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LOSSARY
Glossary-5
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.
Layer 3
Network layer in the ISO 7-Layer Data Communications Protocol. This layer
handles the routing functions for data moving from one open system to another.
Link Aggregation
See Port Trunk.
Link Aggregation Control Protocol (LACP)
Allows ports to automatically negotiate a trunked link with LACP-configured ports
on another device.
Management Information Base (MIB)
An acronym for Management Information Base. It is a set of database objects that
contains information about a specific device.
Multicast Switching
A process whereby the switch filters incoming multicast frames for services for
which no attached host has registered, or forwards them to all ports contained
within the designated multicast VLAN group.
Network Time Protocol (NTP)
NTP provides the mechanisms to synchronize time across the network. The time
servers operate in a hierarchical-master-slave configuration in order to synchronize
local clocks within the subnet and to national time standards via wire or radio.
Open Shortest Path First (OSPF)
OSPF is a link-state routing protocol that functions better over a larger network
such as the Internet, as opposed to distance-vector routing protocols such as RIP.
It includes features such as unlimited hop count, authentication of routing updates,
and Variable Length Subnet Masks (VLSM).