Network Basics

L4 and L7 Load Balancer in Bullet Points

OSI and TCP/IP model

Load balancing can be performed at various layers in the Open Systems Interconnection (OSI) Reference Model.

L4 Load Balancer -

• Operate at OSI Model Layer 4 (Transport Layer)
• Traffic forwarded on basis of source and destination IP addresses and ports [part of header data in a packet]