H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 264)

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Configuring Shared Keys for RADIUS Messages
Both RADIUS client and server adopt MD5 algorithm to encrypt RADIUS messages before they are
exchanged between the two parties. The two parties verify the validity of the RADIUS messages
received from each other by using the shared keys that have been set on them, and can accept and
respond to the messages only when both parties have the same shared key.
Follow these steps to configure shared keys for RADIUS messages:
To do… Use the command… Remarks
Enter system view system-view —
Create a RADIUS scheme and
enter its view radius scheme
radius-scheme-name
Required
By default, a RADIUS scheme named
"system" has already been created in
the system.
Set a shared key for RADIUS
authentication/authorization
messages
key authentication string
Required
By default, no shared key is created.
Set a shared key for RADIUS
accounting messages
key accounting string
Required
By default, no shared key is created.
The authentication/authorization shared key and the accounting shared key you set on the device must
be respectively consistent with the shared key on the authentication/authorization server and the
shared key on the accounting server.
Configuring the Maximum Number of RADIUS Request Transmission Attempts
The communication in RADIUS is unreliable because this protocol uses UDP packets to carry its data.
Therefore, it is necessary for the device to retransmit a RADIUS request if it gets no response from the
RADIUS server after the response timeout timer expires. If the device gets no answer after it has tried
the maximum number of times to transmit the request, the device considers that the request fails.
Follow these steps to configure the maximum transmission attempts of a RADIUS request:
To do… Use the command… Remarks
Enter system view system-view —
Create a RADIUS scheme and
enter its view radius scheme
radius-scheme-name
Required
By default, a RADIUS scheme named
"system" has already been created in
the system.
Set the maximum number of
RADIUS request transmission
attempts
retry retry-times
Optional
By default, the system can try three
times to transmit a RADIUS request.