This document intentionally gives more definition to the roles of
"Master," "Slave," and "Primary Master" servers, and their
enumeration in NS RRs, and the SOA MNAME field. In that sense, the
following server type definitions can be considered an addendum to
[RFC1035], and are intended to be consistent with [RFC1996]:
an authoritative server that uses AXFR or IXFR to
retrieve the zone and is named in the zone's NS
an authoritative server configured to be the
source of AXFR or IXFR data for one or more slave
master server at the root of the AXFR/IXFR
dependency graph. The primary master is named in
the zone's SOA MNAME field and optionally by an NS
RR. There is by definition only one primary master
server per zone.
A domain name identifies a node within the domain name space tree
structure. Each node has a set (possibly empty) of Resource Records
(RRs). All RRs having the same NAME, CLASS and TYPE are called a
Resource Record Set (RRset).
The pseudocode used in this document is for example purposes only.
If it is found to disagree with the text, the text shall be
considered authoritative. If the text is found to be ambiguous, the
pseudocode can be used to help resolve the ambiguity.