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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)E2
AppendixA Command Reference
Interface Configuration Commands
For the alarm and warning threshold default values, see the “Usage Guidelines” section.
Alarm severity: major
Warning severity: not alarmed
Command Modes Interface configuration for WB-VOA modules, transponder line cards, and 10-Gbps ITU trunk cards
Subinterface configuration for PB-OE modules
Command History
Usage Guidelines The default value for high alarm threshold corresponds to the receiver saturation level for the
transponder module.
The default value for low alarm threshold corresponds to the Loss of Light condition. Exceeding the low
alarm threshold on the active wavepatch interface causes a protection switchover to the standby
wavepatch interface, provided that the standby interface is up and operating normally prior to the
protection switchover.
The default values cover most network conf ig urat ions. Ho we v er, when optical amplifiers are used in the
network in the receive direction as preamplifiers, the low alar m thr eshol d value should be reconfigured,
since the amplified noise level might be higher than the sensitivity of the receiver and the protection
switchover might not be triggered. In such cases, we recommend setting the low ala rm thr eshol d t o
10 dB below the power level measured at the interface when a signal exists or to –28dB, whichever value
is greater.
The value of a high warning threshold must be less than the value of the high alarm threshold. The value
of a low warning threshold must be greater than the value of the low alarm threshold.
Examples The following example shows how to set the optical power low alarm threshold on a PB-O E mod ule .
Switch(config)# interface voafilterin 9/0/0.1
Switch(config-if)# optical threshold power receive after-attenuation low alarm -210
Active wavepatch on a
2.5-Gbps transponder line
card
–28 dBm –26 dBm –8 dBm –10 dBm
Standby wavepatch on a
2.5-Gbps transponder line
card
–28 dBm –26 dBm –15 dBm –13 dBm
Active wavepatch on a
10-Gbps transponder
module
–22 dBm –20 dBm –6 dBm –8 dBm
Interface Type Low Alarm Low Warning High Alarm High Warning
Release Modification
12.1(10)EV2 This command was introduced.