Bay Networks 6300 Supplement Manual page 64

Chapter 2 Configuring the Remote Annex 6300
Remote Annex 6300 Supplement to the Remote Annex Administrator's Guide for UNIX
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Each DNS server is responsible for maintaining information on all hosts
in its domain. If the server receives a request for a host that is not in its
domain, the server retrieves the information from another domain server
for the requesting host.
A number of DNS servers are available and the Annex can support them
all. One typical DNS server is the Berkeley Internet Name Domain
(BIND) server. The BIND server is a standard part of 4.3BSD (see
4.3BSD documentation for more details). DNS provides:
• address to name translation.
• multiple aliases for a host.
• multiple addresses for the same host.
Address to name translation allows a host to obtain a name for a specific
Internet address, allowing an Annex to learn its name from a DNS server.
The DNS' capabilities for assigning multiple aliases or multiple IP
addresses to a single host allow you to assign multiple names to a rotary
or multiple Annexes to the same rotary (for more details, see The Port
Server and Rotaries on page A-77).
IEN-116 Name Server
The IEN-116 name server is a simple host-resident name server that uses
the local /etc/hosts file as a database. One host is designated as the name
server host, and other hosts query that host for an address. Using this
method, every host on the network does not need its own up-to-date /etc/
hosts file, and every host does not have to run rwhod. The Annex
distribution medium supplies the source for IEN-116 (see Configuring
Hosts and Servers on page A-209 for installation instructions).
IEN-116 name servers cannot do reverse address queries.
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