To answer my own question...(why do you always find a solution only minutes after posting a Q :-) The reason for the errors was that the new snmpwalk program defaults to using the SNMP v3 protocol which it appears Squid does not understand. If I use a command of 'snmpwalk -v 1 -c public udp:localhost:3401 .1.3.6.1.4.1.3495.1.1' I get the results expected. Cheers, Ken. -----Original Message----- From: Ken Thomson Sent: Friday, 13 July 2007 2:15 PM To: squid-users@xxxxxxxxxxxxxxx Subject: SNMP & Squid 2.6STABLE12 problems Hi list, I am trying to configure Squid 2.6STABLE12 to accept SNMP queries, but so far have been unsuccessful. Squid was configured with --enable-snmp. The appropriate lines from squid.conf are: snmp_port 3401 acl snmppublic snmp_community public snmp_access allow snmppublic all snmp_access deny all snmp_incoming_address 0.0.0.0 snmp_outgoing_address 0.0.0.0 When I try to use snmpwalk (from NET-SNMP v5.3.1) with 'snmpwalk -c public localhost:3401 .1.3.6.1.4.1.3495.1.1' I receive a 'snmpwalk: Timeout' message. When I examine cache.log I see many entries of 'Failed SNMP agent query from : 127.0.0.1.'. I have confirmed using netstat that squid is listening on 3401 with UDP. What I am doing wrong? Kind Regards, Ken.