Description:
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apsNearEndRequest OBJECT-TYPE
SYNTAX INTEGER {
noRequest(0),
doNotRevert(1),
reverseRequest(2),
waitToRestore(6),
manualSwitch(8),
signalDegrade(10),
signalFail(12),
forcedSwitch(14),
lockoutOfProtection(15) }
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This attribute indicates the request currently being transmitted to the
far end in the SONET/SDH line overhead K1 byte of the protection
line. Requests are prioritized so that high priority requests preempt
or block those with a lower priority. The possible requests, in order
of priority from highest to lowest, are as follows.
lockoutOfProtection the working line is prevented from
switching to the protection line under any circumstances due to an
ProtectionLockout command being in effect.
forcedSwitch the line indicated by attribute
nearEndRequestChannel has a Switch -force command in effect
against it. Note that a signalFail on the protection line has higher
priority than a forcedSwitch.
signalFail the line indicated by attribute
nearEndRequestChannel is experiencing a signal failure (SF).
Failures include LOS, LOF, received AIS-L, a signal BER
exceeding 10-3, LOP, received AIS-P, LCD, or a locked Sonet, Sdh,
or Path component. Note that a signalFail on the protection line
has higher priority than a forcedSwitch.
signalDegrade the line indicated by attribute
nearEndRequestChannel is experiencing a signal degradation (SD).
For more information on the conditions required to declare and
clear an SD please refer to the desription for attribute
signalDegradeRatio.
A such that the signal BER exceeds the value provisioned in the
signalDegradeRatio attribute, or is still exceeding
manualSwitch the line indicated by attribute
nearEndRequestChannel has a Switch command in effect against it.
waitToRestore the protection line is active, provisioned attribute
revertive is yes, and the working line has recovered from a Signal
Fail or Signal Degrade. After the period defined by attribute
waitToRestorePeriod the working line will automatically revert to
being the receive active line and the request will change to
noRequest.
reverseRequest the line indicated by attribute
nearEndRequestChannel is active due to a request from the far end.
This request is only applicable when the provisioned mode is
bidirectional.
doNotRevert the protection line is active, provisioned attribute
revertive is no, and either: (1) the working line has recovered from
a signalFail or signalDegrade; or (2) a forcedSwitch or
manualSwitch request has been cleared. The receive active line will
not automatically revert to the working line.
noRequest the working line is active and no other requests are in
effect."
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iso(1)
