Network Routing

Learn about backend and front end network interfaces, the subnets, routing issues, static route definition, and software defined networking.

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.

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