HP FlexFabric 5930 Series Security Configuration Manual page 40

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.
Setting HWTACACS timers
The device uses the following timers to control communication with an HWTACACS server:
Server response timeout timer (response-timeout)—Defines the HWTACACS server response
•
timeout timer. The device starts this timer immediately after an HWTACACS authentication,
authorization, or accounting request is sent. If the device does not receive a response from the
server after the timer expires, it sets the server to blocked and sends the request to another
HWTACACS server.
Real-time accounting timer (realtime-accounting)—Defines the interval for the device to send
•
real-time accounting updates to the HWTACACS accounting server for online users. To implement
real-time accounting, the device must periodically send real-time accounting packets for online
users to the accounting server.
Server quiet timer (quiet)—Defines the duration to keep an unreachable server in blocked state. If
•
a server is not reachable, the device changes the server's 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.
The status of HWTACACS servers controls the HWTACACS servers with which the device communicates
when the current servers are no longer available. You can specify one primary HWTACACS server and
multiple secondary HWTACACS servers, with the secondary servers functioning as the backup of the
primary servers. Typically, the device chooses servers based on the following rules:
When the primary server is in active state, the device communicates with the primary server.
•
If the primary server fails, the device changes the server's status to blocked, starts a quiet timer for
the server, and tries to communicate with a secondary server in active state (a secondary server
configured earlier has a higher priority).
If the secondary server is unreachable, the device changes the server's status to blocked, starts a
quiet timer for the server, and continues to check the next secondary server in active state. This
search process continues until the device finds an available secondary server or has checked all
secondary servers in active state.
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
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.