3Com Switch 7750 Configuration Guide Guide

RADIUS Configuration 509
Configuring the Timers
of RADIUS Servers
If the switch gets no response from the RADIUS server after sending out a RADIUS
request (authentication/authorization request or accounting request) and waiting
for a period of time, it should retransmit the packet to ensure that the user can
obtain the RADIUS service. This wait time is called response timeout time of
RADIUS servers; and the timer in the switch system that is used to control this wait
time is called the response timeout timer of RADIUS servers.
For the primary and secondary servers (authentication/authorization servers, or
accounting servers) in a RADIUS scheme:
When the switch fails to communicate with the primary server due to some server
trouble, the switch will actively exchange packets with the secondary server.
After the time the primary server keeps in the block state exceeds the time set
with the timer quiet command, the switch will try to communicate with the
primary server again when it has a RADIUS request. If the primary server recovers,
the switch immediately restores the communication with the primary server
instead of communicating with the secondary server, and at the same time
restores the primary server to the active state while keeping the state of the
secondary server unchanged.
To charge the users in real time, you should set the interval of real-time
accounting. After the setting, the switch sends the accounting information of
online users to the RADIUS server at regular intervals.
Configuring the User
Re-Authentication upon
Device Restart Function
n
The function applies to the environment where the RADIUS
authentication/accounting server is CAMS.
Table 391 Set the timers of RADIUS server
Operation Command Description
Enter system view system-view -
Create a RADIUS scheme and
enter its view
radius scheme
radius-scheme-name
Required
By default, a RADIUS scheme
named "system" has already
been created in the system.
Set the response timeout time
of RADIUS servers
timer response-timeout
seconds
Optional
By default, the response
timeout timer of RADIUS
servers expires in three
seconds.
timer seconds
Set the wait time for the
primary server to restore the
active state
timer quiet minutes
Optional
By default, the primary server
waits five minutes before
restoring the active state.
Set the real-time accounting
interval
timer realtime-accounting
minutes
Optional
By default, the real-time
accounting interval is 12
minutes.