3Com NETBuilder SI, SuperStack II manual Configuring Bandwidth-On-Demand

91

If you do not enter a telephone number for dial-string, the software uses the first number in the dial number list.

The dial string must be a number in the dial number list.

3Hang up the call using:

HangUp !<port> [-PORT]

Configuring Bandwidth-On-Demand

When the system detects traffic congestion on a port, you can enable bandwidth-on-demand to automatically activate more lines from a dial pool or from another path assigned to the same port.

You specify the bandwidth that a port should operate at normally, then define the maximum amount of bandwidth above this setting that the port can have.

Bandwidth-on-demand only works with dial-on-demand. To use bandwidth-on-demand, you must have multiple phone numbers in the dial number list. The first number is for the primary line. If you need more bandwidth, the port dials the second number in the list, then the following numbers in succession if required.

See “Working with Dial Number Lists” on page 113 for more information about dial number lists.

To configure bandwidth-on-demand, follow these steps:

1Enable bandwidth-on-demand and specify the amount of additional bandwidth to allocate for a port using:

SETDefault !<port> -PORT BODIncrLimit = <kbps>

The bridge/router allocates additional bandwidth in increments equal to the Kbps you specify. Maximum total bandwidth equals the BODIncrLimit plus the normal bandwidth.

2Specify the conditions that activate bandwidth-on-demand using:

SETDefault !<port> -PORT BODTHreshold = <%>(0–100)

The increase or decrease in bandwidth is based on a percentage of the outgoing traffic rate. Bandwidth is increased when the outgoing traffic rate exceeds the percentage of the current port bandwidth. Bandwidth is decreased when the rate of traffic runs below the specified percentage.

For example, normal available bandwidth is 64 Kbps and you set BODTHreshold to 50%. To activate another line, traffic would have to