Technical data

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ifconﬁg

-arp

Disables the use of the ARP. Use of this parameter is not recommended.

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 ones (1).

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. Use this parameter if you incorrectly

speciﬁed an alias or if the alias was no longer needed. If you have incorrectly

set an NS address, removing all NS addresses w ill allow you to specify the host

portion again.

If no address is speciﬁed,

ifconfig

deletes all network addresses for the interface.

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 the reception of messages. Routes that use the

interface, however, are not automatically disabled.

[-]fail

Controls the speciﬁed interface. You can force the interface to fail by specifying

fail

and to recover by specifying

-fail

[-]home

Forces an alias address to be created with a home interface. This option is useful

when you are creating an IP address. By default, all primary IP addresses are

created with a home interface.

[-]fs

Creates an IP address that is not managed by failSAFE IP. By default, if the

failSAFE IP services is running, all IP addresses are created as failSAFE IP

addresses except for those addresses assigned to the loopback interface (LO0) (for

example, the localhost address 127.0.0.1.

ipmtu mtu_value

Alters the size of the maximum transmission 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 zero (0) if number is not speciﬁed, indicating

that both hosts are on the same network. The routing metric is used by the

ROUTED and GATED services, 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 parameter, alias parameter, or aliaslist parameter.

Troubleshooting Utilities Reference A–13