Cisco ONS 15327, User Documentation

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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Electrical Cards
Table 8-6 VT Path PMs for the XTC DS1 Cards
Parameter Definition
CV-V
Code Violation VT Layer (CV-V) is a count of the B IP errors detected at
the VT path layer. Up to two B IP errors can be detected per VT
superframe, with each error incrementing the current CV-V second
register.
ES-V Errored Seconds VT Layer (ES-V) is a count of the seconds when at least
one VT Path B IP error was detected. An Alarm Indication Signal VT
Layer (AIS-V) defect (or a lower-layer, traffic-related, near-end defect) or
a Loss of Pointer VT layer (LOP-V) defect can also cause an ES-V.
SES-V Severely Errored Seconds VT Layer (SES-V) is a count of seconds when
K (600) or more VT Path B IP errors were detected. SES-V can also be
caused by an Alarm Indication Signal VT Layer (AIS-V) defect (or a
lower-layer, traffic-related, near-end defect) or a Loss of Pointer VT layer
(LOP-V) defect.
UAS-V
Unavailable Second VT Layer (UAS-V) is a count of the seconds when
the VT path is considered unavailable. A VT path becomes unavailable at
the onset of ten consecutive seconds that qualify as Severely Errored
Seconds VT Layer (SES-Vs), and continues to be unavailable until the
onset of ten consecutive seconds occur that do not qualify as SES-Vs.
Table 8-7 Far-End VT Path PMs for the XTC DS1 Card
Parameter Definition
CV-VFE Far-End VT Path Coding Violations (CV-VFE) is a count of the number
of B IP errors detected by the far-end VT path-terminating equipment
(PTE) and reported back to the near-end VT PTE using the REI-V
indication in the VT path overhead. Only one B IP error can be indicated
per VT superframe using the REI-V bit. The current CV-VFE second
register is incremented for each B IP error indicated by the incoming
REI-V.
ES-VFE Far-End VT Path Errored Seconds (ES-VFE) is a count of the seconds
when at least one VT path B IP error was reported by the far-end VT PTE,
or a one-bit RDI-V defect was present.
SES-VFE Far-End VT Path Severely Errored Seconds (SES-VFE) is a count of the
seconds when K (600) or more VT path B IP errors were reported by the
far-end VT PTE or a one-bit RDI-V defect was present.
UAS-VFE Far-End VT Path Unavailable Seconds (UAS-VFE) is a count of the
seconds when the VT path is unavailable at the far-end. A VT path is
considered unavailable at the onset of ten consecutive seconds that qualify
as Far-End VT Path Severely Errored Seconds (SES-VFEs), and continues
to be considered unavailable until the onset of 10 consecutive seconds that
do not qualify as SES-VFEs.