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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The MPLS_TUNNEL_EXCESS alarm indicates that excessive trail termination source identifiers (TTSIs) are received. This alarm is reported if five or more correct CV/FFD packets are received in three consecutive CV/FFD periods.


Alarm Severity Alarm Type


Communication alarm



Impact on the System

Services may be interrupted if excessive redundant packets are received.

Possible Causes

Possible causes of the MPLS_TUNNEL_EXCESS alarm are as follows:

  • The physical link is incorrectly connected.
  • Multiple tunnels are configured with the same value of Next Hop Address.


  1. Check whether an optical fiber or a cable is incorrectly connected between both ends. If yes, rectify the fiber/cable connection. Then, check whether the alarm is cleared.
  2. If the alarm persists, go to 3.
  3. On the U2000, check whether multiple tunnels are configured with the same value of Next Hop Address.
  4. If multiple tunnels are configured with the same value of Next Hop Address, delete extra tunnels or change the Next Hop Address parameter to different values.
    1. To delete the extra tunnels, select the extra tunnels and click Delete.
    2. To change the Next Hop Address parameter, select the required tunnels and click Modify.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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