H3C Technologies H3C S12500-X Series Switches - Manual (Page 47)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Enter HWTACACS scheme
view.
hwtacacs scheme
hwtacacs-scheme-name
N/A
3. Specify a VPN for the
HWTACACS scheme.
vpn-instance vpn-instance-name
By default, an HWTACACS
scheme belongs to the public
network.
377B
Setting the username format and traffic statistics units
A username is typically in the format userid@isp-name, where isp-name represents the user's ISP domain
name. By default, the ISP domain name is included in a username. However, if HWTACACS servers do
not recognize usernames that contain ISP domain names, you can configure the device to remove the
domain name from each username to be sent.
If you want two or more ISP domains to reference the same HWTACACS scheme, configure that
HWTACACS scheme to keep the ISP domain name in usernames for domain identification.
The device reports online user traffic statistics in accounting packets. The traffic measurement units are
configurable, but they must be the same as configured on the HWTACACS accounting servers.
To set the username format and traffic statistics units for an HWTACACS scheme:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter HWTACACS scheme
view. hwtacacs scheme
hwtacacs-scheme-name
N/A
3. Set the format of usernames
sent to the HWTACACS
servers.
user-name-format { keep-original |
with-domain | without-domain }
Optional.
By default, the ISP domain name
is included in a username.
4. Set the data flow and packet
measurement units for traffic
statistics.
data-flow-format { data { byte |
giga-byte | kilo-byte | mega-byte }
| packet { giga-packet | kilo-packet
| mega-packet | one-packet } }*
Optional.
By default, traffic is counted in
bytes and packets.
378B
Specifying the source IP address for outgoing HWTACACS packets
The source IP address of HWTACACS packets that a NAS sends must match the IP address of the NAS
configured on the HWTACACS server. An HWTACACS server identifies a NAS by IP address. When the
HWTACACS server receives a packet, it checks whether the source IP address of the packet is the IP
address of a managed NAS. If it is, the server processes the packet. If it is not, the server drops the
packet.
To communicate with the HWTACACS server, the source address of outgoing HWTACACS packets is
typically the IP address of an egress interface on the NAS. However, in some situations, you must change
the source IP address. For example, if the NAS is configured with the VRRP for stateful failover, the source
IP address of outgoing HWTACACS packets can be the virtual IP address of the uplink VRRP group.
You can specify the source IP address for outgoing HWTACACS packets in HWTACACS scheme view for
a specific HWTACACS scheme, or in system view for all HWTACACS schemes whose servers are in a
VPN or the public network.
Before sending an HWTACACS packet, the NAS selects a source IP address in the following order: