# yum upgrade Loaded plugins: langpacks ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/os/repodata/repomd.xml: [Errno 12] Timeout on ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/os/repodata/repomd.xml: (28, 'Connection time-out') Trying other mirror. sl-rolling | 3.5 kB 00:00:00 ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/updates/fastbugs/repodata/repomd.xml: [Errno 12] Timeout on ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/updates/fastbugs/repodata/repomd.xml: (28, 'Connection time-out') Trying other mirror. sl-rolling-fastbugs | 2.5 kB 00:00:00 ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/updates/security/repodata/repomd.xml: [Errno 12] Timeout on ftp://ftp.scientificlinux.org/linux/scientific/7rolling/x86_64/updates/security/repodata/repomd.xml: (28, 'Connection time-out') Trying other mirror. sl-rolling-security