TP-Link TL-SG3109 Term, Definition, limited geographical area, process, on their applications

Term	Definition
L2TP	Layer 2 Tunnel Protocol. Helps build virtual private networks in the dial access space, and
	provides Layer 2 Forwarding L2F) protocol and Point-to-Point Tunneling Protocol (PPTP).
LAG	Link Aggregated Group. Aggregates ports or VLANs into a single virtual port or VLAN.
LAN	Local Area Network. A network contained within a single room, building, campus or other
	limited geographical area.
	Data Link Layer or MAC Layer. Contains the physical address of a client or server station.
Layer 2	Layer 2 processing is faster than Layer 3 processing because there is less information to
	process.
	Network Layer. Contains the logical address and protocol type (IP, IPX, etc.). Layer
Layer 3	3 traffic can also be prioritized and forwarded based on packet information, such as
	the source and destination address. Layer 3 processing takes longer than Layer 2
	processing, as there is more information to process.
	Establishes connections and ensures that all data arrives at the correct destination.
Layer 4	Packets inspected at the Layer 4 level are analyzed and forwarding decisions are based
	on their applications.
LCP	Link Control Protocol. Manages authentication, compression, and encryption.
	Enables the even distribution of data and/or processing packets across available network
Load Balancing	resources. For example, load balancing may distribute the incoming packets evenly to all
	servers, or redirect the packets to the next available server.
M
MAC Address	Media Access Control Address. The MAC Address is a hardware specific address that
	identifies each network node.
	Characterizes a learning bridge, in which the packet’s source MAC address is recorded.
MAC Address Learning	Packets destined for that address are forwarded only to the bridge interface on which that
	address is located. Packets addressed to unknown addresses are forwarded to every
	bridge interface. MAC Address Learning minimizes traffic on the attached LANs.
MAC Layer	A sub-layer of the Data Link Control (DTL) layer.
MAN	Metropolitan Area Network. A communications network covering a metropolitan area or a
	suburb.
Mask	A filter that includes or excludes certain values, for example parts of an IP address.
	Message Digest 5. An algorithm that produces a 128-bit hash. MD5 is a variation of
MD5	MD4, and increases MD4 security. MD5 verifies the integrity of the communication and
	authenticates the origin of the communication.
MDI	Media Dependent Interface. A cable used for end stations.
MDIX	Media Dependent Interface with Crossover (MDIX). A cable used for hubs and switches.
MDU	Multiply-Divide Unit. A high-speed circuit that performs multiplication and division within
	the CPU.
MIB	Management Information Base. MIBs contain information describing specific aspects of
	network components.
MTU	Maximum Transfer Unit. Specifies the maximum frame size that can be transmitted over
	a network. Frames that exceed the MTU must be broken into smaller frames.
Multicast	Transmits copies of a single packet to multiple ports.
N
Network Processor	CPU chips that are optimized for networking and communications functions.

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