A Glossary
Quidway NetEngine20/20E
Configuration Guide - Basic Configurations
A-2
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 05 (2010-01-30)
C
CLI
Command Line Interface. An interface that allows the user to interact with the
operating system. Users can configure and manage the NE20/20E by entering
commands through the CLI.
Congestion avoidance
A flow control mechanism that is used to relieve network overload by adjusting
the network traffic. When congestion occurs and becomes worse, the packet is
discarded according to the monitoring results of network resources.
Congestion management
A flow control measure to solve the problem of network resource competition.
When the network congestion occurs, it puts the packet into the queue for
buffer and determines the order of forwarding the packet.
Command line level
The priority of the system command that is divided into 4 levels. Users of a
level can run the command only of the same or lower level.
D
Interface mirroring
A method of copying the packet of the mirrored interface to the other mirroring
interfaces to forward the packet.
E
Ethernet
A baseband LAN specification created by Xerox and developed by Xerox,
Intel, and Digital Equipment Corporation (DEC). This specification is similar
to IEEE802.3.
Ethernet_II
An encapsulation format of the Ethernet frame. Ethernet_II that contains a
16-bit protocol type field is the standard ARPA Ethernet Version 2.0
encapsulation.
Ethernet_SNAP
An encapsulation format of the Ethernet frame. The frame format complies
with RFC 1042 and enables the transmission of the Ethernet frame on the IEEE
802.2 media.
F
FIFO
First In First Out. A queuing scheme in which the first data into the network is
also the fist data out of the network.
File system
A way in which files and directories in the storage devices are managed, such
as creating a file system, creating, deleting, modifying and renaming a file or
directory or displaying the contents of the file.
FTP
File Transfer Protocol. An application protocol in the TCP/IP stack, used for
transferring files between remote hosts. FTP is implemented based on the file
system.
H
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