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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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MPLS_TUNNEL_SF

MPLS_TUNNEL_SF

Description

The MPLS_TUNNEL_SF alarm indicates that the tunnel signal degrades severely. This alarm is reported if the CC packet loss ratio is higher than the SF threshold but CC packets are received in three consecutive periods.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

The quality of service degrades severely and a large number of packets are lost.

Possible Causes

Possible causes of the MPLS_TUNNEL_SF alarm are as follows:

  • An excessive number of bit errors occur.
  • The bandwidth of the tunnel is exhausted.
  • Another service carrier layer is faulty.

Procedure

  1. On the U2000, check whether an alarm indicating excessive bit errors is reported. If yes, clear the alarm. Check whether the MPLS_TUNNEL_SD alarm is cleared.
  2. If the MPLS_TUNNEL_SD alarm persists, go to 3.
  3. On the U2000, check whether the allocated bandwidth is exhausted. If yes, expand the bandwidth allocated to the tunnel or eliminate the source that transmits a large amount of invalid data. Check whether the MPLS_TUNNEL_SD alarm is cleared.
  4. If the MPLS_TUNNEL_SD alarm persists, go to 5.
  5. On the U2000, check whether another service carrier layer, such as the Ethernet layer, is faulty. If yes, rectify running exceptions of the MPLS OAM protocol or setting inconsistency.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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