net-snmp-5.0.10.tar.gz.part

Have you downloaded the file yet? If you haven't then google . Then you will come up with a lot of pages. Or you can check out UK Mirror Service. Then download the file, and then unpack it and install, just like you any file with red hat.

Cheers!

net-snmp-5.0.10.tar.gz.part You have only downloaded "part" of the file. When the entire file downloads, the "part" part of the name will disappear and you will be left with "net-snmp-5.0.10.tar.gz" which can be gunziped and untar'ed and then installed.

As Mr wmorri said "continue the download".