downloading them to your computer. If you wish to remove your messages from the server, you must
use your mail client to generate local folders, copy messages to your local hard drive, and then delete
and expunge the messages from the server.
IP MultiCast
IPMC supports IPv4 and IPv6 multicasting. IPMCv4 denotes multicast for IPv4. IPMCv6 denotes
multicast for IPv6.
IPTV
Internal Protocol Television uses a digital signal sent via broadband through a switched telephone or
cable system. An accompanying set top box (that sits on top of the TV) decodes the video and converts
it to standard television signals.
IVL
In Independent VLAN Learning, every VLAN uses its own logical source address table, as opposed to
, where two or more VLANs share the same part of the MAC address table.
LACP
Link Aggregation Control Protocol is part of the IEEE 802.3ad and automatically configures multiple
aggregated links between switches.
LAG
A Link Aggregation Group is the logical high-bandwidth link that results from grouping multiple
network links in link aggregation (or load sharing). You can configure static LAGs or dynamic LAGs
(using the
LACP (Link Aggregation Control Protocol)
LLC
The IEEE 802.2 Logical Link Control protocol provides a link mechanism for upper layer protocols. It is
the upper sub-layer of the Data Link Layer and provides multiplexing mechanisms that make it possible
for several network protocols (IP, IPX) to coexist within a multipoint network. The LLC header consists of
a 1 byte Destination Service Access Point (DSAP), 1 byte Source Service Access Point (SSAP), and a 1 or
2 byte Control field, followed by LLC information.
LLDP
Link Layer Discovery Protocol conforms to IEEE 802.1ab and is a neighbor discovery protocol. Each
LLDP-enabled device transmits information to its neighbors, including chassis and port identification,
system name and description,
names, and other selected networking information.
The protocol also specifies timing intervals in order to ensure current information is being transmitted
and received.
load sharing
Load sharing, also known as trunking or link aggregation, conforms to IEEE 802.3ad. This feature is the
grouping of multiple network links into one logical high-bandwidth link. For example, by grouping four
100 Mbps of full-duplex bandwidth into one logical link, you can create up to 800 Mbps of bandwidth.
Thus, you increase bandwidth and availability by using a group of ports to carry traffic in parallel
between switches.
LSA
Glossary
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