3Com 3c17300 Implementation Guide - Page 98

MIBs are used by the Simple Network Management Protocol SNMP

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100 GLOSSARY loop An event that occurs when two network devices are connected by more than one path, thereby causing packets to repeatedly cycle around the network and not reach their destination. MAC Media Access Control. A protocol specified by the IEEE for determining which devices have access to a network at any one time. MAC address Media Access Control address; also called hardware or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long. main port The port in a resilient link that carries data traffic in normal operating conditions. MDI Medium Dependent Interface. An Ethernet port connection where the transmitter of one device is connected to the receiver of another device. MDI-X Medium Dependent Interface Cross-over. An Ethernet port connection where the internal transmit and receive lines are crossed. MIB Management Information Base. A collection of information about the management characteristics and parameters of a networking device. MIBs are used by the Simple Network Management Protocol (SNMP) to gather information about the devices on a network. The Switch contains its own internal MIB. multicast A packet sent to a specific group of endstations on a network. multicast filtering A system that allows a network device to only forward multicast traffic to an endstation if it has registered that it would like to receive that traffic. NIC Network Interface Card. A circuit board installed in an endstation that allows it to be connected to a network. Policy Comprises a set of "rules" that are applied to a network so that a network meets the needs of the business. That is, traffic can be prioritised across a network according to its importance to that particular business type.

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100
G
LOSSARY
loop
An event that occurs when two network devices are connected by
more than one path, thereby causing packets to repeatedly cycle
around the network and not reach their destination.
MAC
Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.
MAC address
Media Access Control address; also called hardware or physical address.
A layer 2 address associated with a particular network device. Most
devices that connect to a LAN have a MAC address assigned to them
as they are used to identify other devices in a network. MAC addresses
are 6 bytes long.
main port
The port in a resilient link that carries data traffic in normal operating
conditions.
MDI
Medium Dependent Interface. An Ethernet port connection where the
transmitter of one device is connected to the receiver of another
device.
MDI-X
Medium Dependent Interface Cross-over. An Ethernet port connection
where the internal transmit and receive lines are crossed.
MIB
Management Information Base. A collection of information about the
management characteristics and parameters of a networking device.
MIBs are used by the Simple Network Management Protocol (SNMP) to
gather information about the devices on a network. The Switch
contains its own internal MIB.
multicast
A packet sent to a specific group of endstations on a network.
multicast filtering
A system that allows a network device to only forward multicast traffic
to an endstation if it has registered that it would like to receive that
traffic.
NIC
Network Interface Card. A circuit board installed in an endstation that
allows it to be connected to a network.
Policy
Comprises a set of “rules” that are applied to a network so that a
network meets the needs of the business. That is, traffic can be prioritised
across a network according to its importance to that particular business
type.