Name Service
Many network management packages attempt to use name service to resolve the IP addresses of network devices from their names and vice versa. If you choose to define your network devices to name service, the way you set up name service can influence how well your network management software works. Conversely, the way your NMS uses name resolution can be more or less robust.
It really doesn't matter what form of name service you use, as all of them work and our recommendations apply to all of them. The three methods of providing name service in common usage today are the following:
A hosts file: on UNIX, commonly known as /etc/hosts; and on Windows NT, /WINNT/system32/drivers/etc/lmhosts.sam file
The Domain Name Service (DNS) protocol ...
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