Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

arp(8c) [bsd man page]

ARP(8C) 																   ARP(8C)

NAME
arp - address resolution display and control SYNOPSIS
arp hostname arp -a [ vmunix ] [ kmem ] arp -d hostname arp -s hostname ether_addr [ temp ] [ pub ] [ trail ] arp -f filename DESCRIPTION
The arp program displays and modifies the Internet-to-Ethernet address translation tables used by the address resolution protocol (arp(4p)). With no flags, the program displays the current ARP entry for hostname. The host may be specified by name or by number, using Internet dot notation. With the -a flag, the program displays all of the current ARP entries by reading the table from the file kmem (default /dev/kmem) based on the kernel file vmunix (default /vmunix). With the -d flag, a super-user may delete an entry for the host called hostname. The -s flag is given to create an ARP entry for the host called hostname with the Ethernet address ether_addr. The Ethernet address is given as six hex bytes separated by colons. The entry will be permanent unless the word temp is given in the command. If the word pub is given, the entry will be "published"; i.e., this system will act as an ARP server, responding to requests for hostname even though the host address is not its own. The word trail indicates that trailer encapsulations may be sent to this host. The -f flag causes the file filename to be read and multiple entries to be set in the ARP tables. Entries in the file should be of the form hostname ether_addr [ temp ] [ pub ] [ trail ] with argument meanings as given above. SEE ALSO
inet(3N), arp(4P), ifconfig(8C) 4.3 Berkeley Distribution May 20, 1986 ARP(8C)

Check Out this Related Man Page

ARP(8)							    BSD System Manager's Manual 						    ARP(8)

NAME
arp -- address resolution display and control SYNOPSIS
arp [-n] hostname arp [-nv] -a arp [-v] -d -a arp [-v] -d hostname [proxy] arp -s hostname ether_addr [temp] [pub [proxy]] arp -f filename DESCRIPTION
The arp program displays and modifies the Internet-to-Ethernet address translation tables used by the address resolution protocol (arp(4)). With no flags, the program displays the current ARP entry for hostname. The host may be specified by name or by number, using Internet dot notation. Available options: -a The program displays all of the current ARP entries. -d A super-user may delete an entry for the host called hostname with the -d flag. If the proxy keyword is specified, only the pub- lished ``proxy only'' ARP entry for this host will be deleted. If used with -a instead of a hostname, it will delete all arp entries. -f Causes the file filename to be read and multiple entries to be set in the ARP tables. Entries in the file should be of the form hostname ether_addr [temp] [pub] with argument meanings as described below. -n Show network addresses as numbers (normally arp attempts to display addresses symbolically). -s hostname ether_addr Create an ARP entry for the host called hostname with the Ethernet address ether_addr. The Ethernet address is given as six hex bytes separated by colons. The entry will be permanent unless the word temp is given in the command. If the word pub is given, the entry will be "published"; i.e., this system will act as an ARP server, responding to requests for hostname even though the host address is not its own. If the word proxy is also given, the published entry will be a ``proxy only'' entry. -v Display verbose information when adding or deleting ARP entries. SEE ALSO
inet(3), arp(4), ifconfig(8) HISTORY
The arp command appeared in 4.3BSD. BSD
January 31, 2006 BSD
Man Page

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

filesize from a file which has the list of files.

i have a file myfile. it has the below entries /temp/firstfile /temp/secondfile and many more.. okay, now, i want to addup all the space occupied by this file hmmm, but i met with a problem in getting each file out. i did a silly command like more myfile | grep temp | ls -ltr and it... (3 Replies)
Discussion started by: yls177
3 Replies

2. UNIX for Dummies Questions & Answers

How to catch the rscyn errors?

Hi, In my code, I am running rsync, if any error comes, I have to wirte the error to temp file and I want to send this temp file content to specified email address, I am getting starnge outpout, can you pls help to solve this? My code is: tempfile=error.`date '+%m%d%Y_%H%M%SGMT'` rsync -az -e... (3 Replies)
Discussion started by: redlotus72
3 Replies

3. IP Networking

Proxy ARP Difficulties

edited ... (7 Replies)
Discussion started by: TheMaskedMan
7 Replies

4. Red Hat

trying to use arp command... it doesnt exist

im trying to get an ARP readout using the command 'arp -a'... but the command doesnt exist in Fedora Core 6 - IPv6.... is there an equivalent command? (4 Replies)
Discussion started by: HMSS013
4 Replies

5. UNIX for Dummies Questions & Answers

Help with host file

Hi there, Could anyone tell me what is wrong with this entry in the /etc/hosts file 127.0.0.1 localhost hostname.lcl hostname #loghost 1.2.3.4 hostname I have sendmail runing. IF I remove hostname.lcl and hostname from the localhost(127.0.0.1)'s line, sendmail... (4 Replies)
Discussion started by: sundar63
4 Replies

6. AIX

How to create short name for hostname

Such as one hostname: abcd1234, how to create a short name: a1? (4 Replies)
Discussion started by: rainbow_bean
4 Replies

7. Programming

Manipulate the Linux ARP Cache in C

Hello, I need help on how to "access" or manipulate the Linux ARP Cache in C, here is the description of the project i'm working in: There are a lot of tools that analize ARP frames and send an e-mail to the sysadmin, that's easy. What i want to do is to inspect every ARP frame that arrives... (18 Replies)
Discussion started by: semash!
18 Replies

8. Programming

SIOCGARP to display the entire ARP table.

Hello everybody, I have a working code that displays an entry from a given IP address. but, how can i display the entire ARP table? like the option 'arp -a' of the standard linux program. This is the code:#include <stdio.h> #include <string.h> #include <stdlib.h> #include <netdb.h>... (4 Replies)
Discussion started by: semash!
4 Replies

9. UNIX for Advanced & Expert Users

arp questions

Can someone please explain this output to me. Why doesn't ifconfig show the same info? ~ $ arp -a ? (10.71.0.1) at 00:1b:21:2b:eb:0c on eth0 (4 Replies)
Discussion started by: cokedude
4 Replies

10. UNIX for Advanced & Expert Users

Accident use of arp -d command:Not able to login to server

Hi , I am working in a Unix Solaris server which has apache installed. I was logged into the server using ssh . I accidentally ran the arp -d command with the hostname of the logged in server and deleted the entry :confused:. Now I am not able to access the server. Is there anyway I can access... (14 Replies)
Discussion started by: Blunder49
14 Replies

11. War Stories

What arp -s is good for

A customer appears to have drastically misunderstood our instructions for connecting to our WAN. He set his PC IP address to the same as one of the bridges. :mad: :wall: This caused much confusion on the network, to put it mildly. He called to complain about the poor performance of the network... (13 Replies)
Discussion started by: Corona688
13 Replies

12. Shell Programming and Scripting

Fetch ipaddress and hostname from host file.

hello guys, I have a query ,I am looking for a unix command using awk and grep that help me fetching a particular ip address and hostname from the host file.........?????? (3 Replies)
Discussion started by: Pawan Ramnani
3 Replies

13. Shell Programming and Scripting

Script Shell Extracting hostname

Hi all, Please i have to get hostname of an ip address (172.16.68.4). so i have used the command 'host' host $ipaddr >> iptohostname.txt Here is my file: iptohostname.txt 4.68.16.172.in-addr.arpa domain name pointer g-4.xxx.yyyy.zz. 3.68.16.172.in-addr.arpa domain name pointer... (11 Replies)
Discussion started by: chercheur111
11 Replies

14. Shell Programming and Scripting

Need to get word after a specific word

Hi, I need hostname from below entry.How do I write a script on this?tnsping is utility in oracle -if I do tnsping ora11gb then it would give one output and I want to extract hostname from this output which come after "HOST=" oracle@brookford:~> tnsping ora11gb|grep -i HOST Attempting to... (11 Replies)
Discussion started by: admin_db
11 Replies

15. UNIX for Beginners Questions & Answers

ARP and Bonjour to build list of user devices

Hi, I want to build a list of the devices that are connected to my network and refresh that list every 10th minute (using an RPi with Raspbian). The host names are obtained by using Bonjour which is easily installed by: sudo apt-get install libnss-mdns To build the list manually, I do like... (2 Replies)
Discussion started by: Zooma
2 Replies