SRW224G4P IGMP Support

Question

I choose to buy a SRW224G4P with this documentation:
http://www.cisco.com/en/US/docs/switches/lan/csbms/srw248g4p/administration/guide/SRW224G4P-248G4P_User_Guide.pdf
On this documentation, the switch is able to use IGMP v3 and IGMP querier:
p99:  IGMP Version
Sets the protocol version for compatibility with other devices on the network. All systems on the subnet must support the same version. Also note that some attributes are only enabled for IGMPv2 and/or v3, including Act as IGMP Querier, IGMP Report Delay and IGMP Query Timeout. (Range: 1-3; Default: 2)
The switch that I receive is note able to do this.
The version of the firmware describe in this documentation is:
p32: Firmware Version 1.2.4 Aug 27 2008
And my switch has the version 1.0.2 which is the only available on the Cisco website at
http://tools.cisco.com/support/downloads/go/PlatformList.x?sftType=WebView+Managed+Switch+Firmware&mdfid=282414072&treeName=Switches&mdfLevel=Model&url=null&modelName=Cisco+SRW224G4P+24-port+10%2F100+%2B+4-port+Gigabit+Switch+-+WebView%2FPoE&isPlatform=N&treeMdfId=268438038&modifmdfid=null&imname=&hybrid=Y&imst=N
Where can I find this new firmware?
I bought this switch for a VOD network, and I really need this features.
Thanks for your help

Answer 1

Hi
Got a few questions regarding your posting.
I am using RFC 4541 as a reference.
Section 2.1.1 : IGMP forwarding rules mentions ;
A snooping switch should forward IGMP Membership Reports only to those ports where multicast routers are attached.
This statement brings up a interesting  point as to what is your Layer 3 querier or router  in this test network, and I guess
you must have a router in the mix of equipment?
On My network, I have my SRW2008P connected to my UC520 (only 8 user
SKU).  My Layer 3 UC520 is my IGMP router and  querier.
My concern here is understanding which streams have registered via sending a
join with  group membership with a Layer 3 Querier, your router.
If a set top box has sent a membership report or  join to a particular group then other switch ports on the SRW224G4P
will not receive the flood of that multicast stream.
But if no one has joined the stream that is flooded into that switch , as the RFC suggests on page 6 section 3 "
“A switch may default to forwarding unregistered packets on all ports."
So having pasted that for your reference, I checked out the behavior in my test network.
I had setup four streams from my Multicast IP TV server.
These four  streams just blasted into the switch  with  no  membership query or joins from  my set top box
and a result they were flooded to my ethereal PC on a separate switch port.
This is expected behaviour.
My set top box joined a 4th stream, at that point  my SRW2008P switch stopped the flow of that stream to my ethereal PC.
Or  in other words my SRW2008P igmp snooping  module made that intelligent decision to
stop the flow of that 4th stream to my PC.  This PC being on a separate switch port compared to my set top box.
To better understand what is going on I need to know more about your test environment, but this behaviour follows the RFC mentioned..
But does this default behavior sound familiar, i just don;t have enough information to check what might be happening on your system.