装snmp问题

xoolong

[root@qhb2c opt]# rpm -ivh net-snmp-5.1.2-11.i386.rpm
warning: net-snmp-5.1.2-11.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: Failed dependencies:
        libsensors.so.3 is needed by net-snmp-5.1.2-11.i386
[root@qhb2c opt]# rpm -ivh net-snmp-devel-5.1.2-11.i386.rpm
warning: net-snmp-devel-5.1.2-11.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: Failed dependencies:
        net-snmp = 5.1.2 is needed by net-snmp-devel-5.1.2-11.i386
[root@qhb2c opt]# rpm -ivh net-snmp-libs-5.1.2-11.i386.rpm
warning: net-snmp-libs-5.1.2-11.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
Preparing...                ########################################### [100%]
        package net-snmp-libs-5.1.2-11 is already installed
[root@qhb2c opt]# rpm -ivh net-snmp-utils-5.1.2-11.i386.rpm
warning: net-snmp-utils-5.1.2-11.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: Failed dependencies:
        net-snmp = 5.1.2 is needed by net-snmp-utils-5.1.2-11.i386
[root@qhb2c opt]# rpm -ivh blah1.rpm net-snmp-utils-5.1.2-11.i386.rpm
error: open of blah1.rpm failed: No such file or directory
warning: net-snmp-utils-5.1.2-11.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
有什么办法解决