Huawei Quidway NetEngine 20 series

A Glossary
Quidway NetEngine20/20E
Configuration Guide - Basic Configurations
A-6
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 05 (2010-01-30)
VRRP
Virtual Router Redundancy Protocol. An error tolerant protocol defined in RFC
2338. It forms a backup group for a group of routers in a LAN that functions as
a virtual router.
VTY
Virtual type terminal. A terminal line that is used to access a router through
Telnet.
W
WAN interface
Wide area network interface. An interface that can be a serial interface, E1/CE1
interface, T1/CT1 interface, E2/CE3 interface, E3 interface, T3/CT3 interface,
T3 interface, Packet Over SONET/SDH (POS) interface, Channelized POS
(CPOS) interface, or ATM interface. The router can exchange data with the
network device in the external network through the WAN interface.
X
X.25
A protocol applied on the data link layer that defines how connections between
Data Terminal Equipment (DTE) and Data Circuit-terminal Equipment (DCE)
are maintained for remote terminal access and computer communications in
Packet Data Networks (PDNs).
XModem
A transmission protocol in the format of the binary code.
XOT
X.25 over TCP. A protocol that implements the interconnection between two
X.25 networks through the TCP packet bearing X.25 frames.