I agree. Apple needs to fix this issue. It is not acceptable for a DHCP client
to behave in this manner (and this is not the first DHCP problem with an Apple
device).
Just to throw in my 2 cents worth with respect to lease times... we have 7,146
concurrent users on our Bloomington wireless netw
Paraphrasing Mr. Badman from earlier this month:
"In response to Apple's guidance, we've given out the user name and password to
our DHCP servers so IPad users can configure our DHCP settings as they need to
fix their connectivity problems."
Actually, some of the ideas discussed are neat and pr
>> Even with multiple smaller subnets, you can prevent IP address hogging as
>> long as
>> the DHCP server provides a mechanism to remove client leases from the other
>> pool
>> at the point it hands out a lease to the same device in the new one.
These two options are available in the ISC dhcp s
We are using /24s in our vlan pools and have 15 minute lease times. This is due
to the number of transient devices (e.g., iphones and ipods) that hop online
for barely a minute and then go back to sleep and disassociate. We had issues
where these would exhaust our dhcp pools, even with these sho
What size subnets are you using for wireless ?
In order to use our public /21's efficiently we have our lease time set to 10
MINUTES.
-Neil
--
Neil Johnson
Network Engineer
Information Technology Services
The University of Iowa
Work: 319 384-0938
Mobile: 319 540-2081
Fax: 319 355-2618
E-mail: n
Admittedly, that sounds pretty cool Do you have a particular type
of DHCP in mind that support that? I don't run the dhcp server, but if
there was a way to do what you're suggesting, I would present that
solution to the person that does
On 4/19/2010 1:15 PM, Jeffrey Sessler wrote:
Even with multiple smaller subnets, you can prevent IP address hogging as long
as the DHCP server provides a mechanism to remove client leases from the other
pool at the point it hands out a lease to the same device in the new one.
Jeff
>>> Caroline Owens 4/19/2010 9:45 AM >>>
They could cr
They could create longer lease times and not have an issue if
they have only one flat wireless subnet.
But if they have several smaller subnets, these longer leases could
really add up if a device acquires an IP address from each subnet
within a small window of time. You wouldn't want a dev
There was an interesting study done at Ga Tech about 3 years ago
(http://conferences.sigcomm.org/imc/2007/papers/imc17.pdf) on DHCP lease time
optimization -- don't know if anyone has done anything more with this research
or similar studies elsewhere, but would be interesting to know if there wa
It would seem that Princeton could temporarily (or permanently) avoid the
problem, and thus all the media hype and blocking of the iPads, by simply
increasing their DHCP lease time from their stated 1-3 hour time to something
more reasonable. Unless your base of devices include a large number of
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