Digi TransPort User Manual page 168

Advanced Interfaces parameters
Limit the data transmitted over this interface
Some service providers impose a (usually monthly) limit on the amount of data sent over a link
and levy additional charges if the limit is exceeded. This is fairly common practice for W-WAN
links. When checked, this checkbox causes the router to stop sending data on the interface
when the preset data limit has been exceeded. The interface is unlocked manually by clicking
the Clear Total Data Transferred button on the Management – Network Status >
Interfaces > Advanced > PPP > PPP n page. Alternatively, it may be reset automatically on a
certain day of the month.
Issue a warning event after n Kbytes/Mbytes/GBytes
The value in this text box is the amount of traffic which will cause a warning event to be
generated in the event log stating that the specified amount of data has been transferred. The
units are specified by a drop-down list, having the following options; KBytes, MBytes, GBytes.
For example, if the monthly tariff includes up to 5MB of data before excess useage charges
are levied, it would be useful to set this threshold to 4MB. This would cause the router to
create a warning entry in the event log once 4MB of data had been transferred. This event
could then be used to trigger an email alert, SNMP trap or SMS alert message.
Stop data from being transmitted after n Kbytes/Mbytes/GBytes
The value in this text box specifies the total amount of data that may be transmitted by this
PPP instance before the link is blocked for further traffic, and the value in the drop-down list
specifies the units which are; KBytes, MBytes, GBytes.
Reset the data limit on the n day of the month
The value in this text box defined the day of the month on which the data limit is reset to zero.
When the link disconnects, indicate that the connection failed if no IP packets were received
Reset this interface if n packets are transmitted and the connection has been up for at least s
seconds
The values in these text boxes control the circumstances under which the link may be reset. If
the number of packets text box has a value greater than zero, the router will reset the link if
Digi TransPort User Guide 168