Contexts; Interface Contexts - Avaya G250 Reference

User Levels and Contexts

Contexts

The CLI is divided into various contexts from which sets of related commands can be entered.
Contexts are nested in a hierarchy, with each context accessible from another context, called
the parent context. The top level of the CLI tree is called the root context. Commands that can
be executed from any context in the system are listed as having the general context.

Interface contexts

Each interface has its own context in the CLI, which you use to manage the interface. The set of
commands related to an interface are only accessible from its interface context. For example, in
order to configure the Loopback interface, you must first enter the Loopback context. You enter
the Loopback context using the interface command with an interface identifier such as
interface loopback 1.
When an interface has only one sub-interface, the commands for the sub-interface are available
from the context of the parent interface. This is called unified configuration. When there are
multiple sub-interfaces, you must enter the context of a particular sub-interface in order to
configure the sub-interface.
For example, when you create a new VLAN interface 1, the sub-interface VLAN 1.0 is also
created. In this case, you can execute sub-interface context commands such as ip
admin-state from the parent context. If you add a second sub-interface VLAN 1.1, then you
can only execute sub-interface commands from the context of the sub-interface.
If you are in Supervisor or Privileged mode, you can enter any of the following interface
contexts:
Interface Console
Interface USB
Interface Dialer
Interface Fast Ethernet
Interface VLAN
Interface Serial
Interface Loopback
Interface Tunnel
30 Avaya G250 and Avaya G350 CLI Reference