3Com 8807 Configuration Manual page 251

Setting a Real-time
Accounting Interval
Setting the Maximum
Times of Real-time
Accounting Request
Failing to be Responded
Perform the following configuration in RADIUS scheme view.
Table 216 Enable the selection of RADIUS accounting option
Operation
Enable the selection of RADIUS accounting option
Disable the selection of RADIUS accounting option
By default, selection of RADIUS accounting option is disabled.
To implement real-time accounting, it is necessary to set a real-time accounting
interval. After the attribute is set, NAS will transmit the accounting information of
online users to the RADIUS server regularly.
You can use the following command to set a real-time accounting interval.
Perform the following configuration in RADIUS scheme view.
Table 217 Set a real-time accounting interval
Operation
Set a real-time accounting interval
Restore the default value of the interval
minute specifies the real-time accounting interval in minutes. The value shall be a
multiple of 3.
The value of minute is related to the performance of NAS and RADIUS server. The
smaller the value is, the higher the performances of NAS and RADIUS are required.
When there are a large amount of users (more than 1000, inclusive), we suggest a
larger value. The following table recommends the ratio of minute value to the
number of users.
Table 218 Recommended real-time accounting intervals for different number of users
Number of users
1 to 99
100 to 499
500 to 999
Š1000
By default, minute is set to 12 minutes.
RADIUS server usually checks if a user is online with timeout timer. If the RADIUS
server has not received the real-time accounting packet from NAS for long, it will
consider that there is device failure and stop accounting. Accordingly, it is
necessary to disconnect the user at NAS end and on RADIUS server synchronously
when some unpredictable failure exists. 3Com Series Switches support to set
maximum times of real-time accounting request failing to be responded. NAS will
disconnect the user if it has not received real-time accounting response from
RADIUS server for some specified times.
Configuring RADIUS Protocol
Command
accounting optional
undo accounting optional
Command
timer realtime-accounting minute
undo timer realtime-accounting
Real-time accounting interval in minutes
3
6
12
Š15
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