[Novalug] LAN subnetting

Alex Smith (K4RNT) shadowhunter@gmail.com
Tue Mar 4 21:09:33 EST 2014


I meant class A space when I said class B. I wanted to do it to practice
using CIDR.

" ' With the first link, the chain is forged. The first speech censured,
the first thought forbidden, the first freedom denied, chains us all
irrevocably.' Those words were uttered by Judge Aaron Satie as wisdom and
warning... The first time any man's freedom is trodden on we’re all
damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG
episode "The Drumhead"
- Alex Smith
- Dulles Technology Corridor (Chantilly/Ashburn/Dulles), Virginia USA


On Tue, Mar 4, 2014 at 9:07 PM, Alex Smith (K4RNT)
<shadowhunter@gmail.com>wrote:

> I didn't use the full class B address space in my subnet. I did 10.0.0.x
> through 10.0.2.x. That's why it's a /22 instead of a /24.
>
> " ' With the first link, the chain is forged. The first speech censured,
> the first thought forbidden, the first freedom denied, chains us all
> irrevocably.' Those words were uttered by Judge Aaron Satie as wisdom and
> warning... The first time any man's freedom is trodden on we’re all
> damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG
> episode "The Drumhead"
> - Alex Smith
> - Dulles Technology Corridor (Chantilly/Ashburn/Dulles), Virginia USA
>
>
> On Tue, Mar 4, 2014 at 8:56 PM, Derek LaHousse <dlahouss@mtu.edu> wrote:
>
>> Sounds like a job for IPv6 and prefix delegation.  But uh... why is
>> 10.x.y.z a /22?  Shouldn't that be a /8?  172.16-32.a.b are 16 /16's,
>> and 192.168.foo.bar are 255 /24's
>>
>> CIDR!
>>
>> On Tue, 2014-03-04 at 19:47 -0500, Alex Smith (K4RNT) wrote:
>> > Understood. When I was living with a fellow infosys major at
>> > university (Middle Tennessee State University, Murfreesboro,
>> > Tennessee) I set up a /22 subnet, so any of my roommates could set up
>> > as many devices they wanted on a seperate class C network (10.0.1.x to
>> > one person, 10.0.2.x for another, etc.)
>> >
>> >
>> > I still do that depending on my environment.
>> >
>> > " ' With the first link, the chain is forged. The first speech
>> > censured, the first thought forbidden, the first freedom denied,
>> > chains us all irrevocably.' Those words were uttered by Judge Aaron
>> > Satie as wisdom and warning... The first time any man's freedom is
>> > trodden on we’re all damaged." - Jean-Luc Picard, quoting Judge Aaron
>> > Satie, Star Trek: TNG episode "The Drumhead"
>> > - Alex Smith
>> > - Dulles Technology Corridor (Chantilly/Ashburn/Dulles), Virginia USA
>> >
>> >
>> > On Tue, Mar 4, 2014 at 7:39 PM, Ed James <edward.james@gmail.com>
>> > wrote:
>> >         I'm leery of messing with any of the firewalls since I have a
>> >         wife that uses the connection a lot and...
>> >
>> >
>> >         The subnet mask is starting to look like a quick and easy
>> >         ("what's the worst that could happen?") fix, but I'm coming to
>> >         the conclusion that everything really should be on the same
>> >         subnet, and I've forgotten why it's not.  I think it dates
>> >         back to me swapping out an old router and installing a new
>> >         one, or possibly having had them both on line at the same time
>> >         while doing some kind of testing.
>> >
>> >         Ed James
>> >
>> >
>> >
>> >         On Tue, Mar 4, 2014 at 7:25 PM, Alex Smith (K4RNT)
>> >         <shadowhunter@gmail.com> wrote:
>> >
>> >                 Sounds like maybe changing the subnet mask, and/or
>> >                 disabling the firewall's dropping of internally routed
>> >                 IP addresses. I don't know how yours it set up, so I
>> >                 can't be 100% certain that this will work.
>> >
>> >                 ...
>> >
>> >
>> >
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>> >
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>>
>>
>>
>
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