Hi, I've configured two Exchange2003 Front-End-servers using Windows NLB. Can 
I add a second shared IP-address (in addition to the primary) for the same 
NLB-cluster. In the "Cluster properties" there is "Additional cluster 
IP-address "-option. For what purpose this option can be used ?

Best Regards, Djaw

On Wed, 24 Oct 2007 23:05:01 -0700, Djaw.
 wrote:

>Hi, I've configured two Exchange2003 Front-End-servers using Windows NLB. Can 
>I add a second shared IP-address (in addition to the primary) for the same 
>NLB-cluster. In the "Cluster properties" there is "Additional cluster 
>IP-address "-option. For what purpose this option can be used ?
>
>Best Regards, Djaw
>
You NLB the box. You can have many IP addresses as you want serving as
many services as you want. You can NLB HTTP on one address and HTTPS
on another. The world is your garlic-bread.

> The world is your garlic-bread.

With cheese?

Thanks. Do you mean  that it's possible to NLB smtp-port on the primary 
shared IP-address  and add another cluster IP address, using "Additional 
cluster IP-address",  to NLB smtp-port. I will then have servers sending 
email using the Primary shared IP address and other servers will send email 
using the additional shared IP-address ?

With Regards, Djaw.  

"Mark Arnold [MVP]" wrote:

> On Wed, 24 Oct 2007 23:05:01 -0700, Djaw.
>  wrote:
> 
> >Hi, I've configured two Exchange2003 Front-End-servers using Windows NLB. Can 
> >I add a second shared IP-address (in addition to the primary) for the same 
> >NLB-cluster. In the "Cluster properties" there is "Additional cluster 
> >IP-address "-option. For what purpose this option can be used ?
> >
> >Best Regards, Djaw
> >
> You NLB the box. You can have many IP addresses as you want serving as
> many services as you want. You can NLB HTTP on one address and HTTPS
> on another. The world is your garlic-bread.
>

On Thu, 25 Oct 2007 11:27:23 -0700, Djaw.
 wrote:

>Thanks. Do you mean  that it's possible to NLB smtp-port on the primary 
>shared IP-address  and add another cluster IP address, using "Additional 
>cluster IP-address",  to NLB smtp-port. I will then have servers sending 
>email using the Primary shared IP address and other servers will send email 
>using the additional shared IP-address ?
>
>With Regards, Djaw.  
>
Huh?
NLB has got nothing to do with users sending email. I think you might
have asked a question you didn't want an answer to.
What are you actually trying to do?

Hi Mark,

As I mentioned in the first message, I've configured two Ex2003 FE-servers 
using Windows NLB.  I load balanced smtp as well as http and https. 

This NLB-cluster is used for OWA. External smtp-gw are configured to send 
Inbound email to the NLB's shared IP-address and Inbound email is then 
forwarded to BE-servers. Everything is working fine. 

Can I NLB smtp using an additional shared IP-address  ?
In the "Cluster properties" there is "Additional cluster 
IP-address "-option. For what purpose this option can be used ?

With Regards, Dj.

"Mark Arnold [MVP]" wrote:

> On Thu, 25 Oct 2007 11:27:23 -0700, Djaw.
>  wrote:
> 
> >Thanks. Do you mean  that it's possible to NLB smtp-port on the primary 
> >shared IP-address  and add another cluster IP address, using "Additional 
> >cluster IP-address",  to NLB smtp-port. I will then have servers sending 
> >email using the Primary shared IP address and other servers will send email 
> >using the additional shared IP-address ?
> >
> >With Regards, Djaw.  
> >
> Huh?
> NLB has got nothing to do with users sending email. I think you might
> have asked a question you didn't want an answer to.
> What are you actually trying to do?
>

On Thu, 25 Oct 2007 12:09:02 -0700, Djaw.
 wrote:

>Hi Mark,
>
>As I mentioned in the first message, I've configured two Ex2003 FE-servers 
>using Windows NLB.  I load balanced smtp as well as http and https. 
>
>This NLB-cluster is used for OWA. External smtp-gw are configured to send 
>Inbound email to the NLB's shared IP-address and Inbound email is then 
>forwarded to BE-servers. Everything is working fine. 
>
>Can I NLB smtp using an additional shared IP-address  ?
>In the "Cluster properties" there is "Additional cluster 
>IP-address "-option. For what purpose this option can be used ?
>
>With Regards, Dj.
>
Good. So this has nothing to do with the users.
Yes. You can NLB something else - smtp if you want to - on another IP
address. I can't asnwer the question as to what purpose you want to
use it because that's your decision based on some business
requirement. You have absolutley no need to use it so I don't actually
see why you're focusing on smtp.

Hi Mark,

Thanks again for your answers. I am focusing on smtp because, I've more than 
fifty servers, running IIS smtp-service, which are configured to send emails 
(notifications, virus-alerts, etc..) via an old Ex2K3 bridgehead server. This 
bridgehead Ex2K3 server belongs to the same Exchange organization as the NLB. 

I want to decommission this bridgehead server and add it's IP-address to the 
NLB. As a result, these fifty servers will still sent email using the same IP 
but now via the NLB.

Can I achieve this goal by adding additional shared IP-address to nlb smtp 
(In the "Cluster properties" there is "Additional cluster) ?

With Regards, Djaw.


"Mark Arnold [MVP]" wrote:

> On Thu, 25 Oct 2007 12:09:02 -0700, Djaw.
>  wrote:
> 
> >Hi Mark,
> >
> >As I mentioned in the first message, I've configured two Ex2003 FE-servers 
> >using Windows NLB.  I load balanced smtp as well as http and https. 
> >
> >This NLB-cluster is used for OWA. External smtp-gw are configured to send 
> >Inbound email to the NLB's shared IP-address and Inbound email is then 
> >forwarded to BE-servers. Everything is working fine. 
> >
> >Can I NLB smtp using an additional shared IP-address  ?
> >In the "Cluster properties" there is "Additional cluster 
> >IP-address "-option. For what purpose this option can be used ?
> >
> >With Regards, Dj.
> >
> Good. So this has nothing to do with the users.
> Yes. You can NLB something else - smtp if you want to - on another IP
> address. I can't asnwer the question as to what purpose you want to
> use it because that's your decision based on some business
> requirement. You have absolutley no need to use it so I don't actually
> see why you're focusing on smtp.
> 
>

"Djaw."  wrote in message 
news:44C349B2-1C46-47A5-8865-14808151A0ED@microsoft.com...
> Hi Mark,
>
> Thanks again for your answers. I am focusing on smtp because, I've more 
> than
> fifty servers, running IIS smtp-service, which are configured to send 
> emails
> (notifications, virus-alerts, etc..) via an old Ex2K3 bridgehead server. 
> This
> bridgehead Ex2K3 server belongs to the same Exchange organization as the 
> NLB.
>
> I want to decommission this bridgehead server and add it's IP-address to 
> the
> NLB. As a result, these fifty servers will still sent email using the same 
> IP
> but now via the NLB.
>
> Can I achieve this goal by adding additional shared IP-address to nlb smtp
> (In the "Cluster properties" there is "Additional cluster) ?

You should read Rod's blog on the topic at: 
http://msmvps.com/blogs/clustering/archive/2005/08/11/62372.aspx

They key is that a Virtual IP is not a real IP. :)

-- 
Russ Kaufmann
MVP - Windows Server - Clustering
ClusterHelp.com, a Microsoft Certified Gold Partner
Web http://www.clusterhelp.com
Blog http://msmvps.com/clusterhelp

The next ClusterHelp classes are:
Dec 10 - 13 in Denver
Jan 21 - 24 in New York

Hi Russ,
Thank you for tackling this NLB issue. Definitely, the NLB-cluster shared 
VirtualIP is used for Inbound traffic only. Can I add another shared 
virtualIP for the NLB-cluster using NBL manager (Cluster properties  \ 
Cluster IP Addresses-tab --> Additional cluster IP addresses) for inbound 
traffic ?

Best regards, Djaw.
  
"Russ Kaufmann [MVP]" wrote:

> "Djaw."  wrote in message 
> news:44C349B2-1C46-47A5-8865-14808151A0ED@microsoft.com...
> > Hi Mark,
> >
> > Thanks again for your answers. I am focusing on smtp because, I've more 
> > than fifty servers, running IIS smtp-service, which are configured to send 
> > emails (notifications, virus-alerts, etc..) via an old Ex2K3 bridgehead server. 
> > This bridgehead Ex2K3 server belongs to the same Exchange organization as the NLB.
> > I want to decommission this bridgehead server and add it's IP-address to 
> > the NLB. As a result, these fifty servers will still sent email using the same 
> > IP but now via the NLB.
> >
> > Can I achieve this goal by adding additional shared IP-address to nlb smtp
> > (In the "Cluster properties" there is "Additional cluster) ?
> 
> You should read Rod's blog on the topic at: 
> http://msmvps.com/blogs/clustering/archive/2005/08/11/62372.aspx
> 
> They key is that a Virtual IP is not a real IP. :)
> 
> -- 
> Russ Kaufmann
> MVP - Windows Server - Clustering
> ClusterHelp.com, a Microsoft Certified Gold Partner
> Web http://www.clusterhelp.com
> Blog http://msmvps.com/clusterhelp
> 
> The next ClusterHelp classes are:
> Dec 10 - 13 in Denver
> Jan 21 - 24 in New York 
>