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Author Topic: CPU WARNING Shutdown port 3/32 due to excessive control frames multicast 1031  (Read 305 times)

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Offline john walker

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Hi,

I got this error

 CPU WARNING Shutdown port 3/32 due to excessive control frames multicast 1031

after that my mlt goes down,but my mlt is not configured on this port then why it gets down.


Offline Michael McNamara

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    • michaelfmcnamara
    • Michael McNamara
Welcome to the forums!

There are too many Multicast frames being received on port 3/32 than your configuration allows for so the switch is shutting down the port.

You have CP-LIMIT enabled which is preventing the Multicast traffic from over-running the CPU/SF.

Now what's connected to 3/32 that's sending to many Multicast frames? That's the question you need to answer.

Good Luck!
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Offline john walker

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Hi Michael,

Thanks for your reply.

Is it possible that Multicast frames received on 3/32 but my Mlt port on 5/1 goes down.


CPU5 [2017-02-02 13:49:35] CPU WARNING Shutdown port 3/32 due to excessive control frames multicast 1031, broadcast 0 packet per second
CPU5 [2017-02-02 13:48:12] SNMP INFO Spanning Tree Topology Change(StgId=1, PortNum=3/32, MacAddr=00:13:65:40:f0:01)
CPU5 [2017-02-02 13:48:05] HW INFO portLinkDownEvent starting 2017-02-02 13:48:05 on ports 5/1
CPU5 [2017-02-02 13:48:04] [b]SNMP INFO Mlt Link Down Trap