Black Box LRS002A-R2, LRA005A-R2, LRA001A-R2 How to Limit Line Use, Dialup interface quota mins

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER USER’S MANUAL

B.1.4 SET UP AN EXCESSIVE-USE WARNING (IP NETWORKS ONLY)

You can configure the Router to send warnings during the day when more than a specified amount of time is used for outgoing calls on a given interface. First turn syslog on. From tcp/ip mode, enter

syslog on

Next enter the dialup warning command:

dialup interface warning mins

Whenever you have used more than mins minutes of time for outgoing calls in one day, a syslog message like this is sent to the syslog host and to the console:

router1 modem0 High usage, more than 240 minutes used today

In the example, the display indicates that the Router named router1 has placed more than 4 hours (240 minutes) of calls using the modem0 interface.

You can display the current warning setting by entering:

dialup interface warning

The default dialup quota for a WAN interface (modem, sync) is 24 hours per day, or 1140 minutes. Refer to the dialup command in Section 2.9 of the Reference Manual, which starts on page 137.

B.2 How to Limit Line Use

If the Router’s line use is excessive for an interface, you may want to limit it until you can determine the cause. Three methods are available:

•Set a dialup-time quota for that interface

•Use IP and IPX dial filters on that interface

•Use the Router link optimization suite of filters (NLO)

B.2.1 SET A DIALUP TIME QUOTA FOR THAT INTERFACE

To restrict the outgoing dialup-line use by all hosts to a time quota limit, use the dialup quota command. This command limits the amount of outgoing calls to mins minutes per day. Enter:

dialup interface quota mins

Because incoming calls are not listed on your phone bill, they are not monitored. At midnight each night the quota is reset back to mins minutes for another 24-hour period. By default, the quota is set to 1440 minutes (24 hours)—in other words, no quota at all. If you desire a smaller dialup quota, create one using the dialup quota command.

When the quota on an interface interface is reached, any current connection is dropped and cannot be renewed until the quota is reset, either automatically at midnight or by issuing another dialup quota command. In addition, the following syslog message is sent to the syslog host and to the console:

router1 modem0 Dropping link, time quota of 480 minutes exceeded

After this time, data packets received at this interface are discarded, and the following syslog message is sent to the syslog host and to the Router’s console:

router1 modem0 Can’t dial, time quota of 480 minutes exceeded

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