The page provides you detailed information on how to configure NLB on windows server 2012 with high availability; this training is also helpful for IT admin interviews and to pass IT certifications.
Network Load Balancing Server 2012:
NLB: network load balancing, where multiple servers handle client requests, but it’s going to give us much broader range of application support.
What is Network Load Balancing?
- Distributes network load balancing across multiple servers to provide reliability and performance.
- Method for providing LBFO for IP stateless applications: HTTP, FTP, PROXY, DIRECT ACCESS OR VPN
- Each host or node runs a separate copy of the server application.
- Can configure load on each host handles
- Ability to add or remove host dynamically
- NLB hosts communicate with each other using a “heart beat” every second.
- Can detect a server failure, but not an application failure
- When server is back on line, will transparently rejoin cluster
- Minimum of 2 nodes
- Maximum of 32 nodes
- Clients access the cluster using a single logical name and virtual IP address.
- All hosts must reside on the same subnet
- Must enable MAC address spoofing if nodes reside in hyper – V
Enabling and Configuring NLB:
- Open up server manager — manage — add roles and features — role based installation — select the server — skip the roles — remote server and administration tool — feature administration tool — network and load balancing tools
- Now under tools you will notice network load balancing manager, once you have installed NLB manager console, now you have install NLB service on 2 nodes. If you are doing this on domain controller add 2 nodes and install NLB service on each node.
- After adding the NLB service on 2 nodes we need open the network load balancing manager, here we have to add 2 nodes to create a cluster. Right click on network load balancing clusters and create new host, add 1 server and then server 2.