Cisco ONS 15454 SDH User Manual page 39

Chapter 15 Performance Monitoring
Table 15-42 Protection Switch Count PM Parameters for the Near-End STM-16
Parameter
MS-PSC-W
MS-PSD-W
MS-PSC-S
MS-PSD-S
MS-PSC-R
MS-PSD-R
Table 15-43 High-Order VC4 and VC4-Xc Path PM Parameters for the STM-16
Parameter
Note
HP-EB
April 2008
and STM-64 Cards (continued)
Definition
For a working line in a two-fiber MS-SPRing, Multiplex Section
Protection Switching Count-Working (MS-PSC-W) is a count of the
number of times traffic switches away from the working capacity in the
failed line and back to the working capacity after the failure is cleared.
MS-PSC-W increments on the failed working line and MS-PSC
increments on the active protect line.
For a working line in a four-fiber MS-SPRing, MS-PSC-W is a count of
the number of times service switches from a working line to a protection
line plus the number of times it switches back to the working line.
MS-PSC-W increments on the failed line and MS-PSC-R or MS-PSC-S
increments on the active protect line.
For a working line in a two-fiber MS-SPRing, Multiplex Section
Protection Switching Duration-Working (MS-PSD-W) is a count of the
number of seconds that service was carried on the protection line.
MS-PSD-W increments on the failed working line and MS-PSD
increments on the active protect line.
In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Count-Span (MS-PSC-S) is a count of the number of times service
switches from a working line to a protection line plus the number of times
it switches back to the working line. A count is only incremented if span
switching is used.
In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Duration-Span (MS-PSD-S) is a count of the seconds that the protection
line was used to carry service. A count is only incremented if span
switching is used.
In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Count-Ring (MS-PSC-R) is a count of the number of times service
switches from a working line to a protection line plus the number of times
it switches back to a working line. A count is only incremented if ring
switching is used.
In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Duration-Ring (MS-PSD-R) is a count of the seconds that the protection
line was used to carry service. A count is only incremented if ring
switching is used.
and STM-64 Cards
Definition
SDH path PM parameters do not increment unless IPPM is enabled. See the
"15.2 Intermediate-Path Performance Monitoring" section on page
feature is not supported on the STM-16 and STM-64 cards. However, SDH path PM parameters
can be monitored by logging into the far-end node directly.
High-Order Path Errored Block (HP-EB) indicates that one or more bits
are in error within a block.
15.6.4 STM-16 and STM-64 Card Performance Monitoring Parameters
Cisco ONS 15454 SDH Reference Manual, R4.6
15-2. The far-end IPPM
15-39