Help configuring eth0

[farley99]

My isp gave me 3 things and linux asks for 4

Linux needs
Broadcast: ?
IP: 192.116.60.15
netmask: 255.255.255.24
network: ?

My ISP gave me
IP: 192.116.60.15
netmask: 255.255.255.24
gateway: 192.116.50.1

What do i put for broadcast and network?

 

[Norwich]

Hmmm,

That netmask is invalid. They may have meant 255.255.255.240 but that would mean the IP address 92.116.60.15 is invalid too as for that mask, it would be a network address and not a host address. Why? Simplifying it, a range of hosts determined by a subnet can also be referenced by a network address (which identifies the subnet alone, and the broadcast which can be used to identify all hosts at one time).


To use the standard 255.255.255.0 as an example - this determines 254 possible machines on a subnet. So for a network of 192.168.1.0, the hosts are 192.168.1.1 to 192.168.1.254 and the broadcast address is 192.168.1.255


With 255.255.255.224 - this determines 30 hosts in the subnet. As one IP address is 192.116.60.15, it can be calculated that the network address is:

192.116.60.0

The hosts on the subnet are:

192.116.60.1 to 192.116.60.30

and the broadcast is:

192.116.60.31

And as an example, the 'next' subnet would be:

192.116.60.32 (net)
192.116.60.33 to 62 (hosts)
192.168.60.63 (broadcast)

This is a good online calculator:

http://www.subnetonline.com/subcalc/subnet8.html

Maybe they meant 255.255.255.224

 

[farley99]

Yes, this is it 255.255.255.224 I typed it in wrong.

Thanks for your help