Communication between replica hosts

The hosts must be able to communicate with each other. If your network uses host names, the sending host must be able to resolve the receiving host’s name to an IP address.

To accomplish this, you may have to update the hosts file, hosts NIS map, or Domain Name Service. To verify TCP/IP access, use rcp on each sending host to copy a file to the receiving hosts or use store-and-forward to send a packet (see Store-and-forward packet submission).

Note: If hosts in your network are known only by their IP addresses, you can use the IP addresses instead of host names, and no resolution is necessary.