Alcatel-Lucent 7750 Configuration Manual page 627

Switching-arch
Revertive-mode
Revert-time
Rx K1/K2 byte
Tx K1/K2 byte
Current APS Sta-
tus
Mode Mismatch
Cnt
Channel mismatch
Cnt
PSB failure Cnt
FEPL failure Cnt
No. of Switcho-
vers
Last Switchover
Switchover sec-
onds
Signal Degrade
Cnt
7750 SR Interface Configuration Guide
Label
The architecture of the APS group.
Displays the revertive mode of the APS group.
nonrevertive
switch request is received.
revertive
protection line has been cleared the signal is switched back to the working
line.
Displays the configured time, in minutes, to wait after the working circuit
has become functional again, before making the working circuit active
again. If the revertive mode is non-revertive, then this field will be empty.
Displays the value of the SONET/SDH K1/K2 byte received on the
interface.
Displays the value of the SONET/SDH K1/K2 byte transmitted on the
interface.
Displays the current APS status.
Indicates the number of times a conflict occurs between the current local
mode and the received K2 mode information.
Indicates the number of mismatches between the transmitted K1 channel
and the received K2 channel has been detected.
Displays a count of Protection Switch Byte (PSB) failure conditions. This
condition occurs when either an inconsistent APS byte or an invalid code is
detected.
Displays a count of far-end protection-line (FEPL) failure conditions. This
condition is declared based on receiving SF on the protection line in the K1
byte.
Displays the number of times a switchover has occurred.
Displays the time stamp of the last switchover.
Displays the cumulative Protection Switching Duration (PSD) time in
seconds.
For a working channel, this is the cumulative number of seconds that service
was carried on the protection line.
For the protection line, this is the cumulative number of seconds that the
protection line has been used to carry any working channel traffic. This
information is only valid if revertive switching is enabled.
Displays the number of times the signal was degraded.
Description (Continued)
— Traffic remains on the protection line until another
— When the condition that caused a switch to the
Interface Configuration
Page 627