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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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MPLS_TUNNEL_AIS

MPLS_TUNNEL_AIS

Description

The MPLS_TUNNEL_AIS is an alarm indicating a defect is detected on a tunnel. The MIP NE sends an AIS packet to the downstream NE when it detects a fault on the Ethernet port. The sink MEP NE reports this alarm upon receiving the AIS packet.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

When this alarm occurs, services are interrupted.

Possible Causes

The possible cause of the MPLS_TUNNEL_AIS alarm is as follows:

Cause: The MIP NE detects a fault on the Ethernet port.

Figure 4-18 shows the process of MPLS_TUNNEL_AIS alarm detection.

Figure 4-18  MPLS_TUNNEL_AIS alarm detection

Procedure

  1. Check whether the faulty NE reports port-, optical module- or board-related alarms, such as ETH_LOS, ETH_LINK_DOWN, LSR_NO_FITED, and HARD_BAD. If any of these alarms are reported, clear them immediately. Then, check whether the MPLS_TUNNEL_RDI alarm is cleared.
  2. If the alarm persists, check whether the physical link between faulty NEs is faulty, for example, whether the optical fiber or cable is damaged or pressed. If yes, replace the faulty optical fiber or cable.
  3. Check whether the faulty NE reports service alarms, such as MPLS_TUNNEL_LOCV. If any of these alarms are reported, clear them immediately. Then, check whether the MPLS_TUNNEL_RDI alarm is cleared.
  4. Check whether the alarm is cleared. If the alarm persists, contact Huawei technical support engineers to handle the alarm.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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