Hello, friends, As I met some problems when using Freeradius to send Disconnect Request. Hope you can give me any suggestions. Please let me describe my issue. First I created a packete.txt for radclinet.exe. The content of packet.txt is as: Acct-Session-Id="00000001" Calling-Station-Id="001E310008CC" User-Name="wimax" X-Ascend-Session-Svr-Key="0123456789" NAS-IP-Address=100.1.6.5 NAS-Identifier=100.1.6.5 WiMAX-Session-ID=��XXXXXXX�� WiMAX-DM-Action-Code=��0000ffff�� After packet.txt was sent to AGW, radclinet debug window said: ��Unknown WiMAX-Session �CID or Unknown WiMAX-DM-Action-Code �� WiMAX NWG 1.3 says: 5.4.1.7 RADIUS Disconnect Request Message isconnect Request message should be defined with the following: User-Name��Calling-Station-Id�� WiMAX-Session-ID�� WiMAX-DM-Action-Code So I must add and make WiMAX-Session-ID and WiMAX-DM-Action-Code sent by Freeradius. Could you please give me any suggestions on how to add the attribute of WiMAX-Session-ID and WiMAX-DM-Action-Code into the sent message ? Thanks a lot for your help in advance! Xiaochen Chen @ WiMAX Test Lab Beiing , China