H3C Technologies H3C SecPath F1000-E - Manual (Page 198)

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The firewall periodically sends accounting updates to RADIUS accounting servers to report the traffic
statistics of online users. For normal and accurate traffic statistics, make sure the unit for data flows and
that for packets on the firewall are consistent with those on the RADIUS server.
Follow these guidelines when you set the username format and the traffic statistics units for a RADIUS
scheme:
• If a RADIUS scheme defines that the username is sent without the ISP domain name, do not apply
the RADIUS scheme to more than one ISP domain. Otherwise, users using the same username but
in different ISP domains are considered the same user.
• For level switching authentication, the user-name-format keep-original and user-name-format
without-domain commands produce the same results. They make sure usernames sent to the
RADIUS server carry no ISP domain name.
To set the username format and the traffic statistics units for a RADIUS scheme:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter RADIUS scheme view.
radius scheme
radius-scheme-name
N/A
3. Set the format for usernames
sent to the RADIUS servers. user-name-format { keep-original
| with-domain | without-domain }
Optional.
By default, the ISP domain name is
included in a username.
4. Specify the unit for data flows
or packets sent to the RADIUS
servers.
data-flow-format { data { byte |
giga-byte | kilo-byte |
mega-byte } | packet
{ giga-packet | kilo-packet |
mega-packet | one-packet } }*
Optional.
The default unit is byte for data
flows and one-packet for data
packets.
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
any managed NAS. If yes, the server processes the packet. If not, the server drops the packet.
Usually, the source address of outgoing RADIUS packets can be the IP address of the NAS's any
interface that can communicate with the RADIUS server. In some special scenarios, however, you must
change the source IP address. For example, if a Network Address Translation (NAT) device is present
between the NAS and the RADIUS server, the source IP address of outgoing RADIUS packets must be a
public IP address of the NAS. If the NAS is configured with the Virtual Router Redundancy Protocol (VRRP)
for stateful failover, the source IP address of outgoing RADIUS packets can be the virtual IP address of the
VRRP group to which the uplink belongs.
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, a NAS selects a source IP address in this order:
• The source IP address specified for the RADIUS scheme.
• The source IP address specified in system view for the VPN or public network, depending on where
the RADIUS server resides.
• The IP address of the outbound interface specified by the route.