Datasheet

15-14
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.5 Performance Monitoring for Electrical Cards
15.5 Performance Monitoring for Electrical Cards
The following sections define performance monitoring parameters for the E1-N-14, E1-42, E3-12, and
DS3i-N-12 electrical cards.
15.5.1 E1-N-14 Card and E1-42 Card Performance Monitoring Parameters
Figure 15-2 shows the signal types that support near-end and far-end PM parameters for the E1-N-14
card and the E1-42 card.
Figure 15-2 Monitored Signal Types for the E1-N-14 Card and E1-42 Card
Figure 15-3 shows where overhead bytes detected on the application-specific integrated circuits (ASICs)
produce performance monitoring parameters for the E1-N-14 card.
UASP-P Unavailable Second Path (UASP-P) is a count of one-second intervals
when the DS-3 path is unavailable. A DS3 path becomes unavailable when
ten consecutive SESP-Ps occur. The ten SESP-Ps are included in
unavailable time. After the DS-3 path becomes unavailable, it becomes
available when ten consecutive seconds with no SESP-Ps occur. The ten
seconds with no SESP-Ps are excluded from unavailable time.
UAS-SM Section Monitoring Unavailable Seconds (UAS-SM) indicates the
unavailable seconds recorded in the OTN section during the PM time
interval.
UNC-WORDS The number of uncorrectable words detected in the DWDM trunk line
during the PM time interval.
VPC A count of received packets that contain non-errored data code groups that
have start and end delimiters.
1. 4-fiber MS-SPRing is not supported on the STM-4 and STM4 SH 1310-4 cards; therefore, the MS-PSC-S and MS-PSC-R PM
parameters do not increment.
Table 15-3 Performance Monitoring Parameters (continued)
Parameter Definition
71101
ONS 15454
SDH
E1 STM16
Fiber
Near End
E1 Signal
CRC4 Framing Path PMs Near + Far End Supported
ONS 15454
SDH
E1STM16
Far End
E1 Signal
VC-12 Low-Order Path PMs Near End Supported