03-23-2009 02:30 PM - edited 03-06-2019 04:46 AM
I have a 3750-e, without routing or multicast enabled. there are two switch ports which uplink a firewall and router that are supporting multicast. How would one block multicast traffic on ports that don't need multicast and still support multicast, in this case, on the ports that do?
thanks, Kevin
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03-23-2009 03:40 PM
Kevin
IGMP snooping should be enabled by default. This is all you really need to meet your requirement -
Jon
03-23-2009 02:54 PM
Kevin
Not entirely sure i understand what you are asking. Do you mean you want multicast packets to go through the switch but only on the relevant ports ?
If so you need to turn on IGMP snooping on the 3750-e switch.
If not please clarify.
Jon
03-23-2009 03:03 PM
hi Jon, yes, correct
multicast isn't enabled, but I want to allow it only an couple ports. I found the "switchport block multicast" command, but my boss mentioned to make sure to use igmp snooping. What are the commands for these two options?
thanks, Kevin
03-23-2009 03:40 PM
Kevin
IGMP snooping should be enabled by default. This is all you really need to meet your requirement -
Jon
03-23-2009 03:43 PM
jon, got it, thanks
03-23-2009 03:40 PM
"multicast isn't enabled"
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