Need to know about NOARP Post: 302287342

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Operating Systems Solaris Need to know about NOARP Post 302287342 by pupp on Friday 13th of February 2009 11:24:12 AM

02-13-2009

Registered User

ifconfig -arp would disable arp on a specified interface

Quote:

arp
This is an option specific to broadcast networks such as Ethernets or packet radio. It enables the use of the Address Resolution Protocol (ARP) to detect the physical addresses of hosts attached to the network. For broadcast networks, it is on by default. If ARP is disabled, ifconfig displays the NOARP flag.

Look at this output. notice how arp is enabled on the rtls0 interface. once i specify or specify to disable arp, NOARP is shown the 2nd time i run ifconfig.

Code:

-bash-3.00# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
elxl1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.1.108 netmask ffffff00 broadcast 192.168.1.255
        ether 0:60:97:c4:df:71
rtls0: flags=1000802<BROADCAST,MULTICAST,IPv4> mtu 1500 index 3
        inet 0.0.0.0 netmask 0
        ether 0:1b:2f:2f:56:b2
-bash-3.00# ifconfig rtls0 -arp
-bash-3.00# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
elxl1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 192.168.1.108 netmask ffffff00 broadcast 192.168.1.255
        ether 0:60:97:c4:df:71
rtls0: flags=1000882<BROADCAST,NOARP,MULTICAST,IPv4> mtu 1500 index 3
        inet 0.0.0.0 netmask 0
        ether 0:1b:2f:2f:56:b2

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LEARN ABOUT NETBSD

iwi

IWI(4)							   BSD Kernel Interfaces Manual 						    IWI(4)

NAME

     iwi -- Intel PRO/Wireless 2200BG/2915ABG IEEE 802.11 driver

SYNOPSIS

     iwi* at pci? dev ? function ?

DESCRIPTION

     The iwi driver provides support for Intel(R) PRO/Wireless 2200BG and 2915ABG MiniPCI network adapters.

     By default, the iwi driver configures the adapter for BSS operation (aka infrastructure mode).  This mode requires the use of an access
     point.

     For more information on configuring this device, see ifconfig(8).

     The Intel firmware requires acceptance of the End User License Agreement.	The full license text can be found in
     /libdata/firmware/if_iwi/LICENSE.ipw2200-fw.  The license is agreed to by setting the sysctl variable hw.iwi.accept_eula to 1.

EXAMPLES

     Join an existing BSS network (i.e.: connect to an access point):

	   ifconfig iwi0 inet 192.168.0.20 netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

	   ifconfig iwi0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net

     Join a specific BSS network with 64 bits WEP encryption:

	   ifconfig iwi0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net 
		   nwkey 0x1234567890

     Join a specific BSS network with 128bits WEP encryption:

	   ifconfig iwi0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net 
		   nwkey 0x01020304050607080910111213

DIAGNOSTICS

     iwi%d: device timeout  The driver will reset the hardware.  This should not happen.

SEE ALSO

     an(4), awi(4), ipw(4), pci(4), wi(4), ifconfig(8), iwictl(8), firmload(9)

     The IWI Web Page, http://damien.bergamini.free.fr/ipw/.

AUTHORS

     The iwi driver and this man page were written by Damien Bergamini <damien.bergamini@free.fr>.

BSD
								 February 5, 2009							       BSD