HP 6600 Security Configuration Manual page 49

Step
1. Enter system view.
2. Specify a backup source IP
address for outgoing RADIUS
packets.
To specify a backup source IP address for a RADIUS scheme:
Step
1. Enter system view.
2. Enter RADIUS scheme view.
3. Specify a backup source IP address
for outgoing RADIUS packets.
The backup source IP address specified for outgoing RADIUS packets takes effect only when stateful
failover is configured, and it must be the source IP address for outgoing RADIUS packets that is
configured on the standby device.
Setting RADIUS timers
The device uses the following types of timers to control the communication with a RADIUS server:
Server response timeout timer (response-timeout)—Defines the RADIUS request retransmission
•
interval. After sending a RADIUS request (authentication/authorization or accounting request), the
device starts the server response timeout timer. If the device receives no response from the RADIUS
server before the timer expires, it resends the request.
Server quiet timer (quiet)—Defines the duration to keep an unreachable server in blocked state. If
•
one server is not reachable, the device changes the server's status to blocked, starts this timer for the
server, and tries to communicate with another server in active state. After the server quiet timer
expires, the device changes the status of the server back to active.
Real-time accounting timer (realtime-accounting)—Defines the interval at which the device sends
•
real-time accounting packets to the RADIUS accounting server for online users. To implement
real-time accounting, the device must periodically send real-time accounting packets to the
accounting server for online users.
Follow these guidelines when you set RADIUS timers:
For the same type of users, the maximum number of transmission attempts multiplied by the RADIUS
•
server response timeout period must be less than the client connection timeout time and cannot
exceed 75 seconds. Otherwise, stop-accounting messages cannot be buffered, and the
primary/secondary server switchover cannot take place. For example, the product of the two
parameters must be less than 10 seconds for voice users and less than 30 seconds for Telnet users,
because the client connection timeout period for voice users is 10 seconds and that for Telnet users
is 30 seconds.
When you configure the maximum number of RADIUS packet transmission attempts and the
•
RADIUS server response timeout timer, consider the number of secondary servers. If the
retransmission process takes too long, the client connection in the access module may time out
while the device is trying to find an available server. For more information about the maximum
number of RADIUS packet transmission attempts, see
request transmission
Command
system-view
radius nas-backup-ip ip-address
[ vpn-instance vpn-instance-name ]
Command
system-view
radius scheme
radius-scheme-name
nas-backup-ip ip-address
attempts."
35
Remarks
N/A
Not specified by default.
Remarks
N/A
N/A
Not specified by default.
"Setting the maximum number of RADIUS