Configuring On-Line Client Probe - D-Link xStack DGS-3610 Series Configuration Manual

Chapter 37 Configuration of 802.1X
Figure 37-10

37.2.25 Configuring On-line Client Probe

To ensure accurate charging, an on-line probe mechanism is needed to detect whether a
user is on-line within a short period. The re-authentication mechanism specified in the
standard can meet such needs, but it needs the participation of the RADIUS server. Accurate
user probe will occupy enormous resources of the device and RADIUS server. To meet the
need to implement accurate charging with fewer resources occupied, we use a new client
on-line probe mechanism. Such mechanism only needs interaction between the device and
client and occupies little network traffic, and it implements minute-level charging accuracy
(you can set the charging accuracy).
Caution
The following two timers affect the performance and accuracy of on-line probe:
Hello Interval: It is the interval at which the client sends an advertisement.

Alive Interval: Client online interval. If the device has not received the client

advertisement during this interval, it actively disconnects the client and notifies the
billing server. The interval must be greater than the Hello Interval.
In the privileged mode, you can configure the on-line probe function of the client through the
following steps:
Command
configure terminal
dot1x client-probe enable
dot1x probe-timer interval interval
dot1x probe-timer alive interval
end
write
37-30
To implement on-site monitoring of the client, the client software must
support this function.
DGS-3610 Series Configuration Guide
Function
Enter the global configuration mode.
Enable the on-line probe function of the client
Configure the Hello Interval
Configure the Alive Interval of the device.
Return to the privileged mode.
Save the configuration.