NAME
named-xfer — ancillary agent for inbound zone transfers
SYNOPSIS
named-xfer -z
zone_to_transfer
-f
db_file
-s
serial_no
[-d
debuglevel]
[-l
debug_log_file]
[-t
trace_file]
[-p
port#]
[-S]
nameserver...
DESCRIPTION
named-xfer
is an ancillary program executed by
named(1M)
to perform an inbound zone transfer.
It is rarely executed directly, and then generally by system administrators
trying to debug a zone transfer problem.
See RFC's 1033, 1034, and 1035 for more information on the Internet
name-domain system.
Options are:
- -z
specifies the name of the zone to be transferred.
- -f
specifies the name of the file into which the zone should be dumped
when it is received from the primary server.
- -s
specifies the serial number of the current copy of the zone selected
for transfer. If the SOA resource record received from the specified
remote nameserver(s) does not have a serial number higher than one
specified with this option, the transfer will be aborted.
- -d
Print debugging information.
A number after the
d
determines the level of
messages printed.
- -l
Specifies a log file for debugging messages.
The default file uses the prefix
xfer.ddt.
and is located in the
/var/tmp
directory.
Note this option only applies if
-d
is also specified.
- -t
Specifies a trace file which will contain a protocol trace of the zone
transfer.
This is probably only of interest when debugging the name server itself.
- -p
Use a different port number.
The default is the standard port number as returned by
getservbyname(3)
for service ``domain''.
- -S
Perform a restricted transfer of only the SOA, NS and glue A records for the
zone. The SOA will not be loaded by
named,
but will be used to determine when to verify the NS records. See the
stubs
directive in
named(1M)
for more information.
Additional arguments are taken as name server addresses in so-called
``dotted-quad'' syntax only; no host name are allowed here.
At least one address must be specified.
Any additional addresses will be tried
in order if the first one fails to transfer to us successfully.
RETURN VALUE
- 0
Indicates that the zone was up-to-date and no transfer was needed.
- 1
Indicates a successful transfer.
- 2
Indicates that the host(s)
named-xfer
queried cannot be reached or that an
error occurred and
named-xfer
did not log a corresponding error message.
- 3
Indicates that an error occurred and
named-xfer
logged an error message.
AUTHOR
named-xfer
was developed by the University of California, Berkeley.
SEE ALSO
named(1M),
resolver(3N),
resolver(4),
hostname(5).
RFC 882, RFC 883, RFC 973, RFC 974, RFC 1033, RFC 1034,
RFC 1035, RFC 1123.
