The 7705 SAR supports custom alarms on Ethernet ports without the need to deploy a dry-contact alarm aggregator. Custom alarms can be created and assigned to any RJ-45 port; the port must be configured for 100Base-Tx operation with autonegotiation disabled. One alarm input can be configured for each port with the following:
name
description
association with a user-defined alarm
Alarm inputs must be associated with an alarm in order for them to be triggered. Alarm inputs consist of an Ethernet LOS event caused by breaking contact loops between pins 1 and 3 or 2 and 6 on the Ethernet port. Breaking either loop will trigger the port alarm, and reconnecting the loops will clear the alarm.
For information on configuring the alarm inputs, see Configuring Auxiliary Alarm Card, Chassis, and Ethernet Port External Alarm Parameters.