HP A5830 Series, Руководство по настройке

Страница: 37 / 280

29
The NAS checks the validity of received control packets and accepts only control packets from known
servers. To use a security policy server that is independent of the AAA servers, you must configure the IP
address of the security policy server on the NAS. To implement all EAD functions, configure both the IP
address of the iMC security policy server and that of the iMC configuration platform on the NAS.
To configure the IP address of the security policy server for a scheme:
To do… Use the command… Remarks
1. Enter system view
system-view —
2. Enter RADIUS scheme view
radius scheme radius-scheme-name —
3. Specify a security policy
server
security-policy-server ip-address
Required.
No security policy server is
specified by default.
Configuring interpretation of RADIUS class attribute as CAR parameters
According to RFC 2865, a RADIUS server assigns the RADIUS class attribute 25 to a RADIUS client.
However, the RFC only requires the RADIUS client to send the attribute to the accounting server on an
"as is" basis; it does not require the RADIUS client to interpret the attribute. Some RADIUS servers use
the class attribute to deliver the assigned CAR parameters. In this case, the switch must interpret the
attribute as CAR parameters to implement user-based traffic monitoring and controlling.
To configure the switch to interpret the RADIUS class attribute as CAR parameters:
To do… Use the command… Remarks
1. Enter system view
system-view —
2. Enter RADIUS scheme view
radius scheme radius-
scheme-name
—
3. Interpret the class attribute as
CAR parameters
attribute 25 car
Required.
By default, RADIUS attribute 25 is not
interpreted as CAR parameters.
Whether interpretation of RADIUS class attribute as CAR parameters is supported depends on these
factors:
•
Whether the switch supports CAR parameters assignment.
•
Whether the RADIUS server supports assigning CAR parameters through the class attribute.
Enabling the trap function for RADIUS
With the trap function, a NAS sends a trap message when either of the following events occurs:
•
The status of a RADIUS server changes. If a NAS receives no response to an accounting or
authentication request before the specified maximum number of RADIUS request transmission
attempts is exceeded, it considers the server unreachable, sets the status of the server to block and
sends a trap message. If the NAS receives a response from a RADIUS server that it considers
unreachable, the NAS considers that the RADIUS server is reachable again, sets the status of the
server to
active , and sends a trap message.
•
The ratio of the number of failed transmission attempts to the total number of authentication request
transmission attempts reaches the threshold. This threshold ranges from 1% to 100% and defaults to
30%. This threshold can only be configured through the MIB.