HP 6125XLG Configuration Manual page 37

The source address of outgoing RADIUS packets is typically the IP address of an egress interface on the
NAS to communicate with the RADIUS server. In some cases, however, you must change the source IP
address. For example, if the NAS is configured with VRRP for stateful failover, the source IP address of
outgoing RADIUS packets can be the virtual IP address of the uplink VRRP group.
You can specify a source IP address for outgoing RADIUS packets in RADIUS scheme view for a specific
RADIUS scheme, or in system view for all RADIUS schemes whose servers are in a VPN or the public
network.
Before sending a RADIUS packet, the NAS selects a source IP address in the following order:
1. The source IP address specified for the RADIUS scheme.
2. The source IP address specified in system view for the VPN or public network, depending on where
the RADIUS server resides.
3. The IP address of the outbound interface specified by the route.
To specify a source IP address for all RADIUS schemes in a VPN or the public network:
Step
1. Enter system view.
2. Specify a source IP address
for outgoing RADIUS packets.
To specify a source IP address for a specific RADIUS scheme:
Step
1. Enter system view.
2. Enter RADIUS scheme view.
3. Specify a source IP address
for outgoing RADIUS packets.
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. The timer starts immediately after a RADIUS request is sent. 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
Command
system-view
radius nas-ip { ipv4-address | ipv6
ipv6-address } [ vpn-instance
vpn-instance-name ]
Command
system-view
radius scheme
radius-scheme-name
nas-ip { ipv4-address | ipv6
ipv6-address }
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Remarks
N/A
By default, the IP address of the
RADIUS packet outbound interface
is used as the source IP address.
Remarks
N/A
N/A
By default, the source IP address
specified by the radius nas-ip
command in the system view is
used. If no source IP address is
specified, the IP address of the
RADIUS packet outbound interface
is used.