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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
Entity Name	Module	Indicator	Status
mgt:n where n is an alphanumeric string.	ROADM2, ILA	Fault LED, L1 port	On
mgt:n where n is an alphanumeric string.	ROADM2, ILA	Fault LED, C<n> port	On
sysmgt	CMM	See BTI7800 Series Module and BIC LED Behavior.

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

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.
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.