Cisco 6513 multicast and Broadcast traffic

Posted on 2006-04-27
Last Modified: 2012-05-05
how can you stop multicast and broadcast traffic on a Cisco 6513 switch?

what commands can I use?

Question by:jagdhillon
    LVL 3

    Expert Comment

    you can try this

    this will stop all broadcast, multicast and braodcast traffic once it
    reaches 0% of total bandwidth.

    Just assign it to all required interfaces

    interface fastethenet 0/1
      storm-control multicast level 0


    Author Comment

    get the following error message

    Enter configuration commands, one per line.  End with CNTL/Z.
    DAR_BP1_CORE(config)#int gi3/48
    DAR_BP1_CORE(config-if)#storm-control multicast level 0
    Command Rejected: Multicast suppression is not supported on Gi3/48
    LVL 3

    Expert Comment


    add an access-list to block it.

    access-list 111 ip deny any

    assign the access-list to the interfaces.

    Hopefuly this works a bit better....


    Author Comment

    on the interfaces do I apply it on inbound?

    ip access-group 111 in
    LVL 3

    Accepted Solution

    in if you want to block inbound multicast
    out if you want to block sending multicast

    You can add both to an interface

    do not forget some routing protocols use multicast to polulate updates and hello packets,
    this may effect your network.


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