Configure interfaces
How to understand and configure interfaces in the basic system configuration scenario.
The types and quantities of interfaces that you will need to configure depend upon your physical device and the topology of your network. However, almost every topology requires that you configure at least one Ethernet interface.
Vyatta NOS automatically discovers all physical interfaces at start time and creates configuration nodes for them.
Recall that in our reference topology at Example topology for basic system configuration, the data plane interface named dp0p1p1
faces the Internet. This configuration allows the system to reach the DNS server and default gateway through a default route that we configure.
Vyatta NOS also creates a 'loopback' interface automatically, at start time. This is a software interface pre-configured to the IP address 127.0.0.1/8
. The loopback interface is always available, as long as the device is reachable.
This availability makes the loopback interface particularly useful to map to the system host name as a router ID in routing protocols like BGP and OSPF, or as a peer ID for internal BGP peers.
Configure an Internet-facing Ethernet interface
An example of how to configure an Internet-facing Ethernet interface for the basic configuration scenario.
Configure a default route
An example of how to configure a default route for the basic configuration scenario.