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#177580 - 2007-07-05 01:15 AM Re: Can a file take to long to open? [Re: Witto]
Gargoyle Offline
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Registered: 2004-03-09
Posts: 1597
Loc: Valley of the Sun (Arizona, US...
Class B subnetted into Class C address space.

Assuming 129.65.0.0 /16
Would give you
  • 129.65.0.0 /24
    129.65.1.0 /24
    129.65.2.0 /24
    129.65.3.0 /24
    ...
    129.65.255.0 /24


At which point you can then further subnet your class C address space.

Example 129.65.65.0 /24
  • 129.65.65.0 /30
    129.65.65.4 /30
    129.65.65.8 /30
    129.65.65.12 /30
    ...
    129.65.65.255.252 /30
    [\list]
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#177608 - 2007-07-05 01:49 PM Re: Can a file take to long to open? [Re: Gargoyle]
Witto Offline
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Registered: 2004-09-29
Posts: 1828
Loc: Belgium
OK, now I see, you are subnetting like Doc said.
You should write your IP Address binary.
Start counting at the left hand side.
If the first bit = 0, the Address is Class A.
If the first bit = 1 and the second = 0, the Address is Class B.
If the first and the second bit = 1 and the third = 0, the Address is Class C.
Any IP Address with 129 as first octet is a class B address.
129(10) = 10000001(2)

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#177609 - 2007-07-05 02:25 PM Re: Can a file take to long to open? [Re: Witto]
Gargoyle Offline
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Registered: 2004-03-09
Posts: 1597
Loc: Valley of the Sun (Arizona, US...
Hey Witto, congrats on the 1K mark.

Yea I know all about binary and subnetting, after all my primary function at work is network security engineer.

Although you did not mention Class D or Class E address space.. \:\)
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#177610 - 2007-07-05 02:45 PM Re: Can a file take to long to open? [Re: Gargoyle]
Lonkero Administrator Offline
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Posts: 22346
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class E is most likely filled with silicon...
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#177627 - 2007-07-05 07:09 PM Re: Can a file take to long to open? [Re: Richard H.]
Gargoyle Offline
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Posts: 1597
Loc: Valley of the Sun (Arizona, US...
@Richard H.
Thanks, that fixed the file open issue, exposed a few other problems, but they were easy by comparison.

My thoughts originally had been that because the file path includes a space in it, I had to wrap the whole thing in quotes, beyond the quotes to seperate my strings and my vars. Sort of like
"'stuff' + other + 'more stuff'"
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#177633 - 2007-07-06 01:05 AM Re: Can a file take to long to open? [Re: Witto]
Glenn Barnas Administrator Offline
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Posts: 4401
Loc: New Jersey
I agree.. subnetting a class A or B network gives you a subnetted class A or B network, not a class C. It's semantics, but it is what it is. Prolly why most network people use CIDR netmasks and avoid the whole class structure.

Glenn
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#177714 - 2007-07-11 04:56 AM Re: Can a file take to long to open? [Re: Glenn Barnas]
NTDOC Administrator Offline
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Posts: 11628
Loc: CA
That was a PITA

Worked on issue with intermittent connectivity for my .0 subent for a few hours and it turns out that one of my VPN switches had an invalid mask. Didn't even think that switch was involved in the internal setup but it was.

Just never have to deal with routing much so you don't use it you lose it.

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#177720 - 2007-07-11 08:14 AM Re: Can a file take to long to open? [Re: NTDOC]
Gargoyle Offline
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Registered: 2004-03-09
Posts: 1597
Loc: Valley of the Sun (Arizona, US...
We are in the process of setting up our "Virtual Office"(VO) to use seperate (but connected) sites for connectivity back to the network.

Being that the VO is on an external network and it can come in via one of two entry points, and those enty points are of course protected by a firewall, which requires that you follow the same path out as you took in...

Beginning to get the idea? So much fun
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#177730 - 2007-07-11 09:49 AM Re: Can a file take to long to open? [Re: Gargoyle]
NTDOC Administrator Offline
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Registered: 2000-07-28
Posts: 11628
Loc: CA
Yeah could be fun, but not when I'm under pressure to fix it because the production network is having connectivity issues.

Better if one had to work with it daily, then you'd know it better and so many areas to configure/play in.

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