Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

How unnumbered interfaces work

Basic IP unnumbered interface configuration illustrates how unnumbered interfaces work. A router called VR1 contains an interface named A that faces an interfaced named B on a router called VR2. A VLAN subinterface of A connects to a VLAN subinterface of B.The VLAN subinterface of A is configured as unnumbered.

On VR1, the administrator configures a static route through A toward the subnet in B. The static route makes the router take the manually configured unnumbered interface as the entry for routing, thereby, bypassing the need for a dynamic protocol to route traffic.