Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 367)

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Central Site Remote Access Switch 367

ONFIGURING

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Throughput Monitor

THROUGHPUT MONITOR CONFIGURATION ELEMENTS

SAMPLE RATE

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.

VERLOAD TRIGGER NUMBER

The number of samples within the window that must exceed the specified utilization for the

OVERLOAD condition to occur.

VERLOAD WINDOW SIZE

The number of sample periods (up to 32) that you should use as the sliding window.

VERLOAD PERCENT UTILIZATION

The percentage of the available bandwidth that the traffic samples must exceed for an overload

condition to occur.

NDERLOAD TRIGGER NUMBER

The number of samples within the window that must be below the next lowest target capacity for

the UNDERLOAD condition to occur.

NDERLOAD WINDOW SIZE

The number of sample periods (up to 32) that you should use as the sliding window.

DLE TRIGGER NUMBER

The number of samples within the window that must be below the specified utilization for the

IDLE condition to occur.

DLE WINDOW SIZE

The number of sample periods (up to 32) that you should use as the sliding window.

DLE PERCENT UTILIZATION

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.

THROUGHPUT MONITOR BACKGROUND INFORMATION

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.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 367

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