24-Port Layer 3 Switch Management Guide

G LOSSARY
Glossary-5
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).
Out-of-Band Management
Management of the network from a station not attached to the network.
Port Authentication
See IEEE 802.1x.
Port Mirroring
A method whereby data on a target port is mirrored to a monitor port for
troubleshooting with a logic analyzer or RMON probe. This allows data on the
target port to be studied unobstructively.
Port Trunk
Defines a network link aggregation and trunking method which specifies how to
create a single high-speed logical link that combines several lower-speed physical
links.