Why not use a different subnet for DHCP?
Richard A. Cromi
System Analyst
Stark County District Library
715 Market Ave. N.
Canton, OH. 44702
Phone: 330-458-3142
Email: [log in to unmask]
-----Original Message-----
From: Mary Rogers [mailto:[log in to unmask]]
Sent: Tuesday, February 09, 2010 2:00 PM
To: [log in to unmask]
Subject: Re: [LIBNT-L] Question re: wireless
To all that have given suggestions, I will try them and see if they work.
Let me give you a little history on this. I walked into this job about 7
years ago and the network was already in place. All of our hard-wired
computers use static ip addy's and there was no real thought when computers
were deployed as to what ip to give them. Because of that, when we went to
implement wireless using DHCP, the network guy could only find 12 contiguous
ip addy's to use -- hence only 12 "slots". If I had it to do over again ---
I'd certainly have a higher number!
Thanks again to all that have given advice :-)
Mary E. Rogers
Associate Director
Trumbull Library System
33 Quality St.
Trumbull, CT 06611
203-452-5116 (voice)
203-452-5125 (fax)
[log in to unmask]
-----Original Message-----
From: Library NT [mailto:[log in to unmask]] On Behalf Of Bob
Rasmussen
Sent: Monday, February 08, 2010 5:52 PM
To: [log in to unmask]
Subject: Re: [LIBNT-L] Question re: wireless
Have you considered the fact that your library is full of patrons with
iPhones? These can connect to Wi-fi very easily.
Also, the standard behavior for a DHCP device (such as a laptop) when its
lease expires is to simply renew it.
Finally, 12 slots seems appropriate for a coffee shop, not an entire
library. Am I missing something?
On Mon, 8 Feb 2010, Mary Rogers wrote:
> Hi Robert;
>
> Thanks for the suggestion but I looked and the duration is already set
> to one hour. I'm even more puzzled now that I see that! Can there be
> some type of "bot" that is grabbing the leases automatically? I don't
> get it!
>
> Mary E. Rogers
> Associate Director
> Trumbull Library System
> 33 Quality St.
> Trumbull, CT 06611
> 203-452-5116 (voice)
> 203-452-5125 (fax)
> [log in to unmask]
>
>
>
> -----Original Message-----
> From: [log in to unmask] [mailto:[log in to unmask]]
> Sent: Monday, February 08, 2010 1:59 PM
> To: [log in to unmask]
> Subject: FW: [LIBNT-L] Question re: wireless
>
>
> I tried posting to the list, but my e-mail that I signed up with must
> be different than what the campus uses now. If this works, can you
> post it back to the list?
>
> ________________________________
>
> From: Robert Bowen
> Sent: Mon 2/8/2010 1:53 PM
> To: Library NT; [log in to unmask]
> Subject: RE: [LIBNT-L] Question re: wireless
>
>
> Mary,
>
> If you look at page 131 here -
> http://books.google.com/books?id=NwHd-13IO-MC&pg=PA125&lpg=PA125&dq=dh
> cp+lea
> s
> e+duration+windows&source=bl&ots=thUNxtpPA1&sig=X40xU7wc0r-52mkz5cm4RC
> e+duration+xD
> e+duration+Zg4&h
> l=en&ei=D11wS4HzI5SXtgfNyaWABg&sa=X&oi=book_result&ct=result&resnum=5&
> ved=0C
> B
> cQ6AEwBA#v=onepage&q=dhcp%20lease%20duration%20windows&f=false it shows
you
> the DHCP interface. Just right click on the Scope and select properties.
> Towards the bottom you'll see lease duration. You'll need to stop and
> restart the DHCP service for the setting to take effect.
>
> This may not do what you are looking for. See the note on page 125
> where it states that the server keeps the lease as allocated. What
> brand are your access points? You may be able to limit client
> connections that way.
>
> Robert
>
> ________________________________
>
> From: Library NT on behalf of Mary Rogers
> Sent: Mon 2/8/2010 10:49 AM
> To: [log in to unmask]
> Subject: [LIBNT-L] Question re: wireless
>
>
> We have wireless at our library and about a year ago, I had the
> network "guru" over at our town hall set it up via DHCP. We only have
> 12 "slots" on our network for those folks wanting to use wireless. We
> don't authenticate and it has worked well for the most part. Once in
> a while I would have to release a lease because all of the slots were
> used up. Well -- about 3 weeks ago, all of the sudden the leases are
> all in use constantly! When I go into the DHCP settings it almost
> looks like something is automatically taking up all the slots and I
> don't know how to stop that from happening.
>
> Our server that this is set up on is a Windows 2000 server if that
> helps. Also -- we use Access Points throughout the building rather
> than wireless routers. Is there a way to have the leases
> automatically expire after an hour? That is how much time we allow
> patrons to use the computers in our Technology Center.
>
> Any help on this would be much appreciated!
>
> Mary E. Rogers
> Associate Director
> Trumbull Library System
> 33 Quality St.
> Trumbull, CT 06611
> 203-452-5116 (voice)
> 203-452-5125 (fax)
> [log in to unmask]
>
>
>
>
Regards,
....Bob Rasmussen, President, Rasmussen Software, Inc.
personal e-mail: [log in to unmask]
company e-mail: [log in to unmask]
voice: (US) 503-624-0360 (9:00-6:00 Pacific Time)
fax: (US) 503-624-0760
web: http://www.anzio.com
street address: Rasmussen Software, Inc.
10240 SW Nimbus, Suite L9
Portland, OR 97223 USA
