Network Routing
Explore how network routing functions within distributed systems, focusing on how machines choose interfaces to send traffic, manage routes, and handle challenges like multiple plausible paths and sensitive data transmission. Understand key concepts such as static routes, software-defined networking, and the importance of accurate route management to maintain security and availability in production environments.
Network interfaces
Because machines in a data center usually have multiple network interfaces, questions will sometimes arise about which interfaces particular kinds of traffic should traverse. For example, it’s relatively common to see a machine with a front-end network interface connected to one VLAN for communication to the web servers and a back-end network interface connected to a different VLAN for communication to the database servers. In this case, the server must be told which interface to use in order to reach a particular destination IP address.
The different subnets
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