Re: [SLUG] LAN config

From: Chris Mathey (slug@mathey.org)
Date: Wed May 31 2006 - 08:41:41 EDT


Eben King wrote:
> On Wed, 31 May 2006, Kwan Lowe wrote:
>
>>> On Tue, 30 May 2006, Eben King wrote:
>>>
>>>> On Tue, 30 May 2006, Chris Mathey wrote:
>>>>
>>>>> Now everything will work perfectly :)
>>>
>>>
>>> Yep, it works. Thanks. But, I can no longer contact the Netgear router
>>> (#2) from anywhere. Is this an expected side effect, or have I done
>>> something wrong?
>>
>>
>> If you mean "contact" for management (i.e., the web page), you need to
>> enable "Remote Management" from an address or address range.
>
>
> Figured it out. I had given the router a netmask of 255.255.255.15
> (last two quads, in binary: 1111 1111.0000 1111). Windows insists that
> any netmask has a contiguous string of 1s. So I couldn't match the
> netmask. Oops. So I performed a hard reset, which made everything
> factory-fresh, then fixed it. Who knows if it honored that bizarre
> netmask.
>
> Now I can contact either router (i.e.: go to their web page) from any
> computer.
>

That makes sense 255.255.255.15 is not a valid mask.
here are the valid masks:

   255.255.255.255.0 11111111.11111111.11111111.00000000 254 hosts
   255.255.255.255.128 11111111.11111111.11111111.10000000 126 hosts
  255.255.255.255.192 11111111.11111111.11111111.11000000 62 hosts
  255.255.255.255.224 11111111.11111111.11111111.11100000 30 hosts
  255.255.255.255.240 11111111.11111111.11111111.11110000 14 hosts
  255.255.255.255.248 11111111.11111111.11111111.11111000 6 hosts
  255.255.255.255.252 11111111.11111111.11111111.11111100 2 hosts
  255.255.255.255.254 11111111.11111111.11111111.11111110 0 hosts

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