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DES-7200 Configuration Guide Chapter 4 802.1x Configuration
4-35
The proxy server shielding function defines the Vendor type of 0x20, and the dial-up shielding
function defines the Vendor type of 0x21.
The Attribute-Specific field is a 4-byte manufacturer defined attribute, which defines the actions
taken against proxy server access and dial-up access. 0x0000 means normal connection,
without shielding detection. 0x0001 means shielding detection.
To shield the access via the proxy server, you should fill in the following information:
To shield the access via the dial-up connection, you should fill in the following information:
4.2.27 Configuring On-line Probe
on Client End
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 switch and RADIUS server. To meet the need to implement
accurate charging with few resources occupied, we use a new client on-line probe mechanism.
Such mechanism only needs interaction between the switch and client and occupies little
network traffic, and it implements minute-level charging accuracy (you can set the charging
accuracy).
Caution
To implement on-line client monitoring, the client software must support this
function.
The following two timers affect the performance and accuracy of on-line probe: