satellite server upgrade fails with errors

Issue

• Satellite server upgrade fails with errors:

[root@host mnt]#  rhn-satellite-activate \
> --rhn-cert /satbackup/satellite5.5.cert \
> --ignore-version-mismatch
RHN_PARENT: satellite.rhn.redhat.com

ERROR: unhandled exception occurred:
Traceback (most recent call last):
  File "/usr/bin/rhn-satellite-activate", line 42, in ?
    sys.exit(abs(mod.main() or 0))
  File "/usr/lib/python2.4/site-packages/spacewalk/satellite_tools/rhn_satellite_activate.py", line 596, in main
    activateSatellite_remote(options)
  File "/usr/lib/python2.4/site-packages/spacewalk/satellite_tools/rhn_satellite_activate.py", line 290, in activateSatellite_remote
    ret = s.satellite.deactivate_satellite(systemid, rhn_cert)
  File "/usr/lib/python2.4/site-packages/rhn/rpclib.py", line 649, in __call__
    return self._send(self._name, args)
  File "/usr/lib/python2.4/site-packages/rhn/rpclib.py", line 383, in _request
    self._handler, request, verbose=self._verbose)
  File "/usr/lib/python2.4/site-packages/rhn/transports.py", line 171, in request
    headers, fd = req.send_http(host, handler)
  File "/usr/lib/python2.4/site-packages/rhn/transports.py", line 702, in send_http
    self._connection.connect()
  File "/usr/lib/python2.4/site-packages/rhn/connections.py", line 215, in connect
    raise socket.error("Unable to connect to the host and port specified")
socket.error: Unable to connect to the host and port specified