Block Multicast

RouterOS General
1

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.

2

you can use:

In RouterOS switch Rules
in SwOS ACL rules

3

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.

4

Have a look at http://www.firewall.cx/networking-topics/general-networking/107-network-multicast.html or
https://www.cisco.com/c/dam/en/us/products/collateral/ios-nx-os-software/ip-multicast/prod_presentation0900aecd80310883.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)