Welcome to Linux Knowledge Base and Tutorial
"The place where you learn linux"
The ONE Campaign to make poverty history

 Create an AccountHome | Submit News | Your Account  

Tutorial Menu
Linux Tutorial Home
Table of Contents

· Introduction to Operating Systems
· Linux Basics
· Working with the System
· Shells and Utilities
· Editing Files
· Basic Administration
· The Operating System
· The X Windowing System
· The Computer Itself
· Networking
· System Monitoring
· Solving Problems
· Security
· Installing and Upgrading
· Linux and Windows

Glossary
MoreInfo
Man Pages
Linux Topics
Test Your Knowledge

Site Menu
Site Map
FAQ
Copyright Info
Terms of Use
Privacy Info
Disclaimer
WorkBoard
Thanks
Donations
Advertising
Masthead / Impressum
Your Account

Communication
Feedback
Forums
Private Messages
Surveys

Features
HOWTOs
News Archive
Submit News
Topics
User Articles
Web Links

Google
Google


The Web
linux-tutorial.info

Who's Online
There are currently, 44 guest(s) and 0 member(s) that are online.

You are an Anonymous user. You can register for free by clicking here

  

arp



SYNOPSIS

       arp [-vn] [-H type] [-i if] -a [hostname]

       arp [-v] [-i if] -d hostname [pub]

       arp [-v] [-H type] [-i if] -s hostname hw_addr [temp]

       arp  [-v]  [-H  type] [-i if] -s hostname hw_addr [netmask
       nm] pub

       arp [-v] [-H type] [-i if] -Ds hostname ifa  [netmask  nm]
       pub

       arp [-vnD] [-H type] [-i if] -f [filename]


DESCRIPTION

       Arp  manipulates  the  kernel's ARP cache in various ways.
       The primary options are clearing an address mapping  entry
       and  manually setting up one.  For debugging purposes, the
       arp program also allows a complete dump of the ARP  cache.


OPTIONS

       -v, --verbose
              Tell the user what is going on by being verbose.

       -n, --numeric
              shows  numerical  addresses  instead  of  trying to
              determine symbolic host, port or user names.

       -H type, --hw-type type
              When  setting  or  reading  the  ARP  cache,   this
              optional parameter tells arp which class of entries
              it should check for.  The  default  value  of  this
              parameter  is  ether  (i.e.  hardware code 0x01 for
              IEEE 802.3 10Mbps Ethernet).   Other  values  might
              include  network  technologies such as ARCnet (arc­
              net) , PROnet (pronet) , AX.25 (ax25)  and  NET/ROM
              (netrom).

       -a [hostname], --display [hostname]
              Shows  the  entries of the specified hosts.  If the
              hostname parameter is not used, all entries will be
              displayed.

       -d hostname, --delete hostname
              Remove  any entry for the specified host.  This can
              be used if the indicated host is brought down,  for
              example.

       -D, --use-device
              Use the interface ifa's hardware address.
              Manually  create  an  ARP address mapping entry for
              host hostname with hardware address set to  hw_addr
              class, but for most classes one can assume that the
              usual presentation can be used.  For  the  Ethernet
              class, this is 6 bytes in hexadecimal, separated by
              colons. When adding  proxy  arp  entries  (that  is
              those  with  the  publish flag set a netmask may be
              specified to proxy arp for entire subnets. This  is
              not  good  practice, but is supported by older ker­
              nels because it can be useful. If the temp flag  is
              not  supplied entries will be permanent stored into
              the ARP cache.
              NOTE: As of kernel 2.2.0 it is no  longer  possible
              to  set  an  ARP  entry for an entire subnet. Linux
              instead does  automagic  proxy  arp  when  a  route
              exists   and  it  is  forwarding.  See  arp(7)  for
              details.

       -f filename, --file filename
              Similar to  the  -s  option,  only  this  time  the
              address  info  is  taken from file filename set up.
              The  name  of  the  data   file   is   very   often
              /etc/ethers,  but this is not official. If no file­
              name is specified /etc/ethers is used as default.

              The format of the file is simple; it only  contains
              ASCII  text  lines  with a hostname, and a hardware
              address separated by whitespace.  Additionally  the
              pub, temp and netmask flags can be used.

       In  all  places where a hostname is expected, one can also
       enter an IP address in dotted-decimal notation.

       As a special case for compatibility the order of the host­
       name and the hardware address can be exchanged.

       Each  complete  entry in the ARP cache will be marked with
       the C flag. Permanent entries are marked with M  and  pub­
       lished entries have the P flag.


FILES

       /proc/net/arp,
       /etc/networks
       /etc/hosts
       /etc/ethers


SEE ALSO

       rarp(8), route(8), ifconfig(8), netstat(8)


AUTHORS

       Fred  N.  van  Kempen, <waltje@uwalt.nl.mugnet.org> with a
       lot of improvements from net-tools Maintainer Bernd Ecken­
  
Show your Support for the Linux Tutorial

Purchase one of the products from our new online shop. For each product you purchase, the Linux Tutorial gets a portion of the proceeds to help keep us going.


Login
Nickname

Password

Security Code
Security Code
Type Security Code


Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Help if you can!


Amazon Wish List

Did You Know?
You can get all the latest Site and Linux news by checking out our news page.


Friends



Tell a Friend About Us

Bookmark and Share



Web site powered by PHP-Nuke

Is this information useful? At the very least you can help by spreading the word to your favorite newsgroups, mailing lists and forums.
All logos and trademarks in this site are property of their respective owner. The comments are property of their posters. Articles are the property of their respective owners. Unless otherwise stated in the body of the article, article content (C) 1994-2013 by James Mohr. All rights reserved. The stylized page/paper, as well as the terms "The Linux Tutorial", "The Linux Server Tutorial", "The Linux Knowledge Base and Tutorial" and "The place where you learn Linux" are service marks of James Mohr. All rights reserved.
The Linux Knowledge Base and Tutorial may contain links to sites on the Internet, which are owned and operated by third parties. The Linux Tutorial is not responsible for the content of any such third-party site. By viewing/utilizing this web site, you have agreed to our disclaimer, terms of use and privacy policy. Use of automated download software ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and are therefore expressly prohibited. For more details on this, take a look here

PHP-Nuke Copyright © 2004 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 0.09 Seconds