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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/6/MFF_GW_MAC_CHANGED:The MAC of a gateway is changed. (IP=[IPADDR], old MAC=[OCTET], new MAC=[OCTET])


The MAC address matching the MFF gateway's IP address changes.


Parameter Name Parameter Meaning


Indicates the IP address of the MFF gateway.

old MAC

Indicates the original MAC address of the MFF gateway.

new MAC

Indicates the changed MAC address of the MFF gateway.

Possible Causes

The MAC address matching the MFF gateway's IP address changes.


  1. Check whether the gateway has changed its MAC address.
  2. If the MAC address of the gateway is changed, no operation is required.
  3. If the MAC address of the gateway is not changed, run the display mac-address command to check whether the VLAN ID and interface matching the changed MAC address are valid.
  4. If the MAC address belongs to an authorized user, the user's MAC address conflict with the MFF gateway's MAC address. Request the network administrator to change the user's MAC address or MFF gateway's MAC address.
  5. If the MAC address belongs to an unauthorized user, run the mac-address blackhole command to discard the packets from this user.
  6. If the fault persists, collect log information and configuration information, and then contact technical support personnel. For details, see Troubleshooting-Information Collection-Collecting Diagnostic Information.
Updated: 2019-08-21

Document ID: EDOC1000142069

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