The issue is specifically noticable there because Princeton's own docs on the problem say they use a very short lease interval because Princeton wants their client IP addresses to be reachable globally and not hidden behind NAT (address translation)
Those are in short supply and that's what's driving the three hour lease cycle.
So let's switch to IPv6! Oh wait, the Internets haven't transitioned yet. Well, in a few years I suppose when IPv4 finally runs out of addresses to give out.
False. Princeton says definitively that they have not banned the iPad. GWU have blocked all iPhones and iPads from joining their wireless networks because of specific issues with their networks which they are working on correcting. Likewise you are wrong about Cornell. The iPad is not blocked from their networks at all. None of these campuses have "banned" the iPad.
Argue with these guys, not me:
Universities start imposing ban on iPad from campuses
Tuition at Cornell is $49,000 a year with 20,500 students.
Tution at Princeton is $46,000 a year with 7,567 students.
They can't handle a $500 wifi device, of which there will be thousands on these campuses next year?
So will AT&T ban 3G for these devices around these schools? Or are they going to install dozens more towers to cover for the schools lack of up-to-date IT infrastructure?
Oh, give it up. Aside from the Cornell link somebody else posted above, there's this Princeton link. Read the section that's titled, "Have We Banned the iPad at Princeton?" Short answer: no. Instead of getting your information from blogs, which are never the most accurate of sources, try checking the horse's mouth next time.
Rather nasty bug. Guess I'll just be assigning a static address at home. Anywhere else, 3G. That should suffice until the bug fix.
What???
That's like manually recreating the problem that Princeton is citing. The point of having an expiring DHCP address is so that you never have the same IP address for very long. (makes it harder for somebody to potentially hack you via a long-term "fixed" IP address. If you always have the same IP address you are at greater risk ("static" as in: Standing there always in the same place) Makes you an easier target.
In truth this failure to release the IP lease is a minor issue, and I'm really not sure that it isn't a DHCP "server" issue rather than a DHCP "client" issue, but whatever...
The problem comes as the devices get more popular. Not giving up a DHCP lease is a big deal, but I understand why it would be done (especially on networks with ridiculously short lease periods) to conserve battery life.
I think we are coming into the dawn of the era where WiFi just stops working effectively. A single access point can't support that many users-- 50-60 on the good equipment, 20-25 on the cheap stuff. It really requires a lot more effort than it did 3-5 years ago to make things work effectively.
If your access point is doing the DHCP (bad design), your network will come to its knees quickly. If you centralize management of the access points and have reasonable address space for the DHCP it shouldn't be a major issue though.
Were talking major university network here. This is all enterprise class stuff.
What I don't understand is HOW TF Apple has let this go on for almost 20 days without a software update.
I like my iPad, but I'm ready to return it, unless WiFi issues are resolved immediately. It's totally unacceptable for this premium device with one method of connectivity to have issues, severe issues, with that one method of connectivity. Totally. Unacceptable. Apple has a lot of nerve publishing and bragging about it's iPad success, and speaking for the "satisfaction" of its users, while a major launch issue goes uncorrected.
I'm not removing the security on my network just so my iPad won't drop connection every 5 minutes. And No, Apple's support document is not a fix. It's a lying puff piece that distracts from the real issue. The issues have nothing, absolutely nothing, to do with dual-band 3rd party routers.
Comments
You and your use of the passive voice are wrong
http://www.cit.cornell.edu/news/stor...ID_1942=162201
You do mean his passive-aggressive voice.....
The issue is specifically noticable there because Princeton's own docs on the problem say they use a very short lease interval because Princeton wants their client IP addresses to be reachable globally and not hidden behind NAT (address translation)
Those are in short supply and that's what's driving the three hour lease cycle.
So let's switch to IPv6! Oh wait, the Internets haven't transitioned yet. Well, in a few years I suppose when IPv4 finally runs out of addresses to give out.
False. Princeton says definitively that they have not banned the iPad. GWU have blocked all iPhones and iPads from joining their wireless networks because of specific issues with their networks which they are working on correcting. Likewise you are wrong about Cornell. The iPad is not blocked from their networks at all. None of these campuses have "banned" the iPad.
Argue with these guys, not me:
Universities start imposing ban on iPad from campuses
http://blogs.zdnet.com/gadgetreviews/?p=13931
So let's switch to IPv6! Oh wait, the Internets haven't transitioned yet.
There's more than one internet?
Argue with these guys, not me:
Universities start imposing ban on iPad from campuses
http://blogs.zdnet.com/gadgetreviews/?p=13931
Except that this is contradicted by the actual universities.
Argue with these guys, not me:
Universities start imposing ban on iPad from campuses
http://blogs.zdnet.com/gadgetreviews/?p=13931
Tuition at Cornell is $49,000 a year with 20,500 students.
Tution at Princeton is $46,000 a year with 7,567 students.
They can't handle a $500 wifi device, of which there will be thousands on these campuses next year?
So will AT&T ban 3G for these devices around these schools? Or are they going to install dozens more towers to cover for the schools lack of up-to-date IT infrastructure?
Argue with these guys, not me:
Universities start imposing ban on iPad from campuses
http://blogs.zdnet.com/gadgetreviews/?p=13931
Oh, give it up. Aside from the Cornell link somebody else posted above, there's this Princeton link. Read the section that's titled, "Have We Banned the iPad at Princeton?" Short answer: no. Instead of getting your information from blogs, which are never the most accurate of sources, try checking the horse's mouth next time.
Rather nasty bug. Guess I'll just be assigning a static address at home. Anywhere else, 3G. That should suffice until the bug fix.
What???
That's like manually recreating the problem that Princeton is citing. The point of having an expiring DHCP address is so that you never have the same IP address for very long. (makes it harder for somebody to potentially hack you via a long-term "fixed" IP address. If you always have the same IP address you are at greater risk ("static" as in: Standing there always in the same place) Makes you an easier target.
In truth this failure to release the IP lease is a minor issue, and I'm really not sure that it isn't a DHCP "server" issue rather than a DHCP "client" issue, but whatever...
The problem comes as the devices get more popular. Not giving up a DHCP lease is a big deal, but I understand why it would be done (especially on networks with ridiculously short lease periods) to conserve battery life.
I think we are coming into the dawn of the era where WiFi just stops working effectively. A single access point can't support that many users-- 50-60 on the good equipment, 20-25 on the cheap stuff. It really requires a lot more effort than it did 3-5 years ago to make things work effectively.
If your access point is doing the DHCP (bad design), your network will come to its knees quickly. If you centralize management of the access points and have reasonable address space for the DHCP it shouldn't be a major issue though.
Were talking major university network here. This is all enterprise class stuff.
I like my iPad, but I'm ready to return it, unless WiFi issues are resolved immediately. It's totally unacceptable for this premium device with one method of connectivity to have issues, severe issues, with that one method of connectivity. Totally. Unacceptable. Apple has a lot of nerve publishing and bragging about it's iPad success, and speaking for the "satisfaction" of its users, while a major launch issue goes uncorrected.
I'm not removing the security on my network just so my iPad won't drop connection every 5 minutes. And No, Apple's support document is not a fix. It's a lying puff piece that distracts from the real issue. The issues have nothing, absolutely nothing, to do with dual-band 3rd party routers.