Cisco Systems OL-11291-01 manual Target device, GL-2

Glossary

dedicated line

device

DHCP

DLSw

Communications line that is indefinitely reserved for transmissions, rather than switched as transmission is required. See also leased line.

See node.

Dynamic Host Configuration Protocol. Provides a mechanism for allocating IP addresses dynamically so that addresses can be reused when hosts no longer need them.

data-link switching. Interoperability standard, described in RFC 1434, that provides a method for forwarding SNA and NetBIOS traffic over TCP/IP networks using data-link layer switching and encapsulation. DLSw uses SSP instead of SRB, eliminating the timeouts, lack of flow control, and lack of prioritization schemes. See also SRB and SSP.

DNS

domain

Domain Name System. System used in the Internet for translating names of network nodes into addresses.

1.In the Internet, a portion of the naming hierarchy tree that refers to general groupings of networks based on organization-type or geography.

2.In SNA, an SSCP and the resources it controls.

Domain Name System

duration

Dynamic Host

Configuration

Protocol

See DNS.

Number of seconds that a collector actively collects network performance statistics at the source router. The default value is forever. The valid range is 1 hour to forever.

See DHCP.

E

echo	Measures the total round-trip latency and other statistics and errors from the source router to the
	target device.

G

graphical user interface

GUI

See GUI.

graphical user interface. User environment that uses pictorial as well as textual representations of the input and output of applications and the hierarchical or other data structure in which information is stored. Conventions such as buttons, icons, and windows are typical, and many actions are performed using a pointing device (such as a mouse). Microsoft Windows and the Apple Macintosh are prominent examples of platforms utilizing a GUI.

	User Guide for Internetwork Performance Monitor
GL-2	OL-11291-01