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From: Sak Wathanasin on 30 Jun 2010 04:54
On 30 June, 09:40, Woody <use...(a)alienrat.co.uk> wrote:

> When I come in from using my iPad at work on the mifi, and come come to
> the home network, the iPad will initially recognise it and work. Then
> when It goes to sleep and I wake it up again, it says it is connected
> but if I go anywhere it will tell me the network isn't there. I go to
> prefs, turn networking off and then on again and everything is fine,

I saw something similar with the iPTs when the girls first got them.
It turned out that they were picking up the wireless, but weren't
getting allocated an IP by the DHCP server. I ended up getting the
DHCP server to allocated static IPs and the problem went away.

I haven't tried checking if the latest OS updates fixed the problem
because in the meantime I'd set up a second SSID on my V2820 to allow
visitors Internet access while blocking them from my VPN to the
office. The 2nd SSID is on a separate VLAN which blocks them from my
internal network and the DHCP server allocates them dynamic IPs in a
different subnet, which is then firewalled off from the VPN.
From: smurf on 30 Jun 2010 05:09
Sak Wathanasin wrote:
> On 30 June, 09:03, Ben Shimmin <b...(a)llamaselector.com> wrote:
>
>> It's quite instructive to compare the volume of complaints about the
>> iPad's wifi problems with that of those about the iPhone 4's signal
>> loss issue. (I bought an iPad and have had zero wifi issues -- in
>> fact,
>> its wifi is better than on my iPhone.)
>
> What Wifi problem? Picked it up in my house straight away and it's 'N'
> so streaming live TV via EyeTV is flawless on the iPad (vs the odd
> stutter on the iPh-3G).

Certainly a wifi problem with some Ipads, but it is easily sorted by using
static ip addresses.


From: Sak Wathanasin on 30 Jun 2010 05:12
On 30 June, 09:47, Jim <j...(a)magrathea.plus.com> wrote:

> It's supposed to have a problem with handling DHCP leases if the lease
> expires while the iPad isn't awake. It hangs onto the old IP address and
> doesn't request a new one, leading to Much Hilarity.

In which case, my fix (R), (C) (TM) will work (see my other post).
From: Jim on 30 Jun 2010 05:17
On 2010-06-30, Sak Wathanasin <sw(a)nan.co.uk> wrote:
> On 30 June, 09:47, Jim <j...(a)magrathea.plus.com> wrote:
>
>> It's supposed to have a problem with handling DHCP leases if the lease
>> expires while the iPad isn't awake. It hangs onto the old IP address and
>> doesn't request a new one, leading to Much Hilarity.
>
> In which case, my fix (R), (C) (TM) will work (see my other post).

Yep. Either static or DHCP-MAC-Address-Fake-Static (as I like to call it)
cures the problem. Or, rather, makes it not manifest.

Jim
--
Twitter:@GreyAreaUK

"If you have enough book space, I don't want to talk to you."
Terry Pratchett
From: fflavio on 30 Jun 2010 06:34
Woody <usenet(a)alienrat.co.uk> wrote:
> Sak Wathanasin <sw(a)nan.co.uk> wrote:
>> On 30 June, 09:03, Ben Shimmin <b...(a)llamaselector.com> wrote:
>>
>>> It's quite instructive to compare the volume of complaints about the
>>> iPad's wifi problems with that of those about the iPhone 4's signal
>>> loss
>>> issue. (I bought an iPad and have had zero wifi issues -- in fact,
>>> its wifi is better than on my iPhone.)
>>
>> What Wifi problem? Picked it up in my house straight away and it's
> > 'N'
>> so streaming live TV via EyeTV is flawless on the iPad (vs the odd
>> stutter on the iPh-3G).
>
> I do, but it is minor.
>
> When I come in from using my iPad at work on the mifi, and come come
> to
> the home network, the iPad will initially recognise it and work. Then
> when It goes to sleep and I wake it up again, it says it is connected
> but if I go anywhere it will tell me the network isn't there. I go to
> prefs, turn networking off and then on again and everything is fine,
>
> It doesn't happen every time, but more than enough to make it a
> coincidence and never the other way round (ie, always works at work)
>
> It will also occasionally drop the connection, but not often

Knave the same problem but the other way around: it often loses
connection (or usable connection) when I'm using it with the mifi; I
often find that on wake up I have to follow the same procedure as you
described: switching wifi off and then off cures it. It does look like a
dhcp lease issue. Never seems to happen at home.

--
guitar lessons camdenguitar.co.uk
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