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About LinkBacksWhy does everyone use 192.168.0.x for static IP addresses?
I always use 10.0.0.x as it is much easier to type and remember
The fact it gives you another subnet is irelevant. It just seems much cleaner to me
Why does everyone use 192.168.0.x for static IP addresses?
I always use 10.0.0.x as it is much easier to type and remember
The fact it gives you another subnet is irelevant. It just seems much cleaner to me
I dunno, do you need 16 million IP addresses?Originally Posted by Funkstar
Why does everyone use 192.168.0.x for static IP addresses?
I always use 10.0.0.x as it is much easier to type and remember
The fact it gives you another subnet is irelevant. It just seems much cleaner to me
Cheers,
Stephen
yes
well, no, not really. But like i said, it's easier.
Joking aside, I suspect most people never bother to change the default range used by their router.
I know I'm just as guilty of that, although it's the only default setting left on it (before anybody sits outside my house and tries to nick my broadband)
Cheers,
Stephen
OK, i get that. But why do manufacturers use 162.168.x.x? 10.x.x.x actually looks likea special reseved address space, 192... is just a jumble of random numbers to most people.
There probably is a reason, but it's been lost over the years i presume.
It's not like it's importand or anything, just something that poppe into the head after a few pints
So why is 127.0.0.1 the loopback address???
and does anyone actually use the 172.16.0.0 - 172.31.255.255 addresses....
Last edited by tiggerai; 09-09-2007 at 12:05 AM.
This doesn't say why it is 127.0.0.1, but does describe what it is:
http://en.wikipedia.org/wiki/127.0.0.1
Same with this article:
http://en.wikipedia.org/wiki/Reserved_IP_addresses
yes but we knew that...
Want to know WHY they were chosen, must be some geeky reason.
I guess they use it because it's the Class C reserved address range IIRC - and I guess they see it as good practice to use it, even though you can use 10.x.x.x or whatever with a /24 mask to get the same effect (or with /8 if you do need all those addresses!
"If you're not on the edge, you're taking up too much room!"
- me, 2005
Yes, we use them, but for little reason other than obscurity.
Good man.
We like obscurity.
i use them... to make pina coladas
don't know why its all 192.0.0.x
but makes it easier to login to a router when you have to guess it's ip address.
192.168.0.0-192.168.255.255 Each subnet (increment of the 3rd number) has a typical subnet mask of 255.255.255.0 and is known as a Class C address range.
172.16.0.0-172.31.255.255 Each subnet (increment of the 2nd number) has a typical subnet mask of 255.255.0.0 Known as a Class B address range.
10.0.0.0-10.255.255.255 Has just one super large subnet mask of 255.0.0.0 Known as a Class A address range.
They are reserved for private intranet use and will never be issued for use on the real internet.
Anything under those addresses is non routable over the internet (unless through a VPN pipe)
That is by design so as to protect routers and networks using them from unwanted and unecessary traffic distribution.
In the past before a certain RFC (documented many years back now) you never used to be able to define subnets and thus the classes (which had assumed subnets as above) where more precisely used to structure an internal network infrastructure. Usually based roughly on the size of the business needs to use the address space. see here:
http://www.tcpipguide.com/free/t_IPC...essClasses.htm
I would guess all "home" router products today default to some form of 192.168.x.x address because then they are relevantly classified in the old schema with low level address space. Think of it this way:
Typically before the RFC change if you were running a large company with the old IP non subnetting system:
You would use 10.x.x.x for all internal servers and clients on a private WAN backbone (or VPN).
You may then use this apparoach for other smaller isolated networks:
Then for small branch offices/sales offices/shops/outlets etc you may choose to use 172.16.x.x-172.31.x.x
Then for home workers etc they each use an 192.168.x.x address range.
Today this is pretty much irrelevant due to the ability to use customised subnets that allow a typical class range to be broken up into more useful smaller chunks. Albiet with confusing subnet mask like: 255.255.255.222 for instance.
This is not strict and today people do all sorts of strange things but that was the original thinking.
I personally use 172.16.x.x a lot for small to medium businesses and then leave 192.168.x.x for their home office connections. If it is tiered like this then you and other IT people can understand your network easier and end users get used to 192.168.x.x etc. It also alleviates having to do strange subnet masking (and associated calculations) thus over complicating things.
Subnet masks where really introduced for better management on the Internet not for the Intranet per se, but they are part of the new IP standard and thus the Intranet has learned to benefit from their use too, rather than sticking to the strict class based rules of the past.
Refer to this link:
http://www.tcpipguide.com/free/t_IPS...Advantages.htm
Today I think these are just being used for convention and there are no real reasons (other than that stated below) not to use whichever private address range and appropriate subnet mask you want to. The key point is you wouldn't want to use too small a range for a large company and you wouldnt use an internal range out side these reserved ranges (whichever you choose). Most companies use 10.x.x.x addresses just to allow flexibility for future growth and I guess as I do, smaller ones may use 172.16.x.x.
Take the scenario of a typical home worker using a VPN to talk to a large company over an Internet VPN. If all home users/devices where to use 10.0.0.1 by default then every VPN that is created would require all the home router network addresses (and associated PC's etc) in that environment to be altered to not conflict with the businesses IP range for it servers etc. Where as if they know they are on the different and lesser 192.168.x.x networks then they can be used to access the corporate WAN through the VPN while minimising any concern about routing and duplicate IP issues.
Last edited by roddines; 11-09-2007 at 03:55 AM.
By the way Cougarslam..If you have to guess a router's IP address...assuming it has DHCP enable and just connect a PC (assuming it has get IP automatically set on the network card), then check out its default gateway value. In Windows you can use start->run...->cmd.exe->OK...
C:\> ipconfig /all
...will list it then you can just plug that into the web browser to access it's config pages. If it is not DHCP enabled then 100% you are right that it makes it easier to find if there is a convention. However there are many routers that use 192.168.x.1 where x is 0 or 1 or 10 or 100 or whatever from 1-255. And some even change the last digit to make it doubly hard.
Last edited by roddines; 11-09-2007 at 03:44 AM.
And then I guess the irony is you need to use the Internet to do a search to find out what it is probably going to be just when your gateway/router is not working properly. Or at least how to do a factory reset. I guess there is always the
at least until BT changes everything over to IP on the 21C network. But then your probably going to want to get the support phone number off the internet too. Especially as we are all going green and there are no more printed manuals.
Last edited by roddines; 09-09-2007 at 06:50 AM.
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