Configuring and Managing MPE/iX Internet Services (MPE/iX 6.0)

Appendix C 173
BIND 8.1 Enhanced Features
BIND 8 Highlights
Query Address If the server doesn’t know the answer to a question, it will query other
nameservers. query-source specifies the address and port used for
such queries. If address is * or is omitted, a wildcard IP address
(INADDR_ANY) will be used. If port is * or is omitted, a random
unprivileged port will be used. The default is
query-source address * port *;
NOTE Query-source currently applies only to UDP queries; TCP queries
always use a wildcard IP address and a random unprivileged port.
Zone Transfers max-transfer-
time-in Inbound zone transfers (named-xfer processes)
running longer than this many minutes will be
terminated. The default is 120 minutes (2 hours).
transfer-
format The server supports two zone transfer methods.
one-answer uses one DNS message per resource
record transferred. many-answers packs as many
resource records as possible into a message.
many-answers is more efficient, but is only known to
be understood by BIND 8.1 and patched versions of
BIND 4.9.5. The default is one-answer.
transfer-format may be overridden on a
per-server basis by using the server statement.
transfers-in The maximum number of inbound zone transfers that
can be running concurrently. The default value is 10.
Increasing transfers-in may speed up the
convergence of slave zones, but it also may increase the
load on the local system.
transfers-out This option will be used in the future to limit the
number of concurrent outbound zone transfers. It is
checked for syntax, but is otherwise ignored.
transfers-per-ns
The maximum number of inbound zone transfers
(named-xfer processes) that can be concurrently
transferring from a given remote nameserver. The
default value is 2. Increasing transfers-per-ns may
speed up the convergence of slave zones, but it also may
increase the load on the remote nameserver.
transfers-per-ns may be overridden on a
per-server basis by using the transfers phrase of the
server statement.