3Com 7700 Configuration Manual page 265

Perform the following configurations in RADIUS server group view.
Table 24 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 25 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 26 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
How to calculate the value of retry-times? Suppose that RADIUS server connection
will timeout in T and the real-time accounting interval of NAS is t, then the integer
part of the result from dividing T by t is the value of count. Therefore, when
applied, T is suggested the numbers which can be divided exactly by t.
By default, the real-time accounting request can fail to be responded no more
than 5 times.
Configuring the AAA and RADIUS Protocols
Command
timer realtime-accounting minute
undo timer realtime-accounting
Real-time accounting interval (minute)
3
6
12
15
Command
retry realtime-accounting retry-times
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