Hello Experts,

I am using CRS326-24G-2S+ as switch, and want to block multicast traffic, do I have to use SwitchOS, or can I do this over RouterOS?



Thank you.

you can use:

In RouterOS switch Rules
in SwOS ACL rules

I have tried to search but cannot get anything which works to block the multicast traffic. Can you please help me with some pointers please.

Thank you.

Have a look at http://www.firewall.cx/networking-topic ... icast.html or
https://www.cisco.com/c/dam/en/us/produ ... 310883.pdf

Drop:
drop frames to the multicast mac range
drop frames with ip protocol to the multicast ip range (https://en.wikipedia.org/wiki/Reserved_IP_addresses)