DHCP Renew after VLAN Change

Is there any way to enable win2003 oder winxp to renew its IP config
automatically after changing the VLAN on the switch ?

thanks
mc

"MC" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Is there any way to enable win2003 oder winxp to renew its IP config
> automatically after changing the VLAN on the switch ?
>

Reduce the lease period at least one (old) lease period
before performing such changes.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

> thanks
> mc
>
>

Reboot the hosts effected by the VLAN change.
Don't worry about ones not effected by the change.
That is about as automatic as it gets.

I have also used Herb's method in the past too.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/t...dance/2004.asp
http://www.microsoft.com/isaserver/t...dance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp

Deployment Guidelines for ISA Server 2004 Enterprise Edition
http://www.microsoft.com/technet/pro...isaserver.mspx
-----------------------------------------------------


"MC" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Is there any way to enable win2003 oder winxp to renew its IP config
> automatically after changing the VLAN on the switch ?
>
> thanks
> mc
>
>

"Phillip Windell" <@.> wrote in message
news:(E-Mail Removed)...
> Reboot the hosts effected by the VLAN change.
> Don't worry about ones not effected by the change.
> That is about as automatic as it gets.
>
> I have also used Herb's method in the past too.

I would also suggest just running "ipconfig /renew" rather
than doing a reboot.

As to my original suggestion, I doubt if he planned ahead
(most people don't) but that is the question he asked <grin>

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

>
> --
> Phillip Windell [MCP, MVP, CCNA]
> www.wandtv.com
> -----------------------------------------------------
> Understanding the ISA 2004 Access Rule Processing
> http://www.isaserver.org/articles/IS...cessRules.html
>
> Microsoft Internet Security & Acceleration Server: Guidance
> http://www.microsoft.com/isaserver/t...dance/2004.asp
> http://www.microsoft.com/isaserver/t...dance/2000.asp
>
> Microsoft Internet Security & Acceleration Server: Partners
> http://www.microsoft.com/isaserver/partners/default.asp
>
> Deployment Guidelines for ISA Server 2004 Enterprise Edition
> http://www.microsoft.com/technet/pro...isaserver.mspx
> -----------------------------------------------------
>
>
> "MC" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>> Is there any way to enable win2003 oder winxp to renew its IP config
>> automatically after changing the VLAN on the switch ?
>>
>> thanks
>> mc
>>
>>
>
>

The demand is to do the VLAN change dynamically based on Policy Rules
enforced by an Enterasys Policy Manager.

The client computer authenticates via 802.1X using a computer certificate to
a Radius Server (win2003 ias). After the client is successfully
authenticated the IAS Server sends some Radius attributes to an Enterasys
Policy Manager. The Policy Manager automatically changes the VLAN of the
specific client on the switch.
My problem is, that the client doesn't recognize the VLAN change and
therefore it doesn't renew its IP address....

Thanks,
MC



"Herb Martin" <(E-Mail Removed)> wrote in message
news:Oa4$(E-Mail Removed)...
> "Phillip Windell" <@.> wrote in message
> news:(E-Mail Removed)...
>> Reboot the hosts effected by the VLAN change.
>> Don't worry about ones not effected by the change.
>> That is about as automatic as it gets.
>>
>> I have also used Herb's method in the past too.
>
> I would also suggest just running "ipconfig /renew" rather
> than doing a reboot.
>
> As to my original suggestion, I doubt if he planned ahead
> (most people don't) but that is the question he asked <grin>
>
> --
> Herb Martin, MCSE, MVP
> Accelerated MCSE
> http://www.LearnQuick.Com
> [phone number on web site]
>
>>
>> --
>> Phillip Windell [MCP, MVP, CCNA]
>> www.wandtv.com
>> -----------------------------------------------------
>> Understanding the ISA 2004 Access Rule Processing
>> http://www.isaserver.org/articles/IS...cessRules.html
>>
>> Microsoft Internet Security & Acceleration Server: Guidance
>> http://www.microsoft.com/isaserver/t...dance/2004.asp
>> http://www.microsoft.com/isaserver/t...dance/2000.asp
>>
>> Microsoft Internet Security & Acceleration Server: Partners
>> http://www.microsoft.com/isaserver/partners/default.asp
>>
>> Deployment Guidelines for ISA Server 2004 Enterprise Edition
>> http://www.microsoft.com/technet/pro...isaserver.mspx
>> -----------------------------------------------------
>>
>>
>> "MC" <(E-Mail Removed)> wrote in message
>> news:%(E-Mail Removed)...
>>> Is there any way to enable win2003 oder winxp to renew its IP config
>>> automatically after changing the VLAN on the switch ?
>>>
>>> thanks
>>> mc
>>>
>>>
>>
>>
>
>

Short leases or /refresh are you major options.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

"MC" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> The demand is to do the VLAN change dynamically based on Policy Rules
> enforced by an Enterasys Policy Manager.
>
> The client computer authenticates via 802.1X using a computer certificate
> to a Radius Server (win2003 ias). After the client is successfully
> authenticated the IAS Server sends some Radius attributes to an Enterasys
> Policy Manager. The Policy Manager automatically changes the VLAN of the
> specific client on the switch.
> My problem is, that the client doesn't recognize the VLAN change and
> therefore it doesn't renew its IP address....
>
> Thanks,
> MC
>
>
>
> "Herb Martin" <(E-Mail Removed)> wrote in message
> news:Oa4$(E-Mail Removed)...
>> "Phillip Windell" <@.> wrote in message
>> news:(E-Mail Removed)...
>>> Reboot the hosts effected by the VLAN change.
>>> Don't worry about ones not effected by the change.
>>> That is about as automatic as it gets.
>>>
>>> I have also used Herb's method in the past too.
>>
>> I would also suggest just running "ipconfig /renew" rather
>> than doing a reboot.
>>
>> As to my original suggestion, I doubt if he planned ahead
>> (most people don't) but that is the question he asked <grin>
>>
>> --
>> Herb Martin, MCSE, MVP
>> Accelerated MCSE
>> http://www.LearnQuick.Com
>> [phone number on web site]
>>
>>>
>>> --
>>> Phillip Windell [MCP, MVP, CCNA]
>>> www.wandtv.com
>>> -----------------------------------------------------
>>> Understanding the ISA 2004 Access Rule Processing
>>> http://www.isaserver.org/articles/IS...cessRules.html
>>>
>>> Microsoft Internet Security & Acceleration Server: Guidance
>>> http://www.microsoft.com/isaserver/t...dance/2004.asp
>>> http://www.microsoft.com/isaserver/t...dance/2000.asp
>>>
>>> Microsoft Internet Security & Acceleration Server: Partners
>>> http://www.microsoft.com/isaserver/partners/default.asp
>>>
>>> Deployment Guidelines for ISA Server 2004 Enterprise Edition
>>> http://www.microsoft.com/technet/pro...isaserver.mspx
>>> -----------------------------------------------------
>>>
>>>
>>> "MC" <(E-Mail Removed)> wrote in message
>>> news:%(E-Mail Removed)...
>>>> Is there any way to enable win2003 oder winxp to renew its IP config
>>>> automatically after changing the VLAN on the switch ?
>>>>
>>>> thanks
>>>> mc
>>>>
>>>>
>>>
>>>
>>
>>
>
>

"Herb Martin" <(E-Mail Removed)> wrote in message
news:Oa4$(E-Mail Removed)...
> I would also suggest just running "ipconfig /renew" rather
> than doing a reboot.

Yea, I usually try that first myself,...but I get one that "hangs" every
once in a while,...I'm not known for "patients" sometimes, so then I reboot
the thing :-)

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com