Enterasys Networks CSX6000 - Manual (Page 367)

Central Site Remote Access Switch 367
C ONFIGURING C ALL C ONTROL
Throughput Monitor
T HROUGHPUT M ONITOR C ONFIGURATION E LEMENTS
S AMPLE R ATE
A Sample Rate identifies the number of seconds for each sample period. The default setting for the
sample rate is 5 seconds. During this period, the system keeps track of the total number of bytes
that is transferred in both directions between two systems. The utilization percentage is determined
by comparing this total with the realistic maximum for the current aggregate amount of
bandwidth.
O VERLOAD T RIGGER N UMBER
The number of samples within the window that must exceed the specified utilization for the
OVERLOAD condition to occur.
O VERLOAD W INDOW S IZE
The number of sample periods (up to 32) that you should use as the sliding window.
O VERLOAD P ERCENT U TILIZATION
The percentage of the available bandwidth that the traffic samples must exceed for an overload
condition to occur.
U NDERLOAD T RIGGER N UMBER
The number of samples within the window that must be below the next lowest target capacity for
the UNDERLOAD condition to occur.
U NDERLOAD W INDOW S IZE
The number of sample periods (up to 32) that you should use as the sliding window.
I DLE T RIGGER N UMBER
The number of samples within the window that must be below the specified utilization for the
IDLE condition to occur.
I DLE W INDOW S IZE
The number of sample periods (up to 32) that you should use as the sliding window.
I DLE P ERCENT U TILIZATION
The percentage of available bandwidth on the last connection that traffic samples must fall below
for the connection to be considered IDLE.
Note: The system monitors for the IDLE condition when only one connection to a site exists, and
that connection is a switched connection.
T HROUGHPUT M ONITOR B ACKGROUND I NFORMATION
A powerful feature of the CyberSWITCH is its ability to add and drop calls depending on the
amount of WAN traffic. If no information is being sent, the call will be terminated. The system will
also make additional calls to a site if it is determined that extra bandwidth is needed.
The Bandwidth Management feature works by sampling the amount of data that is transmitted and
received on the connections between two units. Each sample is compared to the levels associated
with the different conditions. The results of these comparisons are kept in a sliding window. The
window size, number of samples that trigger an event, and sampling frequency are configurable.