Re: NLB with 2 NICs question

With NLB there is no such thing as heartbeat over a private network and
certainly not with a crossover cable.

http://support.microsoft.com/default.aspx?scid=kb;[LN];242248


--
Chuck Timon, Jr.
Microsoft Corporation
Beta Engineer
This posting is provided "AS IS" with no
warranties, and confers no rights.

"Jay-nospam" <jaynospam@xxxxxxxxxxxxxx> wrote in message
news:T_2dnTMOyZr7TCPenZ2dnUVZ_sydnZ2d@xxxxxxxxxxx
>I should have said that the NLB Cluster is configured for Unicast Mode. I
>also have the Affinity set to None.
>
> Thanks,
>
> Jennifer
>
> "Russ Kaufmann [MVP]" <russ@xxxxxxxxxxxxxxx> wrote in message
> news:OzdP8yvEGHA.648@xxxxxxxxxxxxxxxxxxxxxxx
>> "Jay-nospam" <jaynospam@xxxxxxxxxxxxxx> wrote in message
>> news:YpWdnb1Xj-NHJCPeRVn-tQ@xxxxxxxxxxx
>>> Hi,
>>>
>>> I have 2 Servers set up with NLB with 2 NIC on each server. On each
>>> server one NIC is connected to the LAN and uses one subnet,
>>> 255.255.255.128. It is called my Public Connection. The other NIC is
>>> connected to the other server in the cluster via a crossover cable and
>>> uses another subnet, 255.0.0.0. It is called my Private Connection.
>>>
>>> My Public NIC is 200.200.200.153/5 and my Private NIC is 10.0.0.1/3
>>>
>>> I am using Load Balancing to set up a Web Farm for a Web application so
>>> that I can increase the maximum number of users that the Web application
>>> can handle.
>>>
>>> When I run a stress test using the Virtual IP, the requests seem to be
>>> split almost evenly between my 2 servers.
>>>
>>> When I stop one server (using the Network Load Balancing Manager), all
>>> the requests seem to go to the other server and vice versa which is what
>>> I would expect.
>>>
>>> My question is, I see that all the network traffic is only on my Public
>>> NIC and nothing seems to happen on my Private NIC.
>>>
>>> I expected to see some heartbeat traffic on the Private NIC but when I
>>> look at the Status, no packets are being sent or received by this NIC.
>>>
>>> I have also made sure that my Private NIC is listed first in the order
>>> of connections in the Advanced Settings for Network Connections.
>>>
>>> Is there something else I should be doing so that the Private NIC is
>>> used?
>>
>> Configure with Unicast instead of Multicast.
>>
>>
>> --
>> Russ Kaufmann
>>
>> MVP - Windows Server - Clustering
>> http://www.clusterhelp.com - Cluster Website
>> http://msmvps.com/clusterhelp - Blog
>>
>>
>
>


.

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