HP MSR Series Configuration Manual page 46

receiving a RADIUS packet, a RADIUS server checks whether the source IP address of the packet is
the IP address of a managed NAS.
•
If it is the IP address of a managed NAS, the server processes the packet.
•
If it is not the IP address of a managed NAS, the server drops the packet.
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. However, in some situations, you must change
the source IP address. For example, when VRRP is configured for stateful failover, configure the
virtual IP of the uplink VRRP group as the source address.
You can specify a source IP address for outgoing RADIUS packets in RADIUS scheme view or in
system view.
•
The IP address specified in RADIUS scheme view applies only to one RADIUS scheme.
•
The IP address specified in system view applies to 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 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 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 does not receive a 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 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.
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 system view is used.
If the source IP address is not
specified, the IP address of the
outbound interface is used.