[windows2000] Re: 192.168.*.* - why?

  • From: "Wayland Phillips" <wayland.phillips@xxxxxxxx>
  • To: windows2000@xxxxxxxxxxxxx
  • Date: Mon, 18 Nov 2002 10:01:50 -0500


That's it.  I just had the range confused in my head.  I don't feel quite
as stupid now.


Wayland
MCSE, A+





"Ken Klika" <ken.klika@xxxxxxxxxx>@freelists.org on 11/18/2002 09:55:32 AM

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Subject:    [windows2000] Re: 192.168.*.* - why?



Wayland, was this what you were talking about?

With APIPA, DHCP clients can automatically self-configure an IP address =
and subnet mask when a DHCP server isn't available. When a DHCP client =
boots up, it first looks for a DHCP server in order to obtain an IP =
address and subnet mask. If the client is unable to find the =
information, it uses APIPA to automatically configure itself with an IP =
address from a range that has been reserved especially for Microsoft. =
The IP address range is 169.254.0.1 through 169.254.255.254. The client =
also configures itself with a default class B subnet mask of =
255.255.0.0. A client uses the self-configured IP address until a DHCP =
server becomes available.=20


Ken

-----Original Message-----
From: Wayland Phillips [mailto:wayland.phillips@xxxxxxxx]
Sent: Monday, November 18, 2002 9:52 AM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: 192.168.*.* - why?




~sigh~  Looking at other replies, I now know that I am very very wrong.
And I was told that one by an instructor.  I think I'm gonna hafta go
relearn everything now.


Wayland
MCSE, A+





"Wayland Phillips" <wayland.phillips@xxxxxxxx>@freelists.org on =
11/18/2002
09:47:24 AM

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Subject:    [windows2000] Re: 192.168.*.* - why?




Microsoft bought that sequence of IP addresses so they could use APIPA =
when
internet connection was not available.  And since admins know that no =
one
will be using those addresses, they know they're safe.


Wayland
MCSE, A+





"Costanzo, Ray" <rcostanzo@xxxxxxxxxxx>@freelists.org on 11/18/2002
08:59:23 AM

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Subject:    [windows2000] 192.168.*.* - why?



Hi list,

I'm just curious about something.  It seems that most networks use
192.168.*.* for their internal addresses.  Why?  It doesn't really
matter, does it?  Isn't 192.168.*.* completely arbitrary?  My theory on
how this came to be the norm is that MS used those addresses in some
samples in some books or something, and people started using that and it
just became the norm.  But then there's that whole Internet connection
sharing feature that came out in what, W98SE?  With that, the computer
that's sharing its Internet connection will be 192.168.1.1.  So, I
imagine that it's coded somewhere into other OS'es to look to see if
192.168.1.1 can be used as a gateway when the user does not specify an
IP configuration.  So what came first?  192.168.*.* or computers looking
to 192.168.1.1 as a gateway?  Or what my real question is is why
192.168.*.*?

Thanks,

Ray at work


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