Timeout when downloading updates and packages!

Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED                                          urses-devel-5.9-13.20130511.el7.x86_64.rpm
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED                                           66% [==============================================-                       ]  1.8 B/s | 477 kB  37:06:34 ETA
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 12] Timeout on https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
ncurses-devel-5.9-13.20130511. FAILED
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/Packages/ncurses-devel-5.9-13.20130511.el7.x86_64.rpm: [Errno 14] curl#18 - "transfer closed with 241604 bytes remaining to read"
Trying other mirror.