In my experience, that error usually means that NAV was unable to connect to the router (UDP to port 161). So check the SNMP settings on the router (community, SNMP ACL and so on), and any ACLs between NAV and the router. Regards, Arne Svennevik Network Administrator Norwegian Met.Office -----Original Message----- From: Christian Baensch [mailto:christian.baensch@rrze.uni-erlangen.de] Sent: Monday, August 18, 2008 4:58 PM To: nav-users@uninett.no Subject: Unsupported SNMP protocol error on Cisco devices Hello, we have got some problems to add our Cisco routers to the database: Error: nav.Snmp.UnsupportedSnmpVersionError: Unsupported SNMP protocol version: 0 Unfortunately it happens to all our Cisco routers but not the Cisco switches. This Error Notify already occured in your mailling list with the hint: jar -tf /usr/local/nav/lib/java/SimpleSnmp.jar This is our output: nav:~# jar -tf /usr/local/nav/lib/java/SimpleSnmp.jar META-INF/ META-INF/MANIFEST.MF no/ no/ntnu/ no/ntnu/nav/ no/ntnu/nav/SimpleSnmp/ no/ntnu/nav/SimpleSnmp/SimpleSnmp.class no/ntnu/nav/SimpleSnmp/SimpleSnmpHP.class no/ntnu/nav/SimpleSnmp/TimeoutException.class What can we do? We are running actually NAV 3.3.3 with SunJava 1.4.2. Thanks in advance! With kind regards Christian Baensch -- Christian Baensch, Kommunikationssysteme Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Germany Regionales Rechenzentrum Erlangen (RRZE) christian.baensch@rrze.uni-erlangen.de www.rrze.uni-erlangen.de