP Block 
224.252.0.0  		224.255.255.255  	- 				DIS Transient Block 
225.0.0.0  		231.255.255.255  	- 				RESERVED 
232.0.0.0  		232.255.255.255  	232/8 				Source Specific Multicast (SSM) Block 
233.0.0.0  		233.255.255.255  	233/8 				GLOP Block 
234.0.0.0  		238.255.255.255  	- 				RESERVED 
239.0.0.0  		239.255.255.255  	239/8 				Administratively Scoped Block

-Nate

-----Original Message-----
From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org] On Behalf Of L. V. Lammert
Sent: Monday, October 25, 2010 9:04 AM
To: Central Iowa Linux Users Group
Subject: Re: [Cialug] Multicast, anyone?

On Sun, 24 Oct 2010, jeff at ocjtech.us wrote:

> It's not too had if your network gear has decent support for 
> multicast.  What sort of network gear are you using?  Do you have your 
> network split up into multiple L3 networks?
>
The clients will be using their own bandwidth, the main question in my mind is how to provision the service.

Looking at:

http://www.extremenetworks.com/products/summit-48si.aspx

Which should handle the IGMP snooping to 'connect' each remote request to the multicast output, .. but I do not have clear in my mind how to provision the box - i.e. is a public multi-cast IP required?

	Lee
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