Vista clients became unresponsive after network move

> On Dec 3, 4:58*pm, Ace Fekay [MCT] <ace...@mvps.RemoveThisPart.org>
> wrote:
>>> On Nov 24, 9:18*am, Ace Fekay [MCT] <ace...@mvps.RemoveThisPart.org>
>>> wrote:
>>>>> On Nov 20, 7:49*pm, Ace Fekay [MCT] <ace...@mvps.RemoveThisPart.org>
>>>>> wrote:
>>>>>>>> Yes, but not in that order. You are correct, two DHCP servers with
>>>>>>>> identical or overlapping scopes will conflict. In your case, I would
>>>>>>>> simply disable DHCP on the router, then enable it on the DC. The
>>>>>>>> advantages are the DC's DHCP (Windows DHCP) interoperates with Dynamic
>>>>>>>> DNS, as well as uses AD Kerberos security, which the router does not
>>>>>>>> (nor can it) support. If the router does support Dynamic DNS, it's
>>>>>>>> optinos are limited with controlling how to registerclientsinto DNS
>>>>>>>> for the foward lookup zone, and reverse lookup zone.
>>>>>>>> It's much easier. :-)
>>
>>>>>>> Ace is exactly right. *DHCP running on a windows server (it can be any
>>>>>>> member server, it need not be the DC) can integrate itself with DNS
>>>>>>> automagically. * It really is a superior solution to router or other
>>>>>>> OS-based DHCP (and DNS) services.
>>>>>>> It really does make desktop IP addressing a lot easier to administer.
>>>>>>> If you have hosts that need to stay on the same addresses you can do
>>>>>>> that by setting up a DHCP reservation. *That way they always get the
>>>>>>> same IP address. *This is very handy for dumb devices like printers.
>>>>>>> *Plug their network MAC address into a reservation and never worry
>>>>>>> about having to configure the front panel again.
>>>>>>> My only complaint about the DHCP service is there's not an easy way to
>>>>>>> convert an existing lease to a reservation. *Just makes for some added
>>>>>>> work through retyping.
>>
>>>>>>> -Bill
>>
>>>>>> Good point. One of the very few nuances compared to all the goodies
>>>>>> Windows DHCP provides!!
>>
>>>>>> :-)
>>
>>>>>> Ace
>>
>>>>> Disabling Autotuning did not solve my issue.
>>>>> I will play around with DHCP more. I already entered reservations in
>>>>> DHCP, and put the DHCP on the router in "Forwarder" mode. I will start
>>>>> setting theclientsone by one so that they can obtain IP from the
>>>>> DHCP. This works on wiredclients, but now all the wirelessclients
>>>>> are gone e.g. they cannot even locate the SSID when the DHCP on the
>>>>> router is either disabled or in Forwarder mode.
>>>> Refresh my memory, please. What is DHCP Forwarding mode on the router?
>>>> From all of us suggesting help, we all said to eliminate the router for
>>>> DHCP. Unless I misunderstand what Forwarding mode does.
>>>> Is the router a wireles AP, too? If so, set it to 'corporate' mode (or
>>>> whatever it's called that will not make it NAT to wireless folks) so
>>>> the wireless folks are on the same subnet as the wired subnet.
>>>> What kind of router is it?
>>
>>>> Ace
>>
>>> It seems that the router was the problem. I haven't seen this
>>> particular problem since I replaced the router. I guess that's what I
>>> should have tried first. It was a Linksys router with DD-WRT firmware.
>>> Apparently DHCP forwarding mode is when you want to use a DHCP server
>>> outside of the network. If there is a DHCP on the network, it is
>>> advised to turn the router's DHCP off completely.
>>> Now I put a new wired router with DHCP off (DNS and DHCP is handled by
>>> the DC), and I connected the old router to the new router to serve as
>>> a wireless access point (WAN/DHCP off). Both wired and wireless
>>> clients can now get IPs from the server. Just the way I wanted it! IP
>>> reservations seem to be working fine too.
>>> Another annoyance I found during this process was that once a client
>>> is told to use the DHCP instead of static IP, it will use an
>>> unauthenticated network connection (Global.Local 2) until it's
>>> restarted (or else its network-related capabilities will be limited).
>>> Once it's restarted it detects the domain network Global.Local fine.
>>> Thanks for all the help.
>>
>>> Deniz
>>
>> So DHCP forwarding is like an IP helper (on Cisco) or a DHCP Relay
>> Agent (under Windows).
>>
>> Disabling DHCP on the router is what we've been saying, correct?
>>
>> Where is global.local2 coming from? Is there another DHCP on the
>> network? Sorry, but I'm not sure what you mean by an unauthenticated
>> network connection.
>>
>> Ace
>>
>> --
>> Ace
>>
>> This posting is provided "AS-IS" with no warranties or guarantees and
>> confers no rights.
>>
>> Please reply back to the newsgroup or forum for collaboration benefit
>> among responding engineers, and to help others benefit from your
>> resolution.
>>
>> Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
>> MCSA 2003/2000, MCSA Messaging 2003
>> Microsoft Certified Trainer
>>
>> For urgent issues, please contact Microsoft PSS directly. Please
>> checkhttp://support.microsoft.comfor regional support phone numbers.
>
> Yes, you told me to disable the DHCP. In current setup it works like a
> charm.
> As for the "domain.local 2" problem, I don't know the cause but I
> don't care much since it goes away after one restart. You can find
> similar discussions all over the internet (one is at
> http://www.experts-exchange.com/OS/M..._23212198.html)
> Current setup is working fine so thank you very much again for all the
> help.

I haven't personally seen the "2" problem, but if it's disappearing and
not causing a concern, you can ignore it. I'll look around and if I
find anything else, I'll post back.

Also, as an FYI regarding posting Experts-Exchange links, you can't see
the 'answers' or responses when you scroll down unless you have an
account. To get around that, copy and paste the experts Exchange link
into a Google search, and click on the first result, now you can see
the responses when you scroll down. For some reason, search referrals
allow you to get into it.

Ace

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit
among responding engineers, and to help others benefit from your
resolution.

Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.