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Webcast-Catalyst9k
New Member

port security and multicast mac addresses

We have tried to configure port security allowing only one mac address. The problem we have seen is that multicast mac addresses are taking over that mac address, so now we have opened up for three macaddresses to make multicast work as well. Is this the way it should work??? I have looked but haven´t been able to find anything. Doesn´t feel very secure now.

1 REPLY
New Member

Re: port security and multicast mac addresses

Are you saying that the MAC the port locks down is a MAC other than the directly connected device? With CISCO I have not seen that happen. With Foundry, when using dynamic VLANS, that can occur. The only thing I could suggest is to try to clear port security, while port security is enabled, and see if it locks in the correct MAC. (which you may have already tried)

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