Nortel Networks 3500, NTRN10AN manual Performance Monitoring, Fibre Channel Extended Reach, Ses

Operation, administration, and maintenance (OAM) features 2-95

Performance Monitoring

Performance monitoring (PM) refers to the in-service, non-intrusive monitoring of transmission quality. The 2xGigE/FC-P2P circuit pack will support the PM counts shown in Table 2-19 on page 2-95. These counts will be monitored and binned for Ethernet and WAN signals.

Binning is supported for counts:

•15 minute (current and previous 32)

•1 day (current and previous)

•Untimed

Various counters are also binned:

•INFRAMES

•INFRAMESERR

•INFRAMESDISCDS

•OUTFRAMES

Table 2-19

Performance Monitoring Service counts

PM parameter	Ethernet and WAN Interface	Fibre Channel
ES	A second where at least one	A second where at least one
(Errored Seconds)	INFRAMESERR occurs	INOCTETERR occurs
SES	Seconds where	Seconds where
(Severely Errored Seconds)	INFRAMESERR/INFRAME > 0.01	INOCTETSERR > 500
UAS	Ten consecutive SES counts
(Unavailable Seconds)

Note: LAN PMs ES, SES, and UAS on the 2xGigE/FC-P2P do not count properly if defects are also present on the WAN port.

For additional information on 2xGigE/FC-P2P circuit pack, please refer to 2xGigabit Ethernet/Fibre Channel - Point-to-Point circuit pack on page 3-98.

Fibre Channel Extended Reach

Fibre Channel extended reach avoids throughput degradation for distances up to approximately 980 kilometers (kms) at full rate or about 18000 kilometers (kms) at sub-rate (STS1), see Figure 2-38 on page 2-96. For sub-rate, this means the ability to use 100% of the available WAN bandwidth.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004