Glossary M, N, O
MAN Metropolitan Area Network - Describes a network spanning a geographical area greater than a LAN (local area network) but less than a WAN (wide area network) e.g. the span of a city or a large campus.
Managed Switch These types of switches contain one or more methods to modify the operation of the switch by users such as a GUI or web-based management systems.
MDI Medium Dependent Interface see Auto-MDIX
MDIX Medium Dependent Interface Crossover see Auto-MDIX
Media Converter - A networking device that allows the connection of fibre optic cable systems to copper cabling installations or other dissimilar media types.
MHz MegaHertz - Denotes a transmission rate of one million cycles per second.
Micron See µ
Mini-Zip Refers to a duplex cable that has been manufactured with two simplex cables with a sheath measuring 1.8mm in diameter each. This is opposed to a Standard Zip cable whereby the diameter is 2.8mm for each simplex cable.
Mil Tac A type of fibre optic cable that is suitable for Military Tactical applications and other environments where deployment and retrieval for reuse is required.
MissingLink - A feature of some Allied Telesis Media Converters which allows accurate reporting to network management systems as well as allowing devices with redundant link capabilities to be inter-connected with these Media Converters, as a failure in one fibre link will be signalled to the network switch allowing the second link to be activated.
MLD Snooping Multicast Listener Discovery Snooping - A protocol of IPv6, similar to IGMP Snooping which reduces the amount of multicast traffic on a network by sending streams only to interested recipients not all recipients. This results in a more efficient use of bandwidth.
MMF - See Multi Mode Fibre
Mode Conditioning Patch Cord/Cable Used with a 1000Base-LX transceiver to extend the range of Gigabit over OM1 (62.5/125 cable) from 250m to 550m. For 10GbE applications, using a 10GBaseLRM transceiver you can achieve distances up to 220m with OM1 and OM2 cable.
MPO Multi-Fibre Push On Connector. A 12 or 24 fibre connector.
MTP©MPO Multi-Fibre Termination Push On Connector. A high performance MPO connector manufactured by US Conec. These can contain either 12 or 24 fibres in a compact connector providing savings in rack space.
Multi Mode Fibre Or MM fibre is a type of fibre used for networking over small distances with a data range of between 10 Mbit/s up to 10 Gbit/s up to 600m.
NEBS Network Equipment Building Systems - A series of safety and conformance standards applied to telecommunications equipment in the USA. A feature of some Allied Telesis© products.
NIC Network Interface Card - Also known as a Network or LAN adapter is a piece of computer hardware that allows a computer to connect to a network.
Nm Nanometre - A unit of length denoting one billionth of a metre.
OSPF Open Shortest Path First - A routing protocol that allows routers to negotiate fast convergence of paths through a network. It allows load balancing across links, path configuration across multiple technologies and high performance routing across large infrastructures.
OM1/OM2/OM3/OM4/OM5 Different Multimode fibre standards - see FAQ here for more information