Limit of Multicast Sources on a 2960 / 3560

gwildfire · ‎01-04-2008

Hello group, I have seen a problem with a 2960 and 3560 where after having more than 18 multicast senders results in severe loss of video frames. Each source is 1.5Mb/s.

When using the same setup with a 3750 I can have more than 40 senders without any issue. Is there some limitation in the number of source/senders on a 2960 and 3560? If so where is this documented?

The switches have pretty much been left at default as far as multicast goes, (IGMP Snooping etc)

I have tried CGMP instead but the result is the same, anything over 18 senders causes all of the feeds to be useless.

Thanks

Graham

owillins · ‎01-10-2008

Use the following document it describes about the multicast and its limitation for the switches 2960 and 3560.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_fx/release/notes/OL7076.html#wp37758

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_40_se/release/notes/OL13860.html#wp539899

romainpage · ‎01-11-2008

Hi,

Did you find anything for your issue as I am facing what you are seeing too : with more than 20 senders, multicast is not working anymore for additonnal streams ?

The links provided previously do not give any details regarding this.

Best regards,

Romain