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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter5 Configuring Transponder Line Card Interfaces
Configuring Protocol Monitoring
For SONET errors, the CiscoONS 15530 monitors the SONET section overhead only, not the SONET
line overhead. Specifically, the Cisco ONS 15530 monitors the B1byte and the framing bytes. The
system can detect the following defect conditions:
•Loss of light
•Loss of lock (when the clock cannot be recovered from the r ece ived data st ream )
•Severely errored frame
•Loss of frame
For SONET performance, the system monitors the B1 byte, which is used to compute the four SONET
section layer performance monitor parameters:
The definitions for these acronyms come from the Telcordia SONET standard spec page 6-110.
•SEFS-S (second severely errored framing seconds)
•CV-S (section code violations)
•ES-S (section errored seconds)
•SES-S (section severely errored seconds)
Configuring Protocol Monitoring
To configure protocol monitoring on a transparent interface, and its corresp ond ing wave inter face,
perform the following steps, beginning in global configuration mode:
Examples
The following example shows how to enable protocol mo ni to ring o n a tr an spa re nt in te rfa ce:
Switch(config)# interface transparent 10/0/0
Switch(config-if)# monitor enable
The following example shows how to disable protocol monitoring on a transparent interface:
Switch(config)# interface transparent 10/0/0
Switch(config-if)# no monitor

Displaying Protocol Monitoring Configuration

To display the protocol monitoring configuration of a transparent interface, use the following EXEC
command:
Command Purpose
Step1 Switch(config)# interface transparent
slot/subcard/0
Switch(config-if)#
Selects the transparent interface to configure and enters
interface configuration mode.
Step2 Switch(config-if)# monitor enable Enables signal monitoring.
Note Protocol encapsulation must be configured on the
transparent interface before enabling m onit or ing.