Cisco BPX-BXM-155-8DX Installation And Configuration Manual page 486

APS Alarms
Table 28-2 APS Alarms (continued)
Class
Clear
Clear
Minor APS Lines looped
Minor APS Remote Signal
Minor APS Channel Mismatch Can only happen in bidirectional mode and indicates that there
Minor APS Protection Switch
Minor APS Far End Protection
Minor APS Architecture
Info
Info
Info
Info
Info
Info
Info
Cisco BPX 8600 Series Installation and Configuration
28-4
Name
APS OK
APS Deactivated
Failure
Byte Failure
Failure
Mismatch
APS Init/Clear/Revert
Cannot perform a
Clear/Revert switch
APS Manual switch
Cannot perform a
Manual switch
APS Signal Degrade
LoPri switch
Cannot perform a Signal
Degrade LoPri switch
APS Signal Degrade
HiPri switch
Description
APS line is up with no alarms.
APS line is down.
APS line is looped.
A remote signal failure indicates that there is a problem with the
far end signalling information in the K1K2 bytes.
is a problem with the underlying APS channel protocol. The
receive K2 channel number does not equal the transmit K1
channel number.
Protection Switch Byte failure or PSB. In bidirectional mode
indicates that there is an invalid K1 byte. The receive K1 request
does not match the reverse request and is less than the transmit
K1 request. In all modes a PSB alarm indicates that K1/K2
protocol is not stable.
Far end protection failure indicates that the far end's protection
line is failing. When there is Signal Failure on the protection
channel, the remote end sees Far End Protection Fail.
Architecture mismatch means that the APS configuration on one
end of the line does not match the APS configuration at the other
side of the line. Specifically GR-253 at one end and ITUT at the
other or 1+1 at one end and 1:1 at the other.
A BXM APS event indicating that the BXM APS has been
initialize or a clear switch has occurred or a revert switch has
occurred.
A BXM APS event indicating that the BXM APS was unable to
perform a clear or revertive switch.
A BXM APS event indicating that the BXM APS
has performed a user requested manual switch.
A BXM APS event indicating that the BXM APS
was unable to perform a user requested manual switch.
A BXM APS event indicating that the BXM APS
performed a switch due to a low priority signal degrade
condition. An automatically initiated switch due to a "soft
failure" condition resulting from the line BER exceeding a
pre-selected threshold (cnfapsln).
A BXM APS event indicating that the BXM APS
was unable to perform a switch due to a low priority signal
degrade condition.
A BXM APS event indicating that the BXM APS performed a
switch due to a high priority signal degrade condition. An
automatically initiated switch due to a "soft failure" condition
resulting from the line BER exceeding a pre-selected threshold
(cnfapsln).
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 28 Alarms and Statistics