Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2205)

Appendix B: Glossary
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C B.15
Link aggregation group
A Link Aggregation Group is a collection of bundled switch ports for an aggregated link.
Link aggregation is the bonding together of two or more data channels into a single
channel that appears as single logical link of higher bandwidth increasing link
performance and reliability.
For an more information see “Link Aggregation Control Protocol (LACP)” on page 20.3 .
For a configuration example see “Configuring an LACP Channel Group” on page 20.5
Link-local addresses
A link-local address is an IP (Internet Protocol) address that is only used for
communications in the local network, or for a point-to-point connection. Routing does
not forward packets with link-local addresses. IPv6 requires a link-local address is assigned
to each interface, which has the IPv6 protocol enabled, and when addresses are assigned
to interfaces for routing IPv6 packets.
Note that link-local addresses are retained in the system until they are negated by using
the no variant of the command that established them. See the
ipv6 enable command for
more information.
Also note that the link-local address is retained in the system if the global address is
removed using another command, which was not used to establish the link-local address.
For example, if a link local address is established with the
ipv6 enable command then it
will not be removed using a no ipv6 address command.
LLDP
Link Layer Discovery Protocol. LLDP is a Layer 2 protocol that enables Ethernet network
devices, such as switches and routers, to transmit and/or receive device-related
information to or from directly connected devices on the network, and to store such
information learned about other devices. LLDP is a link level (“one hop”) protocol; LLDP
information can only be sent to and received from devices that are directly connected to
each other, or connected via a hub or repeater. Advertised information is not forwarded
on to other devices on the network.
For more information see Chapter 70, LLDP, LLDP-MED and Voice VLAN Introduction
and Configuration .
For configuration examples see “Configuring LLDP” on page 70.11 .
LLDPDU
LLDP Data Unit. See LLDP advertisements .
LLDP advertisements
LLDP transmits advertisements as packets called LLDP Data Units (LLDPDUs). An LLDPDU
consists of a set of Type-Length-Value elements (
TLV ), each of which contains a particular
type of information about the device or port transmitting it.
LLDP-MED
Link Layer Discovery Protocol Media Endpoint Discovery. LLDP-MED is an enhancement to
IEEE's 802.1AB LLDP, adding media and IP telephony-specific messages that can be
exchanged between the network and endpoint devices.
For more information see “LLDP-MED” on page 70.3 , “LLDP-MED: Location
Identification TLV” on page 70.7 and “LLDP-MED Operation” on page 70.9 . For the
procedure to configure LLDP-MED see “Configure LLDP-MED” on page 70.14 .