ifconfig, PARAMETERS
*Conan The Librarian (sorry for the slow response - running on an old VAX)
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Library /sys$common/syshlp/tcpip$ucp_help.hlb ifconfig, PARAMETERS *Conan The Librarian (sorry for the slow response - running on an old VAX) |
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alias alias_address[/bitmask] Establishes an additional network
address for this interface. This
can be useful when changing
network numbers and you want
to continue to accept packets
addressed to the old interface.
If you do not specify a bitmask
or netmask with the alias
address, the default netmask
is based on the alias address's
network class.
If you are using the optional
bitmask argument, do not use the
netmask argument.
-alias alias_address Removes the network address
specified. This can be used
either if you incorrectly
specified an alias or if an alias
is no longer needed. The -alias
parameter functions in the same
manner as the delete parameter.
aliaslist address_list[/bitmask]Establishes a range of additional
network addresses for this
interface. The range can be
a comma-separated list or
a hyphenated list, and is
inclusive. You can also specify
the optional CIDR bitmask
(/bitmask) argument at the end
of the list. Do not use a comma-
separated list and a hyphenated
list for a range.
-aliaslist Removes a range of network
addresses for this interface.
This can be useful when deleting
network numbers and you want
to keep the primary interface
address. The alias list rules
are the same as for the aliaslist
parameter.
allmulti Enables the reception of all
multicast packets.
-allmulti Disables the reception of all
multicast packets.
arp Enables the use of the Address
Resolution Protocol (ARP)
in mapping between network-
level addresses and link-level
addresses. This parameter is on
by default.
-arp Disables the use of the ARP.
Use of this parameter is not
recommended. See arp(8) for more
information.
broadcast broad_address Specifies the address to use
to represent broadcasts to the
network. The default broadcast
address is the address with a
host part consisting of all 1s
(ones). Note that the computation
of the host part is dependent on
netmask (see the description of
the netmask parameter).
delete [net_address] Removes the network address
specified. This would be used
if you incorrectly specified an
alias, or if it was no longer
needed. If you have incorrectly
set an NS address having the
side effect of specifying the
host portion, removing all NS
addresses will allow you to
respecify the host portion.
If no address is specified,
all network addresses for the
interface are deleted.
down Marks an interface as not working
(down), which keeps the system
from trying to transmit messages
through that interface. If
possible, the ifconfig command
also resets the interface to
disable reception of messages.
Routes that use the interface,
however, are not automatically
disabled.
ipmtu mtu_value Alters the size of the maximum
transfer unit (MTU) for messages
that your system transmits. It
might be necessary to reduce
the MTU size so that bridges
connecting token rings can
transfer frames without error.
metric number Sets the routing metric, or
number of hops, for the interface
to the value of number. The
default value is 0 (zero)
if number is not specified,
indicating that both hosts are
on the same network. The routing
metric is used by the routed
and gated daemons, with higher
metrics indicating that the route
is less favorable.
netmask mask Specifies how much of the address
to reserve for subdividing
networks into sub-networks. This
parameter can only be used with
an address family of inet. Do
not use this parameter if you
are specifying the CIDR mask
(/bitmask) with the address
argument, alias parameter, or
aliaslist parameter.
The mask variable includes both
the network part of the local
address and the subnet part,
which is taken from the host
field of the address. The mask
can be specified as a single
hexadecimal number beginning with
0x, in the standard Internet
dotted-decimal notation, or
beginning with a name.
The mask contains 1s (ones) for
the bit positions in the 32-bit
address that are reserved for
the network and subnet parts, and
0s (zeros) for the bit positions
that specify the host. The mask
should contain at least the
standard network portion.
The default netmask is based on
the address parameter's network
class.
up Marks an interface as working
(up). This parameter is used
automatically when setting the
first address for an interface,
or can be used to enable an
interface after an ifconfig
down command. If the interface
was reset when previously
marked with the parameter down
(see the following section
for a description of this
parameter), the hardware will
be reinitialized.
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