3com 5500-SI Manual Do Utilizador

User Re-authentication at Reboot 429

After RADIUS (authentication/authorization or accounting) request packet has been 
transmitted for a period of time, if NAS has not received the response from the 
RADIUS server, it has to retransmit the request to guarantee RADIUS service for the 
user. 

You can use the following command to set response timeout timer of RADIUS server. 

Perform the following configurations in RADIUS Scheme View. 

Table 466   Setting the Response Timeout Timer of the RADIUS Server

By default, timeout timer of RADIUS server is 3 seconds.

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 configurations in RADIUS Scheme View. 

Table 467   Setting a Real-time Accounting Interval

 specifies the real-time accounting interval in minutes. The value should be a 

multiple of 3. 

The value of 

 is related to the performance of NAS and RADIUS server. The 

smaller the value, the higher the performances of NAS and RADIUS that are required. 
When there are a large amount of users (more than 1000, inclusive), 3Com suggests 
a larger value. Table 468 recommends the ratio of 

 value to the number of 

users. 

Table 468   Recommended Ratio of Minute to Number of Users

By default, 

 is set to 12 minutes.

Set response timeout timer of RADIUS server

 second

Restore the response timeout timer of RADIUS server to default value

Set a real-time accounting interval

 minute

Restore the default value of the interval

1 to 99

3

100 to 499

6

500 to 999

12

1000

15