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IsisAdjDown

 

Table 1: Alarm Details

Parameter

Description

Code

isisAdjDown

Description

IS-IS AdjacencyDown: An IS-IS adjacency is down and no longer being considered for routing.

Note: This alarm can be raised only after an adjacency (neighbor) has been established.

Entities Affected

Management interfaces (see respective table below).

Possible Causes

  • A fiber is either cut or disconnected.

  • Equipment (for example, the router or module) on the neighbor side is down; for example, it is being restarted.

Default Severity

Major

Service Affecting

Yes (true).

Alarm Clearing

See Clearing an IsisAdjDown alarm.

Related Fault Hierarchy

Table 2: Management Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

mgt:n

where n is an alphanumeric string.

ROADM2, ILA

Fault LED, L1 port

On

Fault LED, C<n> port

sysmgt

CMM

See BTI7800 Series Module and BIC LED Behavior.

Clearing an IsisAdjDown Alarm

Note

Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

  1. Do the following:
    • Inspect the fiber connection, and ensure that the fiber is intact, thoroughly clean, and correctly connected to the port.

    • Check the equipment on the neighbor side and ensure that it is powered on and operating.

  2. Check for alarms on the management interface.
    • If the alarm has cleared, you have completed this procedure.

    • If the alarm does not clear, contact your next level of support.