--> BIG IP LTM is default deny device.
--> By default BIG IP LTM device does not process any traffic unless you configure the Listener.
--> We need to configure Virtual Server in F5 LTM in order to process the traffic or load balance the traffic.
--> Virtual Server is one type of Listener in F5 LTM.
--> Virtual Server can be configured in two methods:
1) Host Virtual Server: A virtual server configured with Single IP address.
2) Network Virtual Server: A Virtual Server Configured with Network Address.
Note: Selection of the Virtual Server depends upon the application requirements in the network.
Working of Virtual Server:
1) Application FQDN is configured with the IP address of the Virtual Server.
2) Any client who tries to access the application URL will form a connection with Virtual Server IP address.
3) Now, F5 BIG IP system establishes a three-way handshake with the Client and forms TCP Connection.
4) Once the TCP Connection is established with the client then the F5 BIG IP LTM chooses the pool member to establish the TCP three-way handshake with the Pool member based upon the load balancing algorithm and health monitor.
5) After Establishing the TCP Connection with the Pool member then the F5 LTM will create an application request which is received from the client and send it to the pool member.
--> By default BIG IP LTM device does not process any traffic unless you configure the Listener.
--> We need to configure Virtual Server in F5 LTM in order to process the traffic or load balance the traffic.
--> Virtual Server is one type of Listener in F5 LTM.
--> Virtual Server can be configured in two methods:
1) Host Virtual Server: A virtual server configured with Single IP address.
2) Network Virtual Server: A Virtual Server Configured with Network Address.
Note: Selection of the Virtual Server depends upon the application requirements in the network.
Working of Virtual Server:
1) Application FQDN is configured with the IP address of the Virtual Server.
2) Any client who tries to access the application URL will form a connection with Virtual Server IP address.
3) Now, F5 BIG IP system establishes a three-way handshake with the Client and forms TCP Connection.
4) Once the TCP Connection is established with the client then the F5 BIG IP LTM chooses the pool member to establish the TCP three-way handshake with the Pool member based upon the load balancing algorithm and health monitor.
5) After Establishing the TCP Connection with the Pool member then the F5 LTM will create an application request which is received from the client and send it to the pool member.
great blog
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