Chapter 6: Packet-over-SONET Configuration Guide
62 SmartSwitch Router User Reference Manual
• 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:
Monitoring PoS Ports
To display PoS port configuration information, enter one of the following commands in
Enable mode:
The following table describes additional monitoring commands for IP interfaces for PoS
links, designed to be used in Enable mode:
Specify signal degrade BER
threshold.
sonet set <port> sd-ber <number>
Specify signal failure BER
threshold.
sonet set <port> sf-ber <number>
Show framing status, line type, and circuit
ID of the optical link.
sonet show medium <port list>
Show working or protecting line, direction,
and switch status.
sonet show aps <port list>
Show received path trace. sonet show pathtrace <port list>
Show loopback status. sonet show loopback <port list>
Display bridge NCP statistics for
specified PoS port.
ppp show stats port <port name> bridge-
ncp
Display IP NCP statistics for
specified PoS port.
ppp show stats port <port name> ip-ncp
Display link-status statistics for
specified PoS port. ppp show stats port <port name> link-
status
Display summary information for
specified PoS port. ppp show stats port <port name> summary