The examples in this chapter have some elements in common:
- Any Ethernet interface to be used must already be configured. The examples do not show Ethernet interface configurations.
- Loopback or Ethernet interfaces are typically configured as tunnel endpoints. Configuring a loopback interface as the tunnel endpoint is advantageous in systems in which there are multiple paths between tunnel endpoints. If the endpoint is the loopback interface, the tunnel does not fail if an Ethernet interface fails.
See Ciena Vyatta Network OS LAN Interfaces Configuration Guide for information about configuring Ethernet and loopback interfaces.