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block multicast on a single interface of 3560 switch?

gmtimmons
Beginner
Beginner

I have a 3560 in the shop that several plc devices are connected to. Port fa/03 jumps to a third party switch for the a group of plcs and they multicast heavy. I would like to block port 3 on my 3560 to keep it from forwarding it to the rest of the network. Thought the 3560 blocked multicast by default, but apparently I am mistaken...thanks in advance

interface FastEthernet0/3

switchport access vlan 33

spanning-tree portfast

2 Replies 2

rducombl
Cisco Employee
Cisco Employee

did you try :

switchport block multicast

Configured on fas 0/3 that will prevent to forward multicast out of that port

Roland

yes I tried it on fa0/3 and the fiber port gi0/1 still coming through Its odd there are other ports multicasting but are saying put on that switch as they should Its just the traffic from fa0/3 that i can see on wireshark

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