ethers(4) Kernel Interfaces Manual ethers(4)NAME
ethers - Database that maps Ethernet addresses to hostnames
DESCRIPTION
The /etc/ethers file is used in conjunction with the reverse address resolution protocol daemon (rarpd) to map Ethernet addresses to host-
names. It contains information about the known (48-bit) Ethernet addresses of hosts on the Internet.
For each host on an Ethernet, a single line should be present in the file with the following information:
Ethernet-address official-host-name
Items are separated by one or more spaces or tabs. A number sign (#) indicates the beginning of a comment that extends to the end of line.
The standard form for Ethernet addresses is:
x:x:x:x:x:x
The x is a hexadecimal number between 0 and ff, representing 1 byte. The address bytes are always in network order.
Hostnames can contain any printable character other than a space, tab, newline, or number sign (#).
Hostnames in the /etc/ethers file should correspond to the hostnames in the /etc/hosts file or to those provided by the name service.
EXAMPLES
The following is a sample ethers file:
08:00:20:01:e5:1c host1 # Comments go here 08:00:20:01:d0:4c host2 # Comments go here 08:00:20:01:e0:1d
host3 # Comments go here 08:00:20:00:c2:4e host4 # Comments go here
RELATED INFORMATION
Commands: rarpd(8)
Files: hosts(4), packetfilter(7)
Routines: ethers(3) delim off
ethers(4)
Check Out this Related Man Page
ethers(5) File Formats Manual ethers(5)Name
ethers - database that maps Ethernet addresses to hostnames
Description
The file is used in conjunction with the reverse address resolution protocol daemon, to map Ethernet addresses to hostnames. It contains
information about the known (48-bit) Ethernet addresses of hosts on the Internet.
For each host on an Ethernet, a single line should be present in the file with the following information:
Ethernet-address official-host-name
Items are separated by one or more spaces or tabs. A number sign (#) indicates the beginning of a comment that extends to the end of line.
The standard form for Ethernet addresses is:
x:x:x:x:x:x
The x is a hexadecimal number between 0 and ff, representing 1 byte. The address bytes are always in network order.
Hostnames can contain any printable character other than a space, tab, newline, or number sign (#).
Hostnames in the file should correspond to the hostnames in the file or to those provided by the name service.
Examples
The following is a sample file: 08:00:20:01:e5:1c host1 # Comments go here 08:00:20:01:d0:4c host2 # Comments go
here 08:00:20:01:e0:1d host3 # Comments go here 08:00:20:00:c2:4e host4 # Comments go here
See Alsoethers(3n), hosts(5), rarpd(8c)
Introduction to Networking and Distributed System Services
ethers(5)
I am using Red Hat 7.1 . I have installed one Server and trying to make network installing workstations on other system of a network. The Ethernet of the server has been mounted and working properly. I am getting problem installing /mounting the Ethernet of the workstations .I have tryed this by... (1 Reply)
Hi...
i am trying to ping my servers .The hostnames are present in a file .They are separated by spaces in the file .
i am doing the following :
a=1
for name in $(cat host2 |cut -d" " -f$a)
do
echo Pinging server $name
ping -c5 $name
a=$a+1
done
It is... (3 Replies)
I have a Quad Ethernet card in a 220R. 2 ports activated. Each has its own hostname file and both hostnames are in the hosts file. I want both ports to have the same IP address so we can use the 2nd port in case we lose communication on the port. On bootup, the box gives me:
SIOCSLIFFLAGS:... (5 Replies)
I run - telnet adl001 (where adl001 is a box name) and it works Ok
/etc/hosts file does not have resolution of the ip address for this name
where it can be found ?
Thanks (5 Replies)
I have a file (file1) which is like
host1
host2
host3
host4
the list goes on............
Now I want the above lines in files to be compared with files under
/opt/new/
File names are as below:
Dev
Prod
QA
And suppose host1 from file1 is found under Dev(file under /opt/new)... (2 Replies)
Hello all,
I would like a bit of help with a problem I am having. I have the following example file:
$ cat test_hosts
10.10.2.3 host1
10.10.2.4 host2
10.10.2.130 host3
10.10.2.5 host4
10.10.2.230 host5
10.10.2.22 host6
I need to match all IP addresses in the 10.10.2.1-10.10.2.22... (5 Replies)
Hi here is my question;
any help would be appreciated
The Linux system pokey has two Ethernet cards. The first Ethernet card is connected to a companywide
TCP/IP network covering the addresses 87.65.43.xx, where pokey's address is
87.65.43.21. The second Ethernet interface is connected to a... (2 Replies)
Hi All,
In Ultra 10 at time system is not displaying value for Ethernet address and Host ID.
Also, when i am trying to change the value of environment variables i am getting below message and value is not changing
Thanks (4 Replies)
I am trying to determine if there are several url/host names for an IP address. Is there a UNIX command to find ALL host names for an IP address?
Thank you in advance. (3 Replies)
I have a tricky problem, and I'm quite the scripting newb.
I have Cisco ACLs that have IP addresses in them. I'd like to convert the IP's to hostnames for easier analysis. A sample ACL input file would be (I've obfuscated the IPs):
access-list acl-secure-out line 1 extended permit icmp any... (3 Replies)
hi,does anybody familiar with datastage tx.?
added your particular question:
I have to modify a map to drop a timestamp from the filename variable and pass that value down to the transform/validation maps.
thanks,,
Edit/Delete Message (1 Reply)
I have the following part of a makefile and want to simplify it
using rules rather than having to code the same two blocks
when I need ti build another program.
An having difficulty doing it
all: 1dvel2 1dvel 2dvel
... (8 Replies)
Hello,
I am trying to develop a script to check for valid hostnames. Below are the prerequisites for a valid hostname which I got from wiki :
Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, "en.wikipedia.org" is a hostname. Each label... (8 Replies)