Network Load Balancing by SushilSharma
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Transcript of Network Load Balancing by SushilSharma
Step By Step Configure Windows Network Load Balancing
Windows NLB Operation Mode
People always confused with the 3 operation mode in Windows Network Load Balancing and does not know which one they should use.
Reading TechNet explanation cause more confusion sometimes, so let’s make it simple and easy to understand
Unicast
Pros Best performance and save bandwidthCons
Need multi-NICs, Single NIC cannot access the individual node
Multicast
Pros Single NIC can access individual nodeCons May not compatible router and switch
IGMP Multicast
Pros Better than multicastCons
Need hardware support by router and switch
So in the virtualization world now, the best practice is to use unicast with multi-NICs (one NIC dedicate for NLB communication)
You can always read more from Microsoft TechNet here
Last time I talked about Windows NLB Operation Mode, so this time let’s configure a Windows NLB step by step
1. Install the Windows NLB feature on all of the node need to be added into the NLB
2. Configure the NLB in “Network Load Balancing Manager”
Select the NIC you want to use for NLB
Add a new Cluster IP Address: This is the IP Address use for connect to the NLB cluster
Select the NLB Operation Mode, in my case, I have two NIC, so I select Unicast
Configure the port rule
Configure the “Filtering Mode” and the Affinity, in my case, I’d like to random the session load balacing
None: Random load balancing for every single session
Single: Same session will keep connect to the same node until reach the timeout time
Network: Same session will keep connect to the same network range until reach the timeout time
Wait until the status change to Converged
Add the secondary node
Configure the Node Load
3. Add a A record in DNS
Now the NLB is working with my IP address 192.168.168.101, we need to create a new DNS name for it
Enjoying
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