UAS One second which is contained within an
Unavailable Period (UAP). An UAS is not
counted as ES or SES.
BiDirUAS
Represents the number of seconds for
which the link was unavailable in a period
(24hr) for directional monitoring.
biDirUAS is counted separately from UAS
as it relates to both near and far end data.
BiDirUAPcount
Represents the number of times the link
was unavailable in a period (24hrs) for
bidirectional monitoring.
Ethernet measurement parameters
Since SDH uses STM-n signals and that LAN uses packets, we cannot use the same
parameters to monitor performance in both cases. Therefore, LAN monitoring uses the
following parameters:
The parameters and associated link are the following:
LAN Measurement
Parameters
Link
CbR
Kilobytes Received from Ethernet to LAN port or
from SDH to WAN port
CbS
Kilobytes Sent from LAN port to Ethernet or from
WAN port to SDH
pDe
Packets dropped. These packets are received from
Ethernet to LAN port and dropped by LAN port or
received from SDH to WAN port and dropped by
WAN port.
Other related parameters
There are other related performance parameters which, although not directly measured
nor displayed on the ITM CIT, are taken into consideration during processing of
performance data.
Performance monitoring
Available PM data
....................................................................................................................................................................................................................................
10-28
Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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