Comments on: Default Gateways and Multihomed Edge Boxes

By: ISA Default Gateways & Creating Static Routes « Slvrfxms's Blog

ISA Default Gateways & Creating Static Routes « Slvrfxms's Blog — Thu, 01 Apr 2010 12:37:08 +0000

[...] could not contact our issuing CA for a client certificate, I came across a great blog entry ( http://www.shudnow.net/2009/02/01/default-gateways-and-multihomed-boxes/ ) explaining the need for static routes on multi-homed servers. In the case of ISA, we have two [...]

By: Bamboo Partner Blogs

Bamboo Partner Blogs — Fri, 24 Apr 2009 11:24:59 +0000

Multihomed IIS Servers…

I was setting up a staging server this week to demo some our projects and products to clients, and ran…

By: Elan Shudnow

Elan Shudnow — Tue, 10 Mar 2009 04:04:00 +0000

Good to know. Thanks for following up Kamil.

By: Kamil

Kamil — Mon, 09 Mar 2009 13:51:06 +0000

Hi Elan,

I have found the reason of my problem. You need to enable weak host model on Windows 2008 to make Edge working fine:

http://technet.microsoft.com/en-us/magazine/2007.09.cableguy.aspx

By: Elan Shudnow

Elan Shudnow — Fri, 27 Feb 2009 13:10:47 +0000

Yep, I have done this with OCS R2 Edge as well on Server 2008. Not sure what may be causing it. I have seen a forum thread where people configuring NLB on Server 2008 required gateways on both NICs for things to work properly but didn’t have to on Server 2003. I wonder if there’s some sort of connection there where if something is a specific way on Server 2008 then it will work fine where if something is another way it won’t work fine. Not sure, I’d have to have that issue myself to troubleshoot and see what’s going on.

By: Kamil

Kamil — Fri, 27 Feb 2009 08:45:06 +0000

Hi Elan,

I have Edge R2 version setup on Windows 2008 with four NIC’s – three public IP’s, one internal.

When i setup only one gateway on access edge NIC, add routes to internal networks through Internal NIC, traffic from/to Access edge and from/to Internal NIC works fine, but web conferencing Edge and A/V Edge does not work at all. Live Meeting does not start externally, I must have default gateways setup on all Public NIC’s to start Live Meeting externally. Have you checked your setup on Windows 2008 ?

By: Mike Crowley

Mike Crowley — Tue, 03 Feb 2009 19:00:41 +0000

Again, thanks for your time and discussion here. I’ll post back if I learn anything else!

By: Elan Shudnow

Elan Shudnow — Tue, 03 Feb 2009 05:03:20 +0000

You probably already know what I’m about to say, but figured I’d say it anyways. It’s in regards to your Cluster not detecting what site it’s in. One thing to keep in consideration is that even though with Server 2008 you can have 4 subnets, both the subnets that the CMS will use (your corporate subnets for the CMS) must be part of the same Site (Stretched AD Site).

So if you have 10.10.10.2/24 for your Node1 in Datacenter A and 10.10.20.2/24 for your Node2 in Datacenter B, the 10.10.10.x and 10.10.20.x subnet have to be a part of the same AD Site. For your private NICs, they don’t have to really be a part of the same AD Site but will obviously have to route to each other.

By: Elan Shudnow

Elan Shudnow — Tue, 03 Feb 2009 03:16:31 +0000

No, I’m not with PSS and don’t work for Microsoft. Sorry. And ya, I do agree an article on Multi-Subnet Clusters would be a good article.

By: Mike Crowley

Mike Crowley — Mon, 02 Feb 2009 18:39:31 +0000

Thanks for your response.
You work with PSS, right? Perhaps you could take a look at SRX090114600383. I just glanced at your SCC link, and what its lacking is Server 2008′s ability to use routable public and private networks. So in a 2 node cluster, you could have 4 subnets. I could really use a good example of a properly configured SCC multi-subnet cluster (routes and addresses used on each interface)