Case Study: Load Balancing in a Multihoming Environment

This case study examines the process of balancing traffic in a multihoming environment. A standard enterprise DMZ network is presented, with a focus on the Internet connectivity aspects and defining traffic flow policies. The security aspects of deploying Internet connectivity are outside the scope of this discussion.

Scenario Overview

The enterprise is currently single-homed, with no redundancy. The enterprise does not have its own ASN and uses a single static default route pointing toward the upstream ISP.