3Com 7700 Configuration Manual page 202

194 C 9: AAA
HAPTER AND
RADIUS O
PERATION
Setting a Real-time Accounting Interval
To implement this feature, 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.
Perform the following configurations in RADIUS server group view.
Table 23 Set a Real-Time Accounting Interval
Operation
Set a real-time accounting
interval
Restore the default value of
the interval
The minute variable pecifies the real-time accounting interval in minutes. The value
must 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 24 Recommended Ratio of Minute to Number of Users
Number of users
1 to 99
100 to 499
500 to 999
1000
By default, minute is set to 12 minutes.
Setting Maximum Times of Real-time Accounting Request
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
considers that there is device failure and stop accounting. Accordingly, it may be
necessary to disconnect the user at NAS end and on RADIUS server when some
unpredictable failure exists. The Switch 7700 supports setting the maximum times
of real-time accounting request failing to be responded. NAS disconnects the user
if it has not received real-time accounting response from RADIUS server for some
specified times.
Perform the following configurations in RADIUS server group view.
Table 25 Set Maximum Times of Real-Time Accounting Request Failing to be Responded
Operation
Set maximum times of
real-time accounting request
failing to be responded
Command
timer realtime-accounting minute
undo timer realtime-accounting
Real-time accounting interval (minute)
3
6
12
15
Command
retry realtime-accounting retry-times