Communicator 3000 MPE/iX Release 6.0 (Platform Software Release C.60.00) (30216-90269)

Chapter 10 261
Technical Articles
DNS BIND/iX and Syslog/iX
dnsquery The dnsquery tool can be used to provide you all the
DNS detail information.
Overview of Syslog/iX
Syslog is the standard event logging system for Syslog/iX UNIX. Now
the Syslog/iX can run on the MPE/iX shell operating system on MPE/iX
release 6.0. With the features of Syslog/iX available on MPE/iX
systems, the event messages can be logged to files, terminal devices, or
even forward to other syslog systems. Syslog/iX can accept data from
the local system via an AF_UNIX socket or from any system on the
network via an AF_INET UDP socket on port 514. DNS BIND/iX uses
Syslog/iX as the event logging subsystem.
Types of Names Servers
DNS BIND/iX provides two types of name-servers: primary masters
and secondary masters. A primary master name server gets the data for
the zones it is authorized for from files on the host it runs on. A
secondary master name server gets its zone data from another name
server authorized for the zone. When a secondary name-server starts
up, it contacts the name-server it updates from and, if necessary, pulls
the zone data over. This is referred to as a zone transfer. With DNS
BIND/iX available on MPE/iX systems, you can create the data for your
zone and set up a primary master name-server, then you can set up
secondary master name-servers that load their data from primary
servers. Once they are set up, the secondary servers will periodically
query the primary servers to keep the zone data up to date.
Major Files Used for DNS BIND/iX
The following lists the major files required for DNS BIND/iX:
NAMED.CONF The NAMED.CONF file is a configuration file of the DNS
BIND/iX, which contains runtime configuration for the
name-server called NAMED. This file resides in
/BIND/PUB/etc directory.
Data Files The files from which primary name-servers load their
zone data are called data files or zone files. They are
also referred to as db files or database files. The data
files contain resource records that describe the zone.
The resource records describe all the hosts in the zone.
There are two types of the data files. The files mapping addresses to
hostnames are called db.ADDRdb or zone.ADDR, where ADDR is the
network address. The files mapping hostnames to addresses called
db.DOMAIN or zone.DOMAIN.