Home network IP addresses

OGroteKoning

OGroteKoning

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I use my laptop on three different networks. My home network and one of the client's networks have the same "home" IP address. The stock std 192.168.1.1

PART 1
I have a NAS connected to my router and I have set up (say 5) shared folders/drives. The NAS has a static IP. Everytime I log into the client's network, my laptop tells me it could not connect to the shared folders. I expected as much since I am not connected to my home network. Their IT guru told me my laptop (on Win7) will take longer to boot up because it is looking for the shared folders/drives. He also advised that their might be conflicts and this can cause some problems. This all sounds quite logical, but here is my first question - Is he talking nonsense, or is there merit in what he is saying?

PART 2
So I am inclined to change my home network IP. I read the following:
Fortunately, IANA reserves three ranges of IP addresses for private use:

10.0.0.1 to 10.255.255.254
172.16.0.1 to 172.31.255.254
192.168.0.1 to 192.168.255.254

These IP addresses are never routed over the Internet, so you can use them on your home network as you see fit.
Click to expand...
Does this mean, that I can select any IP within this range and still be "safe"? (assume x.x.x.1 will be the router and I allow for 99 additional IP's)
e.g. 10.23.54.1 to 10.23.54.100
or 172.31.150.1 to 172.31.150.100
or 192.120.2.1 to 192.120.2.1
Are these ranges still reserved for private use?
 
Part 1: Yes, there is merit in what he is saying. It won't drastically lengthen the boot time, but there will be a delay.

Part 2: Yes, still reserved and will be until IPv4 is no longer in use. Because it was reserved for private use, all companies/municipalities/government departments use it. To change that now would mean you have to disrupt the intranets of all the abovementioned people.

Only difference between the 10, 172 and 192 ranges are the maximum possible devices per subnet (which are 16 581 374, 65 024 and 254 respectively). At home I use 10.0.0.x because it's easier to type than 192.168.0.x, and just made the subnet mask 255.255.255.0 to limit the network size to 254 devices.
 
Part 1: no rubish. As both network have same range, your laptop may delay trying to connect to your NAS (thinking you are in your home network).
Part 2: if you are familiar with your home router: just login and change the DHCP to use 192.168.0.1 (instead 192.168.1.1). Or google the model number of your router and read the manual to follow the instructions. Is not rocket science.

You may need to reconfigure your NAS and possibly map the folders again in all computers that use the NAS.
 
Part 1;
Your laptop won't take longer to boot because it's looking for shared folders or drives. It does this after it has booted up and not during the boot up process.

Also there won't be any confilcts unless you are connected to two or more networks at the same time that share the IP address ranges. So you can actually keep your 192.168.1.0 IPs if you want.

Part 2:
Yes you can use any of these IPs that are reserved for private use. Pick something unique like 10.13.81.1 - 10.13.81.254

Yes you can selelect any IP within the ranges but you can't guarantee that they won't clash with other networks you connect to as anyone can use them on their private networks.
 
Thanks for the feedback guys. I think I will re-do my setup at home in the 10.x.x.x range
 
Classes

dj_jyno said:
Only difference between the 10, 172 and 192 ranges are the maximum possible devices per subnet

(which are 16 581 374, 65 024 and 254 respectively).

At home I use 10.0.0.x because it's easier to type than 192.168.0.x, and just made the subnet mask 255.255.255.0 to limit the network size to 254 devices.
Click to expand...
IF I am not mistaken the

10.x.x.x is a class A range

172.x.x.x is a class B range

192.x.x.x is a class C range

The maximum possible devices per *subnet* is 254 ?

The maximum possible devices per range is ............ <as above>
 
On paper there might be a minuscule difference in boot up, or rather login time.


In the real world however...you are never going to notice.
 
b@nD said:
IF I am not mistaken the

10.x.x.x is a class A range

172.x.x.x is a class B range

192.x.x.x is a class C range

The maximum possible devices per *subnet* is 254 ?

The maximum possible devices per range is ............ <as above>
Click to expand...

172.16 and 192.168...

There's no max possible devices per subnet within reason - It all depends on the subnet mask you use.
IE - 255.255.255.0 = 254 devices
255.255.254.0 = 511 devices
etc
 
IIRC the 172.x.x.x is offlimits due to it being a "loopback" range?

Localhost is always on 172.0.0.1...

I avoid using 172.x.x.x and use either 10.x.x.x or 192.168.x.x
 
Hi There,
I am with DjJyno on this one. Connecting to a network drive won't make the boot time any longer but it may cause a few delays once booted as it checks for the drives. It used to slow it down badly on Windows 95 but I doubt that you are running that on your laptop.

I occasionally have the same addressing issues and I just renew the address on the connection.

Regards

Tim
 
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