Extreme Networks BlackDiamond 6800 Installation And User Manual page 65

Table 3-6: SONET Events (continued)
Event
Path Payload Label
Mismatch (PLM-P)
Signal Failure Bit Error
Rate (SF BER)
Signal Degrade Bit Error
Rate (SD BER)
Asynchronous Transfer Mode (ATM) Module Installation and User Guide
Description
The Path Payload Label Mismatch event occurs when the received
payload type does not match the expected payload. This event is
commonly caused by a Signal Label or scrambling mode mismatch
configuration error.
Related SONET Overhead: C2 carries the Signal Label.
The Signal Failure BER event occurs when the B2 bit error rate
exceeds the configured SF threshold.
Related SONET Overhead: B2 carries line parity.
SONET Action: Send RDI-L upon detecting SF BER event.
The Signal Degrade BER event occurs when the B2 bit error rate
exceeds the configured SD threshold. This event is used for APS
switching.
Related SONET Overhead: B2 carries line parity.
Configuring and Monitoring SONET
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