Configuring and Managing MPE/iX Internet Services (MPE/iX 6.5)

214 AppendixC
BIND 8.1 Enhanced Features
BIND 8 Highlights
notify If yes (the default), DNS NOTIFY
messages are sent when a zone the
server is authoritative for changes. The
use of NOTIFY speeds convergence
between the master and its slaves.
Slave servers that receive a NOTIFY
messageand understand it, willcontact
the master server for the zone and see
if they need to do a zone transfer, and if
they do, they will initiate it
immediately. The notify option may
also be specified in the zone statement,
in which case it overrides the options
notify statement.
recursion If yes, and a DNS query requests
recursion, then the server will attempt
to do all the work required to answer
the query. If recursion is not on, the
server will return a referral to the
client if it doesn’t know the answer. The
default is yes. See also fetch-glue.
Forwarding The forwarding facility can be used to create a large sitewide cache on a
few servers, reducing traffic over links to external nameservers. It can
also be used to allow queries by servers that do not have direct access to
the Internet, but wish to look up exterior names anyway. Forwarding
occurs only on those queries for which the server is not authoritative
and does not have the answer in its cache.
forward This option is only meaningful if the
forwarders list is not empty. A value of
first, the default, causes the server to
query the forwarders first, and if that
doesn’t answer the question the server
will then look for the answer itself. If
only is specified, the server will only
query the forwarders.
forwarders Specifies the IP addresses to be used for
forwarding. The default is the empty
list (no forwarding).
Future versions of BIND 8 will provide a more powerful forwarding
system. The syntax described above will continue to be supported.