H3C S5600 Series Operation Manual page 570

When the switch fails to communicate with the primary server due to some server trouble, the switch
will turn to the secondary server and exchange messages with the secondary server.
After the primary server remains in the block state for a specific time (set by the timer quiet command),
the switch will try to communicate with the primary server again when it has a RADIUS request. If it
finds that the primary server has recovered, the switch immediately restores the communication with
the primary server instead of communicating with the secondary server, and at the same time restores
the status of the primary server to active while keeping the status of the secondary server unchanged.
To control the interval at which users are charged in real time, you can set the real-time accounting
interval. After the setting, the switch periodically sends online users' accounting information to RADIUS
server at the set interval.
Follow these steps to set timers for RADIUS servers:
To do...
Enter system view
Create a RADIUS scheme and
enter its view
Set the response timeout time of
RADIUS servers
Set the time that the switch waits
before it try to re-communicate with
primary server and restore the
status of the primary server to
active
Set the real-time accounting
interval
Enabling Sending Trap Message when a RADIUS Server Goes Down
Follow these steps to specify to send trap message when a RADIUS server goes down:
To do...
Enter system view
Enable the sending of trap
message when a RADIUS
server is down
Use the command...
system-view
radius scheme
radius-scheme-name
timer response-timeout
seconds
timer quiet minutes
timer realtime-accounting
minutes
Use the command...
system-view
radius trap
{ authentication-server-down |
accounting-server-down }
2-21
Remarks
—
Required
By default, a RADIUS scheme named
"system" has already been created in
the system.
Optional
By default, the response timeout time
of RADIUS servers is three seconds.
Optional
By default, the switch waits five
minutes before it restores the status
of the primary server to active.
Optional
By default, the real-time accounting
interval is 12 minutes.
Remarks
—
Optional
By default, the switch does not
send trap message when a
RADIUS server is down.