In a clustered architecture where there are multiple app server(nodes), load balancing takes place at web-server level or somewhere else.
Is it possible that we can have load balancing among two web-servers?
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1Yes. Not sure why you would think that you could not. – Elliott Frisch Jun 29 '17 at 03:50
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if a request comes to web-server and then load balancing takes place. Then in case we have two web-servers, who will take care of delegating request to web-server1/web-server2? Because load balancing takes place after request is received by web-server. – Gaurava Agarwal Jun 29 '17 at 03:52
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1It appears that you are assuming that websphere must be the front-end (there are reverse proxies which can take that role, it is also possible to install other webservers and use websphere as a loadbalanced backend). – Elliott Frisch Jun 29 '17 at 04:07
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Short answer is yes you can have multiple web-servers. It depends on the level of fail-over you want to support, but a pretty standard topology is using a load balancer (like F5) which then routes to a web server (IHS+WebSphere Plugin) which handles routing to back-end AppServer and ensures HTTP session affinity.
A lengthy, but detailed read, on how you might choose the right approach: https://www.ibm.com/developerworks/websphere/techjournal/1010_pape/1010_pape.html
Michael Thompson
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There is a similar thread from several years ago on developerworks-- WebSphere > Forum: WebSphere Application Server > Topic: Load Balancing Requests from WAS to Web servers :
Betsy Riggins
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