Chapter 6: Packet-over-SONET Configuration Guide

Signal failure BER threshold of 10-3(1 out of 1,000 bits transmitted is in error). Signal failure is associated with a “hard” failure. Signal fail is determined when any of the following conditions are detected: loss of signal (LOS), loss of frame (LOF), line alarm indication bridge and selector signal (AIS-L), or the BER threshold exceeds the configured rate.

To specify different BER thresholds, enter the following commands in Enable mode:

Specify signal degrade BER

sonet set <port> sd-ber <number>

threshold.

 

 

 

Specify signal failure BER

sonet set <port> sf-ber <number>

threshold.

 

 

 

Monitoring PoS Ports

To display PoS port configuration information, enter one of the following commands in Enable mode:

Show framing status, line type, and circuit

sonet show medium <port list>

ID of the optical link.

 

 

 

Show working or protecting line, direction,

sonet show aps <port list>

and switch status.

 

 

 

Show received path trace.

sonet show pathtrace <port list>

 

 

Show loopback status.

sonet show loopback <port list>

 

 

The following table describes additional monitoring commands for IP interfaces for PoS links, designed to be used in Enable mode:

Display bridge NCP statistics for

ppp show stats port <port name> bridge-

specified PoS port.

ncp

 

 

Display IP NCP statistics for

ppp show stats port <port name> ip-ncp

specified PoS port.

 

 

 

Display link-status statistics for

ppp show stats port <port name> link-

specified PoS port.

status

 

 

Display summary information for

ppp show stats port <port name> summary

specified PoS port.

 

 

 

62

SmartSwitch Router User Reference Manual

Page 88
Image 88
Cabletron Systems 9032578-05 manual Monitoring PoS Ports, Specify signal degrade BER, Threshold Specify signal failure BER