NETGEAR L3 manual Megabits per second

7000 Series L3 Managed Switch Reference Manual for Software v2.0

Mbps

Megabits per second.

MBONE

See “Multicast Backbone” on page 15.

MD5

MD5 creates digital signatures using a one-way hash function, meaning that it takes a message and converts it into a fixed string of digits, also called a message digest.

When using a one-way hash function, one can compare a calculated message digest against the message digest that is decrypted with a public key to verify that the message hasn't been tampered with. This comparison is called a "hashcheck."

MDC

Management Data Clock.

MDI

Management Data Interface.

MDIO

Management Data Input/Output.

MDI/MDIX

In cable wiring, the concept of transmit and receive are from the perspective of the PC, which is wired as a Media Dependant Interface (MDI). In MDI wiring, a PC transmits on pins 1 and 2. At the hub, switch, router, or access point, the perspective is reversed, and the hub receives on pins 1 and 2. This wiring is referred to as Media Dependant Interface - Crossover (MDI-X). See “Auto-negotiation” on page 3.

MIB

See “Management Information Base” on page 14.

MOSPF

See “Multicast OSPF” on page 16.

MPLS

See “Multi-Protocol Label Switching” on page 16.

Multicast Backbone

The MBONE is a virtual network. It is layered on top of portions of the physical Internet to support routing of IP multicast packets since that function has not yet been integrated into many production routers. The network is composed of islands that can directly support IP multicast, such as multicast LANs like Ethernet, linked by virtual point-to-point links called "tunnels". The tunnel endpoints are typically workstation-class machines having operating system support for IP multicast and running the "mrouted" multicast routing daemon.

Glossary C-15