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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 8 Performance Monitoring
Performance Monitoring for Electrical Cards
Table 8-9 DS1 Transmit Path PMs for the DS1 and DS1N Cards
Parameter Definition
DS1 Tx AISS-P
Transmit Path Alarm Indication Signal (Tx AIS-P) means an alarm
indication signal occurred on the transmit end of the path. This parameter
is a count of seconds containing one or more AIS defects.
DS1 Tx CV-P
Transmit Path Code Violation (Tx CV-P) means a coding violation
occurred on the transmit end of the path. For DS1-ESF paths, this
parameter is a count of detected CRC-6 errors. For the DS1-SF paths, the
Tx CV-P parameter is a count of detected FEs.
DS1 Tx ES-P
Transmit Path Errored Seconds (Tx ES-P) is a count of the seconds
containing one or more anomalies and/or defects for paths on the transmit
end of the signal. For DS1-ESF paths, this parameter is a count of
one-second intervals containing one or more CRC-6 errors, or one or more
CS events, or one or more SEF or AIS defects. For DS1-SF paths, the Tx
ES-P parameter is a count of one-second intervals containing one or more
FE events, or one or more CS events, or one or more SEF or AIS defects.
DS1 Tx SAS-P
Transmit Path Severely Errored Seconds Frame/Alarm Indication Signal
(Tx SAS-P) is a count of one-second intervals containing one or more
SEFs or one or more AIS defects on the receive end of the signal.
DS1 Tx SES-P
Transmit Path Severely Errored Seconds (Tx SES-P) is a count of the
seconds containing more than a particular quantity of anomalies and/or
defects for paths on the transmit end of the signal. For the DS1-ESF paths,
this parameter is a count of seconds when 320 or more CRC-6 errors or
one or more SEF or AIS defects occurred. For DS1-SF paths, an SES is a
second containing either the occurrence of four FEs or one or more SEF
or AIS defects.
DS1 Tx UAS-P
Transmit Path Unavailable Seconds (Tx UAS-P) is a count of one-second
intervals when the DS1 path is unavailable on the transmit end of the
signal. The DS1 path is unavailable when ten consecutive SESs occur. The
ten SESs are included in unavailable time. Once unavailable, the DS1 path
becomes available when ten consecutive seconds occur with no SESs. The
ten seconds with no SESs are excluded from unavailable time.
Table 8-10 VT Path PMs for the DS1 and DS1N Cards
Parameter Definition
CV-V
Code Violation VT Layer (CV-V) is a count of the BIP errors detected at
the VT path layer. Up to two BIP 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 BIP error was detected. An AIS-V defect (or a lower-layer,
traffic-related, near-end defect) or an LOP-V defect can also cause an
ES-V.