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VistaICT's avatar
Jul 05, 2024
Solved

M4300 ACL Help - Multicast traffic ignoring ACL

Hey Team, 

I want to make a VLAN where clients can only communicate with the gateway and not each other. This is often called 'private VLAN' or 'client isolation'.

I'm attempting to do this with MAC ACL's.

I have two ACLs, each ACL has one rule:

  • GUEST-IN (assigned to inbound)
    • DST MAC = AA:BB:CC:DD:EE:FF/00:00:00:00:00:00
  • GUEST-OUT (assigned to outbound)
    • SRC MAC = AA:BB:CC:DD:EE:FF/00:00:00:00:00:00

The ACLs are bound to a client interface and appear to be working for unicast traffic, but not multicast traffic... have I missed something?

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