Datasheet

15-5
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.4 Performance Monitoring Parameter Definitions
Table 15-3 Performance Monitoring Parameters
Parameter Definition
AISS-P AIS Seconds Path (AISS-P) is a count of one-second intervals containing
one or more alarm indication signal (AIS) defects.
BBE Path Background Block Error (BBE) is an errored block not occurring as
part of a severely errored second (SES).
BBE-PM Path Monitoring Background Block Errors (BBE-PM) indicates the
number of background block errors recorded in the optical transfer
network (OTN) path during the PM time interval.
BBER Path Background Block Error Ratio (BBER) is the ratio of BBE to total
blocks in available time during a fixed measurement interval. The count of
total blocks excludes all blocks during SESs.
BBER-PM Path Monitoring Background Block Errors Ratio (BBER-PM) indicates the
background block errors ratio recorded in the OTN path during the PM
time interval.
BBER-SM Section Monitoring Background Block Errors Ratio (BBER-SM) indicates
the background block errors ratio recorded in the OTN section during the
PM time interval.
BBE-SM Section Monitoring Background Block Errors (BBE-SM) indicates the
number of background block errors recorded in the optical transport
network (OTN) section during the PM time interval.
BIE The number of bit errors (BIE) corrected in the dense wavelength division
multiplexing (DWDM) trunk line during the PM time interval.
BIEC The number of Bit Errors Corrected (BIEC) in the DWDM trunk line
during the PM time interval.
CGV Code Group Violations (CGV) is a count of received code groups that do
not contain a start or end delimiter.
CVCP-P Code Violation Path (CVCP-P) is a count of CP-bit parity errors occurring
in the accumulation period.
CVCP-PFE Code Violation (CVCP-PFE) is a parameter that is counted when the three
far-end block error (FEBE) bits in a M-frame are not all collectively set
to 1.
CV-L Code Violation Line (CV-L) indicates the number of coding violations
occurring on the line. This parameter is a count of BPVs and EXZs
occurring over the accumulation period.
CVP-P Code Violation Path (CVP-P) is a code violation parameter for M23
applications. CVP-P is a count of P-bit parity errors occurring in the
accumulation period.
DCG Date Code Groups (DCG) is a count of received data code groups that do
not contain ordered sets.
EB Path Errored Block (EB) indicates that one or more bits are in error within
a block.
ES Path Errored Second (ES) is a one-second period with one or more errored
blocks or at least one defect.