Due to Dag's last blog post about his latest update to mrepo, we had several folks in the #centos and #centos-social irc channels asking how to configure it to just synchronize repositories on a server in their local network.
First of all you have to understand that mrepo isn't only a repo synchronisation tool : it can help you to create deployment servers etc (see the mrepo features list )..
If you only need to sync repositories, you have other alternatives :
rsync (if your remote mirror support rsync of course .. for CentOS mirrors that support rsync, see the centos.org mirrors list webpage)
if rsync is not available, use reposync from the yum-utils package (available too on RHEL and works to mirror rhn internally because of the rhn-plugin available on RHEL yum version)
Just a reminder for people who forget that such tools (especially reposync) exist .. ;-)