Cisco SONET/SDH Specifications download pdf (Page 25)

CHAPTER

3-1

Cisco ONS 15454 SONET/SDH Unified Control Plane Configuration Guide

OL-4214-01

Alarm Troubleshooting

This chapter describes the alarms and conditions associated with the unified control plane (UCP). For

procedures that clear UCP alarms, refer to Release 3.4 or later of the Cisco ONS 15454 Troubleshooting

Guide or the Cisco ONS 15454 SDH Troubleshooting Guide.

3.1 UCP Alarms

Table 3-1 lists the UCP alarms.

Table 3-1 Alarm Descriptions

Alarm Severity Description

CKTDOWN Critical

Service affecting

The UCP Circuit Down alarm applies to logical circuits created within the

UCP between devices. It occurs when a signaling failure occurs across a

UCP interface. The failure can be caused by a number of things, such as

failure to route the call within the core network. In that case, the alarm

cannot be resolved from the ONS 15454 because the node serves as an edge

device.

RSVP-HELLODOWN Minor

Non-service affecting

The RSVP Hello Down alarm occurs when the hello protocol, which

monitors UCP control channel status, is not available for reserving

resources. The lack of availability can be caused by misconfiguration or loss

of connectivity between the reporting node and its neighbor.

LMP-HELLODOWN Minor

Non-service affecting

The LMP Hello Down alarm occurs when the hello protocol, which

monitors UCP control channel status, is not available for link management.

Unavailability can be caused by physical layer errors (such as cabling) or by

control channel misconfiguration.

LMP-NDFAIL Minor

Non-service affecting

The LMP Neighbor Detection Fail alarm occurs when neighbor detection

within the UCP has failed. LMP-NDFAIL can be caused by physical failure

(such as cabling) between the neighbors or by control channel

misconfiguration.

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Cisco SONET/SDH Specifications Page 25