User's Manual

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Glossary
ITU
International Telecommunication Union
ITU-T
Telecommunication Standardization Section of ITU
LAN Segment
Separate LAN or collision domain.
Layer 2
Data Link layer in the ISO 7-Layer Data Communications Protocol. This is related
directly to the hardware interface for network devices and passes on traffic based on
MAC addresses.
LED
Light emitting diode used for monitoring a device or network condition.
Local Area Network (LAN)
A group of interconnected computer and support devices.
Media Access Control (MAC)
A portion of the networking protocol that governs access to the transmission
medium, facilitating the exchange of data between network nodes.
Management Information Base (MIB)
An acronym for Management Information Base. It is a set of database objects that
contains information about a specific device.
Maximum Transfer Unit (MTU)
The maximum transfer unit for traffic crossing this device. MTU should be set to a
value that minimizes unnecessary fragmentation and maximizes the transfer of large
sequential data streams.
Media Dependent Interface (MDI)
The IEEE standard for the UTP interface to twisted-pair Ethernet. MDI defines a
straight-through pin assignment that allows you to connect the router to any
workstation or server that has a properly installed network adapter card using the
supplied crossover cable. Pin-out assignments are shown in Appendix B.
Media Dependent Interface - Crossed (MDI-X)
MDI-X port types cross the receive and transmit signals internally, and can be used
with straight-through cable to connect the router to a similar networking device (such
as a hub or switch). Note that if you use the supplied crossover cable to connect to a