R3303-HP HSR6800 Routers Security Configuration Guide
34
Ste
p
Command
Remarks
1. Enter system view.
system-view
N/A
2. Specify a source IP address
for outgoing RADIUS packets.
radius nas-ip { ip-address | ipv6
ipv6-address } [ vpn-instance
vpn-instance-name ]
By default, the IP address of the
outbound interface is used as the
source IP address.
To specify a source IP address for a specific RADIUS scheme:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter RADIUS scheme view.
radius scheme
radius-scheme-name
N/A
3. Specify a source IP address
for outgoing RADIUS packets.
nas-ip { ip-address | ipv6
ipv6-address }
By default, the IP address of the
outbound interface is used as the
source IP address.
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 "
Setting the maximum number of RADIUS
r
equest transmission attempts."
• When a number of secondary servers are configured, the client connections of access modules that
have a short client connection timeout period may still be timed out during initial authentication or