User Manual

Psion Teklogix 9160 Wireless Gateway User Manual E-17

Appendix E: Glossary

LLC

The Logical Link Control (LLC) layer controls frame synchronization, flow control,

and error checking. It is a higher level protocol over the PHY layer, working in

conjunction with the MAC layer.

MAC

The Media Access Control (MAC) layer handles moving data packets between

NICs across a shared channel. It is a higher level protocol over the PHY layer. It

provides an arbitration mechanism in an attempt to prevent signals from colliding.

It uses a hardware address, known as the MAC address, that uniquely identifies each

node of a network. IEEE 802 network devices share a common 48-bit MAC

address format, displayed as a string of twelve (12) hexadecimal digits separated by

colons, for example

FE:DC:BA:09:87:65

MDI and MDI-X

Medium Dependent Interface (MDI) and MDI crossover (MDIX) are twisted pair

cabling technologies for Ethernet ports in hardware devices. Built-in twisted pair

cabling and auto-sensing enable connection between like devices with the use of a

standard Ethernet cable. (For example, if a wireless access point supports

MDI/MDIX, one can successfully connect a PC and that access point with an

Ethernet cable rather than having to use a crossover cable).

MIB

Management Information Base (MIB) is a database of objects used for network

management. SNMP agents along with other SNMP tools can be used to monitor

any network device defined in the MIB.

MSCHAP V2

Microsoft Challenge Handshake Authentication Protocol Version 2 (MSCHAP V2)

provides authentication for PPP connections between a Windows-based computer

and an Access Point or other network access device.