User manual

LOSSARY

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ES-2000 Series

MD5 MD5 Message-Digest is 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.

MIB Management Information Base. An acronym for Management Information

Base. It is a set of database objects that contains information about a

specific device.

MRD Multicast Router Discovery is a A protocol used by IGMP snooping and

multicast routing devices to discover which interfaces are attached to

multicast routers. This process allows IGMP-enabled devices to determine

where to send multicast source and group membership messages.

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.

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.

QOS Quality of Service. QoS refers to the capability of a network to provide

better service to selected traffic flows using features such as data

prioritization, queuing, congestion avoidance and traffic shaping. These

features effectively provide preferential treatment to specific flows either

by raising the priority of one flow or limiting the priority of another flow.

RADIUS Remote Authentication Dial-in User Service. RADIUS is a logon

authentication protocol that uses software running on a central server to

control access to RADIUS-compliant devices on the network.

RMON Remote Monitoring. RMON provides comprehensive network monitoring

capabilities. It eliminates the polling required in standard SNMP, and can

set alarms on a variety of traffic conditions, including specific error types.