This is not really a RHCN problem; it is a problem with
distribution mirroring. But, this is as close as I can get
with the list of choices presented.

For several days, our distribution mirroring server has been
unable to talk with Red Hat's distribution sites. We get the
following errors:

failed to connect to contrib.redhat.com: No route to host
failed to connect to ftp.redhat.com: Connection refused
failed to connect to updates.redhat.com: No route to host

Please pass this along to whoever is responsible for these
sites and if possible please pass back to me where reports
of this type should be sent.

Thanks.