Hello, Following packages installed on my server. FreeRADIUS 2.1.4 Perl 5.8.9 p5-SNMP_Session-1.12 p5-Net-Telnet-3.03 MySQL-5.0.77 I decided to use SNMP_Session and BER modules. When I'm executing checkrad by hand then I got following message. # checkrad cisco 192.168.0.60 1645 tseveen 40 SNMP Error: Received SNMP response with error code error status: noSuchName index 1 (OID: 1.3.6.1.4.1.9.2.9.2.1.18.1645) SNMPv1_Session (remote host: "192.168.0.60" [192.168.0.60].161) community: "public" request ID: -17216476 PDU bufsize: 8000 bytes timeout: 2s retries: 5 backoff: 1) at /usr/local/sbin/checkrad line 221 checkrad: No SNMP answer from cisco. checkrad: not found! I thought maybe OID is not compatible for my router c3825. is it ? Can you please provide more information about NAS port and Session ID ? Tseveen.