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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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SECE/4/STORMCTRL_MC_BLOCKED:Multicast packets are blocked at interface [STRING].


Multicast packets were blocked on the interface.


Parameter Name Parameter Meaning


Indicates the interface name.

Possible Causes

A broadcast storm occurred on the interface, and the rate of multicast packets received on the interface exceeded the upper threshold. As a result, multicast packets were blocked on the interface.


  • Check whether the broadcast storm is caused by a loop. If so, remove the loop. When the average rate of multicast packets received on the interface falls below the lower threshold, multicast packets are properly forwarded by the interface. For the broadcast storm troubleshooting procedure, see MAC Address Flapping Occurs on a Layer 2 Network and STP Faults Occur in the Revelations of Troublesolving.
Updated: 2019-08-21

Document ID: EDOC1000142069

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