Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 323)

Interface Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 12.3
interface (to configure)
Use this command to select one or more interfaces to configure.
Syntax interface <interface-list>
interface lo
Usage A local loopback interface is one that is always available for higher layer protocols to use
and advertise to the network. Although a local loopback interface is assigned an IP
address, it does not have the usual requirement of connecting to a lower layer physical
entity. This lack of physical attachment creates the perception of a local loopback interface
always being accessible via the network.
Local loopback interfaces can be utilized by a number of protocols for various purposes.
They can be used to improve access to the switch and also increase its reliability, security,
scalability and protection. In addition, local loopback interfaces can add flexibility and
simplify management, information gathering and filtering.
One example of this increased reliability is for OSPF to advertise a local loopback interface
as an interface-route into the network irrespective of the physical links that may be “up” or
“down” at the time. This provides a higher probability that the routing traffic will be
received and subsequently forwarded.
Mode Global Configuration
Example The following example shows how to enter Interface mode to configure vlan1. Note how
the prompt changes.
Parameter Description
<interface-list> The interfaces or ports to configure. An interface-list can be:
■
an interface (e.g. vlan2), a switch port (e.g. port1.0.6),
a static channel group (e.g. sa2) or a dynamic (LACP)
channel group (e.g. po2)
■ a continuous range of interfaces, ports, static channel
groups or dynamic (LACP) channel groups separated by a
hyphen;
e.g. vlan2-8, or port1.0.1-1.0.6, or sa1-2, or
po1-2
■
a comma-separated list of the above;
e.g. port1.0.1,port1.0.4-1.0.6. Do not mix
interface types in a list
The specified interfaces must exist.
lo The local loopback interface.
awplus# configure terminal
awplus(config)# interface vlan1
awplus(config-if)#