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Glossary
Glossary-4
IP Multicast Filtering
A process whereby this switch can pass multicast traffic along to participating hosts.
IP Precedence
The Type of Service (ToS) octet in the IPv4 header includes three precedence bits
defining eight different priority levels ranging from highest priority for network control
packets to lowest priority for routine traffic. The eight values are mapped one-to-one
to the Class of Service categories by default, but may be configured differently to
suit the requirements for specific network applications.
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.
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.
MD5 Message-Digest Algorithm
An algorithm that is used to create digital signatures. It is intended for use with 32 bit
machines and is safer than the MD4 algorithm, which has been broken. MD5 is a
one-way hash function, meaning that it takes a message and converts it into a fixed
string of digits, also called a message digest.
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.
Out-of-Band Management
Management of the network from a station not attached to the network.