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L2IFPPI/4/MAC_MOVE_WARN

Message

L2IFPPI/4/MAC_MOVE_WARN: MAC move detected. (VLAN=[ULONG], Original-Port=[STRING], Flapping-Port=[STRING])

Description

MAC address flapping occurs in a VLAN.

Parameters

Parameter Name Parameter Meaning

VLAN

VLAN where MAC address flapping occurs.

Original-Port

Port that learns the MAC address first.

Flapping-Port

Ports that learn the MAC address later.

Possible Causes

  • Cause 1: Cables are connected incorrectly.
  • Cause 2: The interfaces where loops occur are added to the same VLAN.
  • Cause 3: No loop prevention protocol such as STP is enabled.

Procedure

  1. Connect cables on the interfaces correctly and check whether the alarm persists.
    • If so, go to step 2.
    • If not, go to step 6.
  2. Check whether the two interfaces that learn the same MAC address can be added to different VLANs according to the networking.
    • If so, go to step 3.
    • If not, go to step 4.
  3. Add the two interfaces that learn the same MAC address to different VLANs. Check whether the alarm persists.
    • If so, go to step 4.
    • If not, go to step 6.
  4. Enable a loop prevention protocol such as STP. Check whether the alarm persists.
    • If so, go to step 5.
    • If not, go to step 6.
  5. Obtain the log file and configuration file, and contact technical support personnel.
  6. End.
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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