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Chapter 15
Performance Monitoring
Table 15-3
Parameter
ESR-SM
ES-S
ES-SM
ES-V
FC-L
FC-P
FC-PFE
FC-PM
FC-SM
IOS
IPC
LBCL-MIN
LBCL-AVG
LBCL-MAX
78-18106-01
Performance Monitoring Parameters (continued)
Definition
Section Monitoring Errored Seconds Ratio (ESR-SM) indicates the
errored seconds ratio recorded in the OTN section during the PM time
interval.
Section Errored Seconds (ES-S) is a count of the number of seconds when
at least one section-layer BIP error was detected or an SEF or loss of
signal (LOS) defect was present.
Section Monitoring Errored Seconds (ES-SM) indicates the errored
seconds recorded in the OTN section during the PM time interval.
Errored Seconds VT Layer (ES-V) is a count of the seconds when at least
one VT Path BIP error was detected. An AIS Virtual Tributary (VT)
(AIS-V) defect (or a lower-layer, traffic-related, near-end defect) or an
LOP VT (LOP-V) defect can also cause an ES-V.
Line Failure Count (FC-L) is a count of the number of near-end line
failure events. A failure event begins when an AIS Line (AIS-L) failure is
declared or when a lower-layer, traffic-related, near-end failure is
declared. This failure event ends when the failure is cleared. A failure
event that begins in one period and ends in another period is counted only
in the period where it begins.
Near-End STS Path Failure Counts (FC-P) is a count of the number of
near-end STS path failure events. A failure event begins when an AIS-P
failure, an LOP-P failure, a UNEQ-P failure, or a Section Trace Identifier
Mismatch Path (TIM-P) failure is declared. A failure event also begins if
the STS PTE that is monitoring the path supports Three-Bit (Enhanced)
Remote Failure Indication Path Connectivity (ERFI-P-CONN) for that
path. The failure event ends when these failures are cleared.
Far-End STS Path Failure Counts (FC-PFE) is a count of the number of
near-end STS path failure events. A failure event begins when an AIS-P
failure, an LOP-P failure, a UNEQ-P failure, or a TIM-P failure is
declared. A failure event also begins if the STS PTE that is monitoring the
path supports ERFI-P-CONN for that path. The failure event ends when
these failures are cleared.
Path Monitoring Failure Counts (FC-PM) indicates the failure counts
recorded in the OTN path during the PM time interval.
Section Monitoring Failure Counts (FC-SM) indicates the failure counts
recorded in the OTN section during the PM time interval.
Idle Ordered Sets (IOS) is a count of received packets containing idle
ordered sets.
Invalid Packets (IPC) is the count of received packets that contain errored
data code groups that have start and end delimiters.
Laser Bias Current Line—Minimum (LBCL-MIN) is the minimum
percentage of laser bias current.
Laser Bias Current Line—Average (LBCL-AVG) is the average
percentage of laser bias current.
Laser Bias Current Line—Maximum (LBCL-MAX) is the maximum
percentage of laser bias current.
15.4 Performance Monitoring Parameter Definitions
Cisco ONS 15454 Reference Manual, R8.5
15-7
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