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imranaboo
Contributor
Contributor

NLB setting lost after upgrading hardware level from 4 to 7

We had an issue when upgrading our hardware level from version 4 to 7 when the vms were configured with MS windows load balancing (NLB), where all the network configuration was deleted and not restored.

We used the following method as a work around, it may help you but like everything make sure you test it in your development environment first.

Step

Action

Completed

Step 1:

Take a note of the IP, DNS and WINS entries for NLB NIC

Step 2:

Remove the server from the NLB cluster, first drain stop the server then remove host from the cluster

Step 3:

Upgrade tools and Hardware version using Update Manager as per instructions above

Step 4:

All NICS should be present as expected.  View the nics using the detailed view and record the device name for all connections

Step 5:

Add the host back to the NLB cluster in an inactive state using NLB manager.  

This process will rename the NLB nic to Local Area Connection #.

Configure the NLB IP address and subnet mask in NLB manager.  When prompted select the correct nic identified in step 4

Step 6:

Rename the nic to NLB configure the correct IP details recorded in step 1 including DNS, WINS and NetBIOS settings

Step 7:

Use NLB manager to configure the server as active in the cluster then reboot the server

Kind regard

Imran

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