10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi there,
I setup a dhcp server on a debian.
It is designed to only assign ip addresses to a list of known hosts.
The config file looks like :
log-facility local6;
ignore unknown-clients;
subnet 172.16.0.0 netmask 255.255.0.0 { }
host 1 { hardware ethernet 00:03:2d:xx:xx:xx; fixed-address... (3 Replies)
Discussion started by: chebarbudo
3 Replies
2. Linux
Hi I am a bit confused, I want to setup failover within dhcpd. There are multiple subnets and hosts with static IP's. however it seems I need to set up an IP range for the subnets for failover to work is this correct or am I missing something (1 Reply)
Discussion started by: eeisken
1 Replies
3. Shell Programming and Scripting
Hello All,
I am trying to clean up a poorly looking awk command. I am searching for a way to define a range of positional parameters. I may not be searching for the correct syntax.
Example:
awk ' /14:3*/ {print $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13}' app.log
Is it possible to shorten... (4 Replies)
Discussion started by: jaysunn
4 Replies
4. Shell Programming and Scripting
I want to print between the range two patterns if a particular pattern is present in between the two patterns. I am new to Unix. Any help would be greatly appreciated.
e.g.
Pattern1
Bombay
Calcutta
Delhi
Pattern2
Pattern1
Patna
Madras
Gwalior
Delhi
Pattern2
Pattern1... (2 Replies)
Discussion started by: joyan321
2 Replies
5. UNIX for Advanced & Expert Users
Hi All,
I'm curious about what this community would think about this portion of a dhcpd.conf file:
subnet 192.168.1.0 netmask 255.255.255.0 {
...
...other parameters/options...
...
range 192.168.1.3 192.168.1.253
range 172.16.0.2 172.16.0.50
}
I tested this and dhcpd did not barf... (2 Replies)
Discussion started by: Keene44
2 Replies
6. Linux
Hi All,
I'm curious about what this community would think about this portion of a dhcpd.conf file:
subnet 192.168.1.0 netmask 255.255.255.0 {
...
...other parameters/options...
...
range 192.168.1.3 192.168.1.253
range 172.16.0.2 172.16.0.50
}
I tested this and... (1 Reply)
Discussion started by: Keene44
1 Replies
7. Shell Programming and Scripting
Say I write something like the following:
var1=1
var2=2
for int in 1 2
do
echo "\$var$int"
done
I want the output to be:
1
2
Instead I get something like:
$var1
$var2 (2 Replies)
Discussion started by: Awanka
2 Replies
8. UNIX for Advanced & Expert Users
I want to change the password for dhcpd so I can give it to the dhcp operator to handle dhcp server. however, when I use passwd to change the password, it prompt me with
changing password for dhcpd.
old password:
my question is that I have never set dhcpd password before, so what is the old... (1 Reply)
Discussion started by: fredao
1 Replies
9. Linux
I have intall a REdhat 9.0 as a server and Ive configure to act as a DHCP however Im having technical problems b/c the file /etc/dhcpd.conf does not exists. I went to the text edit and I created :
subnet 192.192.168.100.0 netmask 255.255.255.0 {
range 192.168.100.10 192.168.100.150;... (1 Reply)
Discussion started by: keliy1
1 Replies
10. UNIX for Advanced & Expert Users
(GNU/Linux)
Ain't it possible to force dhcpd to NOT send any DHCP Offers on a specific interface?
I dont want dhcpd to answer on eth0 but do answer on eth1.
best regards /Esaia (2 Replies)
Discussion started by: Esaia
2 Replies
netmasks(4) File Formats netmasks(4)
NAME
netmasks - network mask database
SYNOPSIS
/etc/inet/netmasks
/etc/netmasks
DESCRIPTION
The netmasks file contains network masks used to implement IP subnetting. It supports both standard subnetting as specified in RFC-950 and
variable length subnetting as specified in RFC-1519. When using standard subnetting there should be a single line for each network that is
subnetted in this file with the network number, any number of SPACE or TAB characters, and the network mask to use on that network. Network
numbers and masks may be specified in the conventional IP `.' (dot) notation (like IP host addresses, but with zeroes for the host part).
For example,
128.32.0.0 255.255.255.0
can be used to specify that the Class B network 128.32.0.0 should have eight bits of subnet field and eight bits of host field, in addition
to the standard sixteen bits in the network field.
When using variable length subnetting, the format is identical. However, there should be a line for each subnet with the first field being
the subnet and the second field being the netmask that applies to that subnet. The users of the database, such as ifconfig(1M), perform a
lookup to find the longest possible matching mask. It is possible to combine the RFC-950 and RFC-1519 form of subnet masks in the net-
masks file. For example,
128.32.0.0 255.255.255.0
128.32.27.0 255.255.255.240
128.32.27.16 255.255.255.240
128.32.27.32 255.255.255.240
128.32.27.48 255.255.255.240
128.32.27.64 255.255.255.240
128.32.27.80 255.255.255.240
128.32.27.96 255.255.255.240
128.32.27.112 255.255.255.240
128.32.27.128 255.255.255.240
128.32.27.144 255.255.255.240
128.32.27.160 255.255.255.240
128.32.27.176 255.255.255.240
128.32.27.192 255.255.255.240
128.32.27.208 255.255.255.240
128.32.27.224 255.255.255.240
128.32.27.240 255.255.255.240
128.32.64.0 255.255.255.192
can be used to specify different netmasks in different parts of the 128.32.0.0 Class B network number. Addresses 128.32.27.0 through
128.32.27.255 have a subnet mask with 28 bits in the combined network and subnet fields (often referred to as the subnet field) and 4 bits
in the host field. Furthermore, addresses 128.32.64.0 through 128.32.64.63 have a 26 bits in the subnet field. Finally, all other
addresses in the range 128.32.0.0 through 128.32.255.255 have a 24 bit subnet field.
Invalid entries are ignored.
SEE ALSO
ifconfig(1M), inet(7P)
Postel, Jon, and Mogul, Jeff, Internet Standard Subnetting Procedure, RFC 950, Network Information Center, SRI International, Menlo Park,
Calif., August 1985.
V. Fuller, T. Li, J. Yu, K. Varadhan, Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy, RFC 1519,
Network Information Center, SRI International, Menlo Park, Calif., September 1993.
T. Pummill, B. Manning, Variable Length Subnet Table For IPv4, RFC 1878, Network Information Center, SRI International, Menlo Park, Calif.,
December 1995.
NOTES
/etc/inet/netmasks is the official SVr4 name of the netmasks file. The symbolic link /etc/netmasks exists for BSD compatibility.
SunOS 5.10 7 Jan 1997 netmasks(4)
