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Cisco ONS 15501 User Guide
78-14134-01, Release 1.0
Chapter 3 Configuring the Cisco ONS 15501
Alarm Contact Closures
Configuring for SNMP
To configure the Cisco ONS 15501 for SNMP, follow these steps:
Step 1 Connect the Cisco ONS 15501 to an Ethernet LAN using a standard RJ-45 cable.
Step 2 Enter add-snmp-mgr manager-ip to set the SNMP manager IP addresses. The maximum number of
SNMP manager IP addresses is 16.
Step 3 Enter get-snmp-mgr to display the list of SNMP managers.
Step 4 Enter del-snmp-mgr manager-ip to delete an SNMP manager entry.
Alarm Contact Closures
The Cisco ONS 15501 provides a front panel, single form C, discrete external alarm output. (See the
“Cisco ONS 15501 Front Panel” section on page 1-7 for additional information.) The external alarm
output is through the eight wires of an RJ-45 connector.
The following events are reported by the discrete external alarms through individual alarm contacts:
• Alarm 1—Loss of input power supply or power supply out of range
• Alarm 2—Failure in the pump laser bias or pump laser temperature (overheating)
• Alarm 3—Loss of input signal or input signal power below threshold
Note The default state of the alarm contacts is Normally Open. Depending on which fault condition occurs,
specific alarm contacts close and cause the corresponding Cisco ONS 15501 LEDs to turn on. (See
the “Cisco ONS 15501 LED Alarm Definitions” section on page 1-8 for additional information.)
Table 3-2 lists the RJ-45 pinouts for the alarms.
Table 3-2 Alarm Pinouts
Pinout Alarm
1 Alarm 1+ (power)
2Alarm 1-
3 Alarm 2+ (major)
4Alarm 2-
5 Alarm 3+ (minor)
6Alarm 3-
7 Alarm 4+ (no connection)
8Alarm 4-
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