Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2201)

Appendix B: Glossary
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C B.11
EEE
The IEEE 802.3az Energy Efficient Ethernet (EEE) standard is a specification for lowering the
power consumption of Ethernet devices during periods of low link utilization. If no data is
being sent then the Ethernet device can enter a sleep state, called Low Power Idle (LPI), to
conserve the power consumed by the Ethernet device. See the
LPI glossary entry.
Etherchannel
See Dynamic channel group .
Ethernet Protection Switching Ring
See EPSR .
EPSR
EPSR (Ethernet Protection Switching Ring) operates on physical rings of switches (note,
not on meshed networks). When all nodes and links in the ring are up, EPSR prevents a
loop by blocking data transmission across one port. When a node or link fails, EPSR detects
the failure rapidly and responds by unblocking the blocked port so that data can flow
around the ring. The EPSR components are:
■ EPSR domain
■ Master node
■ Transit node
■ Ring port
■ Primary port
■ Secondary port
■ Control VLAN
■ Data VLAN
For more information and example configurations see Chapter 57, EPSR Introduction
and Configuration .
EPSR domain
A protection scheme for an Ethernet ring that consists of one or more data VLANs and a
control VLAN.
For more information see “Ring Components and Operation” on page 57.2 .
Egress
Outgoing packet process.
F
FDB
Forwarding Database.