EMC DS-8B manual Glossary

Glossary

M

MIB Management Information Base. SNMP structure that provides configuration and device information to assist with device management.

Multicast Transmission of data from a single source to a number of specified N_Ports. See also Broadcast, Unicast.

Multimode Fibre-optic cabling specification allowing up to 500 meters between devices.

N

N_Port Node Port. Port that can attach to a fibre channel port. See also NL_Port, Nx_Port.

Name server Service of storing names, addresses, and attributes for up to 15 minutes, provided by a switch to other entities in fabric. Defined by fibre channel standards, and existing at a well-known address. Also called Simple Name Server, SNS, or directory service. See also FS.

NL_Port Node Loop Port. An N_Port that can use loop protocol Used to connect equipment ports to fabric in loop configuration through FL_Port. See also N_Port, Nx_Port.

Node Fibre channel entity with one or more N_Ports or NL_Ports.

Node name Unique identifier for a node, communicated during login and port discovery.

Non-participatingMode in which L_Port is inactive in loop and cannot arbitrate or send

mode frames, but can retransmit received transmissions. Port enters mode if there are more than 127 devices in loop, and an AL_PA cannot be acquired. See also Participating mode.

Nx_Port Node port that can operate as either an N_Port or NL_Port.

O

Ordered set A type of transmission word that occurs outside of frames, and is used to manage frame transport and differentiate fibre channel control information from data. See also Data word, Transmission word. Use 8b/10b mapping and begin with the K28.5 character. They

Departmental Switch Models DS-16B and DS-8B Web Tools User Guide

g-9