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RADIUS Client Communication

Updated: December 16, 2008

Applies To: Windows Server 2008 R2

Network Policy Server (NPS) exchanges RADIUS messages with RADIUS clients. RADIUS messages exchanged between NPS and RADIUS clients must comply with the RADIUS protocol specification or NPS might not be able to process connection requests.

Events

Event ID Source Message

14

NPS

A RADIUS message was received from RADIUS client %1 with an invalid authenticator. This is typically caused by mismatched shared secrets. Verify the configuration of the shared secret for the RADIUS client in the Network Policy Server snap-in and the configuration of the network access server.

21

NPS

The response to RADIUS client %1 exceeds the maximum RADIUS message length of 4096 bytes.

Related Management Information

NPS RADIUS Client

Network Policy Server Infrastructure

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