Setting Bandwidth-On-Demand; Setting Filters; Input Filters; Output Filters - Lucent Technologies PortMaster 4 Configuration Manual

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Setting Bandwidth-on-Demand

The bandwidth-on-demand feature provides a way to specify a point at which the

PortMaster establishes an additional line to a location. You use the high_water

keyword to specify the number of bytes of network traffic that must be queued before

the PortMaster opens an additional connection. The PortMaster examines the queue

several times a minute to determine if the high-water mark has been reached.

If you set a very low threshold number, the PortMaster quickly opens the maximum

number of ports you specify for this location. When selecting a threshold, bear in mind

that interactive traffic from login users queues a relatively small number of bytes—only

several hundred—while network users doing file transfers can queue several thousand

bytes of traffic.

This high-water value is used only when the maximum number of ports is greater than

one. The default high-water mark is 0 (zero).

To set the high-water mark in bytes for a location, use the following command:

Command> set location Locname high_water Number

Setting Filters

You can attach input and output filters to each location. Filters must be defined in the

filter table before they can be added to the location table. For more information about

filters, see Chapter 8, "Configuring Filters." When a filter is changed, all ports in use by

the location must be reset to have the changes take effect.

Note – If a matching filter name is not found in the filter table, this command is not

effective and all traffic is permitted.

Input filters cause all packets received from the interface to be evaluated against the

filter rule set. Only packets allowed by the filter are accepted.

To set an input filter for a location, use the following command:

Command> set location Locname ifilter Filtername

Output filters cause all packets going out to the interface to be evaluated against the

filter rule set. Only packets allowed by the filter are passed out to the interface.

To set an output filter for a location, use the following command:

Command> set location Locname ofilter Filtername

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PortMaster 4 Configuration Guide

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