Hp MPX200 Multifunction Router User Manual download pdf (Page 199)

ISR654602-00 H Glossary-5

iSR6200 Router Manager

User’s Guide

L_Port

Loop port. Does arbitrated loop functions

and protocols. NL_Ports and FL_Ports are

examples of loop-capable ports. See

E_Port, F_Port, FL_Port, G_Port, N_Port,

NL_Port.

loop port

See L_Port.

LIP

Loop initialization process. The initializa-

tion process in an arbitrated loop that

occurs when the loop is powered up or a

new device is added. One function of a LIP

is to assign addresses. All data transmis-

sion on the loop is suspended during a LIP.

load balancing

A software feature that improves system

performance by balancing device access

between multiple ports for maximum

resource efficiency.

loop initialization process

See LIP.

loopback

Diagnostic tool that routes transmit data

through a loopback connector back to the

same adapter.

LUN

Logical unit number, a subdivision of a

SCSI target. It is the small integer handle

that differentiates an individual disk drive

or partition (volume) within a common

SCSI target device such as a disk array.

Technically, a LUN can be a single

physical disk drive, multiple physical disk

drives, or a portion (volume) of a single

physical disk drive. However, LUNs are

typically not entire disk drives but rather

virtual partitions (volumes) of a RAID set.

Using LUNs, the Fibre Channel host can

address multiple peripheral devices that

may share a common controller.

maintenance button

Multifunction momentary switch on the

front panel of the router.

management workstation

PC workstation used to manage routers

remotely by connecting to the routers

using the SANsurfer Router Manager or

CLI commands.

maximum transmission unit

See MTU.

media

Physical-layer information carriers. Fibre

Channel supports several different

physical media: copper, multimode optical,

and single-mode optical. All Fibre Channel

protocols are supported on all media.

MIB

Management information base. A set of

guidelines and definitions for SNMP

functions.

mid-plane

Located inside the iSR6200 chassis

between the blades and their corre-

sponding PCMs, the mid-plane connects

the removable power supply and the

iSR6200 blades.

MTU

Maximum transmission unit. Refers to the

size (in bytes) of the largest packet (IP

datagram) that a specified layer of a

communications protocol can transfer.

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