Layer 2 multicast using IGMP V2 snooping

Hi Forum,
I hope you are doing great, the reason why I’m writing is to ask your assistance in regards with a question that I have.
We are working with some video surveillance equipment(Endura from Pelco), this equipment are all ip multicast for layer 2 networks, we know that a lot of your switches are compatible with IGMPV2 snooping, I want to design the best network possible for things to run smoothly I was wondering if you could help me decide the best type of switches for core(query) and edge (queries), I need switches that can hold around 250 multicast sessions at a time, also if you can direct me to layer 2 IGMPV2 snooping information and configuration manual I would really appreciate it.
Another thing that I want to ask is to know if I can use an only layer 2 solution with the core and edge switches being Layer 2 or if it would be better to have the core switch as a layer 3 which would be a hybrid solution.
We are thinking of using a 3750 layer 2 as core and 2960 layer 2 as edge
I hope you have the time to answer my questions.
Have a great day
Bruno Martinez
Excel

Brian
Yes you need the IGMP snooping querier function if you have no L3 interfaces configured with PIM. IGMP snooping on a switch listens to the IGMP queries and responses to those queries. If you have a L3 interface(s) running PIM then they will send the IGMP queries. But if you don't then nothing will make the queries so IGMP snooping has nothing to listen to.
So, if the switch supports it, you can use the IGMP snooping querier which makes IGMP queries. See this link for how to configure it -
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_55_se/configuration/guide/swigmp.html#wp1193337
You should enable it on one of your 2960 switches.
As for the ESW520, i'm sorry but i don't know is the short answer. That is a small buisness switch and they have their own forums so perhaps you could post that question in those.
Jon

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