HPE FlexNetwork 7500 Series Security Configuration Manual page 48

Step
Enabling the RADIUS server load sharing feature
By default, the device communicates with RADIUS servers based on the server roles. It first attempts
to communicate with the primary server, and, if the primary server is unavailable, it then searches for
the secondary servers in the order they are configured. The first secondary server in active state is
used for communication. In this process, the workload is always placed on the active server.
Use the RADIUS server load sharing feature to dynamically distribute the workload over multiple
servers regardless of their server roles. The device forwards an AAA request to the most appropriate
server of all active servers in the scheme after it compares the weight values and numbers of
currently served users. Specify a weight value for each RADIUS server based on the AAA capacity of
the server. A larger weight value indicates a higher AAA capacity.
In RADIUS server load sharing, once the device sends a start-accounting request to a server for a
user, it forwards all subsequent accounting requests of the user to the same server. If the accounting
server is unreachable, the device returns an accounting failure message rather than searching for
another active accounting server.
To enable the RADIUS server load sharing feature:
Step
1. Enter system view.
2. Enter RADIUS scheme
view.
3. Enable the RADIUS
server load sharing
feature.
Specifying the source IP address for outgoing RADIUS packets
The source IP address of RADIUS packets that a NAS sends must match the IP address of the NAS
configured on the RADIUS server. A RADIUS server identifies a NAS by its IP address. Upon
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
Command
RADIUS accounting server:
state primary accounting { active
| block }
•
Set the status of a secondary
RADIUS authentication server:
state secondary authentication
[ { ipv4-address | ipv6
ipv6-address } [ port-number |
vpn-instance vpn-instance-name ]
* ] { active | block }
•
Set the status of a secondary
RADIUS accounting server:
state secondary accounting
[ { ipv4-address | ipv6
ipv6-address } [ port-number |
vpn-instance vpn-instance-name ]
* ] { active | block }
Command
system-view
radius scheme
radius-scheme-name
server-load-sharing enable
34
Remarks
only be viewed by using the
display radius scheme
command. After the device
restarts, all servers are
restored to the active state.
Remarks
N/A
N/A
By default, this feature is disabled.