Alcatel-Lucent 7750 SR OS - Page 379

Interface Configuration
7750 SR OS Interface Configuration Guide Page 379
threshold
Syntax threshold {ber-sd | ber-sf} rate threshold-rate
no threshold {ber-sd | ber-sf}
Context config>port>sonet-sdh
Description This command configures the line signal degradation bit error rate (BER) and line signal failure
thresholds.
Line signal (b2) bit interleaved parity error rates are measured and when they cross either the
degradation or failure thresholds alarms are raised (see the report-alarm line & section command),
furthermore if the failure threshold is crossed the link will be set to operationally down.
Note: For APS configurations, if the ber-sd or ber-sf threshold rates must be modified, the changes
must be performed at the line level on both the working and protect APS port member. See port aps-
id on page 276.
The no form of this command reverts to the default value.
Default
threshold ber-sf 6 — Signal degrade BER threshold of 10
-6
threshold ber-sf 3 — Signal failure BER threshold of 10
-3
Parameters ber-sd — Specifies the BER that specifies signal degradation
ber-sf — Specifies the BER that specifies signal failure
rate — The BER negative exponent (n in 10
-n
), expressed as a decimal integer.
Values 3 — 9 (10
-3
— 10
-9
)