HP MSR2000 Configuration Manual page 44

Step
4. Set the data flow and packet
measurement units for traffic
statistics.
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:
1. The source IP address specified for the HWTACACS scheme.
2. The source IP address specified in system view for the VPN or public network, depending on where
the HWTACACS server resides.
3. The IP address of the outbound interface specified by the route.
To specify a source IP address for all HWTACACS schemes of a VPN or the public network:
Step
1. Enter system view.
2. Specify a source IP address
for outgoing HWTACACS
packets.
To specify a source IP address for a specific HWTACACS scheme:
Step
1. Enter system view.
2. Enter HWTACACS scheme
view.
3. Specify the source IP address
of outgoing HWTACACS
packets.
Command
data-flow-format { data { byte |
giga-byte | kilo-byte | mega-byte }
| packet { giga-packet | kilo-packet
| mega-packet | one-packet } }*
Command
system-view
hwtacacs nas-ip { ipv4-address |
ipv6 ipv6-address } [ vpn-instance
vpn-instance-name ]
Command
system-view
hwtacacs scheme
hwtacacs-scheme-name
nas-ip { ipv4-address | ipv6
ipv6-address }
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Remarks
Optional.
By default, traffic is counted in
bytes and packets.
Remarks
N/A
By default, the IP address of the
HWTACACS packet outbound
interface is used as the source IP
address.
Remarks
N/A
N/A
By default, the source IP address
specified by the hwtacacs 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.