Datasheet

15-39
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.7.5 MRC-12 Card Performance Monitoring Parameters
Note If the MS-EB(NE and FE) falls in a specific range, then, the user might see discrepancy in the MS-SES
and the MS-UAS values. However, MS-ES will be in the nearest accuracy. For a few seconds, in a given
10 seconds interval, the number of MS-EB counted may not cross the EB count criteria for MS-SES,
(due to system/application limitation for the below mentioned ranges); as a consequence of which there
may not be 10 continuous MS-SES, thus MS-UAS will not be observed. The corresponding (error) range
for the line rates is as shown in Table 15-20.
15.7.5 MRC-12 Card Performance Monitoring Parameters
This section lists performance monitoring parameters for the mutirate card, also known as the MRC-12.
card.
Figure 15-15 shows where overhead bytes detected on the ASICs produce performance monitoring
parameters for the MRC-12 card.
Table 15-20 Table of Border Error Rates
Line Rate Error Ranges
STM1 28800-28810
STM4 192000-192010
STM16 921600-921610
STM64 3686400-3686410