Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2206)

Appendix B: Glossary
Software Reference for x310 Series Switches
B.16 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
Local RADIUS server
The local RADIUS Server enables you to create a RADIUS server on the switch.
For more information and configuration examples see Chapter 50, Local RADIUS Server
Introduction and Configuration .
LPI
Low Power Idle (LPI). LPI is a feature of the IEEE 802.3az Energy Efficient Ethernet (EEE)
standard. LPI lowers power consumption of switch ports during periods of low link
utilization when connected to IEEE 802.3az compliant host devices. If no data is sent then
the switch port can enter a sleep state, called Low Power Idle (LPI), to conserve power used
by the switch.
For more information and configuration examples see the section Save Power With the
Eco-Friendly Feature command on page 1.32 . For command information and examples
see the ecofriendly lpi command on page 8.14 . See also the LED glossary entry.
LSA
Link State Advertisement. OSPF sends link-state advertisements (LSAs) to all other routers
within the same hierarchical area. Data on attached interfaces, metrics used, and other
variables, are included in OSPF LSAs. As OSPF routers accumulate link-state data, they use
the Shortest Path First (SPF) algorithm to calculate the shortest path to each node.
M
MAC address learning
A key optimization in Ethernet switching is that the flooding of unicast traffic is minimized.
This is based on switches knowing which port to forward traffic to for given destination
MAC addresses. Switches achieve this by the simple process of noting on which ports
packets arrive from given MAC addresses, as those will be the ports to which return
packets to those MAC addresses will need to be forwarded. This process is referred to as
MAC address learning.
MAC authentication
The way that MAC-based authentication works is that when the supplicant device starts
sending packets, the authenticating switch will extract the source MAC address from the
packets, and send a RADIUS request that uses this MAC address as the username and
password in the request. See
AAA and Tri-authentication .
For a sample configuration script see “Sample MAC Authentication Configuration” on
page 44.8 .