I am creating a 2-node NLB cluster on Windows Server 2008 R2 (inside Hyper-V) that will be used for a SharePoint web application in IIS. Here is my desired configuration:
Server A
Host NIC. IP is 10.0.0.20
Cluster NIC. IP is 192.168.1.50
Server B
Host NIC. IP is 10.0.0.21
Cluster NIC. IP is 192.168.1.50
When creating the cluster or adding a node, you get the question on the priority and the option to add additional dedicated ip addresses. I know this is required with multicast when using a single NIC. But with two NICS, I didn't think this was necessary.
The problem is if I don't add this additional dedicated IP address, I am unable to ping the cluster IP address from one of the NLB hosts. I get a general failure. For example, when logged on to Server A, I ping 192.168.1.50. Same issue whether I use unicast
or multicast. The route table on either server is shown to route packets on the 192.168.1.0/24 network to the 192.168.1.50 interface which seems wrong. If I add a dedicated ip address to each host (for example, Server A is 192.168.1.10, Server B is 192.168.1.11)
using NLB manager, all is fine.
Is it required to add dedicated IP address in this scenario?
It sounds like you should use a dedicated IP address on each NLB server. Also, Unicast or Multicast would depend on your network configuration. Many routers do not support multicast mode.
hawaiianmeta...
1 Post
Configure NLB with 2 NICs
Jan 24, 2011 07:50 PM|LINK
I am creating a 2-node NLB cluster on Windows Server 2008 R2 (inside Hyper-V) that will be used for a SharePoint web application in IIS. Here is my desired configuration:
Server A
Host NIC. IP is 10.0.0.20
Cluster NIC. IP is 192.168.1.50
Server B
Host NIC. IP is 10.0.0.21
Cluster NIC. IP is 192.168.1.50
When creating the cluster or adding a node, you get the question on the priority and the option to add additional dedicated ip addresses. I know this is required with multicast when using a single NIC. But with two NICS, I didn't think this was necessary.
The problem is if I don't add this additional dedicated IP address, I am unable to ping the cluster IP address from one of the NLB hosts. I get a general failure. For example, when logged on to Server A, I ping 192.168.1.50. Same issue whether I use unicast or multicast. The route table on either server is shown to route packets on the 192.168.1.0/24 network to the 192.168.1.50 interface which seems wrong. If I add a dedicated ip address to each host (for example, Server A is 192.168.1.10, Server B is 192.168.1.11) using NLB manager, all is fine.
Is it required to add dedicated IP address in this scenario?
Randy
NLB
ServerIntell...
58 Posts
Re: Configure NLB with 2 NICs
Apr 05, 2012 07:38 PM|LINK