通信领域专业术语中英文对照翻译(一)

通信领域专业术语中英文对照翻译（一）

C

连接性故障管理

Connectivity

Fault

Management

(CFM)

E

封装Encapsulation

是一种端到端业务级的OAM协Connection）进行主动的故障诊断。通过使用故障管理功能有效的降低网络维护成本，提高以太网的可维护性。

封装是分层协议所采用的一种映射进底层协议的数据部分，数据外层由底层协议开销封装，构成底层协议报文结构。如来自IP协议的IP报文，映射进802.1Q协议的数据部分，外层由802.1Q

It is an end-to-end OAM protocol, used to

(Ethernet Virtual Connection). Using fault

management function is effective to reduce

the network maintenance cost and improve

the maintainability of the Ethernet

Encapsulation is a technique used by

protocol accepts a packet from a higher

level protocol, then places it in the data

portion of the lower-level frame. Such as

an IP packet from IP protocol is placed

into the data portion of 802.1Q, its

frame head, so as to form a VLAN frame

structure

以太网线性保护倒换Ethernet Linear

Protection

Switching

(ELPS)

基于ITU-T G.8031标准的APS（Automatic

Switching）协议，用于保护一条以太网连接，它是一种端到端的保护技术。包括两种线性保护方式：线性1:1保护倒换和线性1+1保护倒换。

基于ITU-T G.8032标准的自动以太网环网保护倒换Ethernet Ring

Protection

Switching

(ERPS)

Protection Switching）协议，是一种专门应用于以太网环的链路层协议，正常情况下，它在以太网环中能够防止数据环路引起的广播风暴，当以太网环上链路或设备故障时，能迅速切换到ITU-T G.8031 standard based APS

is an end to end protection technology used

to protect an Ethernet connection. It

includes two kinds of linear protections:

linear 1:1 protection switching and linear

1+1 protection switching.

ITU-T G.8032 standard based Automatic

dedicated protocol used in link layer

protocol of Ethernet ring. Normally, in

Ethernet ring, it can prevent broadcast

storm which is caused by data loop, when a

failure occurs to Ethernet ring link or

equipment, it can rapidly switch to the

recovery

议，用于对EVC（Ethernet Virtual conduct active fault diagnosis to EVC

技术。将来自上层协议的报文，layered protocols in which a low level

帧头封装，构成VLAN帧结构。 outer-layer is encapsulated by 802.1Q

Protection (Automatic Protection Switching) protocol

保护倒换（APS，Automatic protection switching (APS) protocol is a

备份链路，保证业务快速恢复。 backup link to ensure rapid business

L

标签Label

为了便于在程序中识别某些特别定义的数据块或程序段而定义的一组符号。在MPLS中，标签是一个长度固定、只具有本地意义的短标识符，用于唯一标识一个分组所属的转发等价类（FEC）

Label is a group of symbols which are used

to identify certain block of data or program

segment in the program. In MPLS, label is a

short identifier with fixed length and local

significance, used as a unique identification

for forwarding equivalence class (FEC)

which a packet belongs to.

One logical aggregation group is formed

through aggregating multiple physical

Ethernet interfaces and the physical links in

the same aggregation group is seen as one

logical link, so as to implement link

protection and load sharing between

devices, greatly enhance reliability of

service between devices, and enhance the

bandwidth

hardware.

without upgrading the

链路聚合Link 通过将多个物理以太网接口聚Aggregation 合在一起形成一个逻辑上的聚合组，并把同一聚合组内的多条物理链路视为一条逻辑链路。链路聚合可以实现流量在聚合组各成员接口之间负载分担，在有效的提高了设备之间链路可靠性的同时，还在不进行硬件升级的条件下增大了带宽。

M

城域网Metropolitan

Area Network

能够在一个城市区域的有效距离将多个局域网连接起来的高速计算机网络，覆盖范围介于局域网和广域网之间。传输媒介采用光纤，可用做骨干网。

MAN is a large computer network that

provides Internet connectivity for LANs in

a metropolitan region, its geographic scope

falls between a WAN and LAN. MAN can

use optical fiber as its transmission

medium, it can also be used as the

backbone network

Q

QinQ (802.1Q

in 802.1Q)

QinQ〔也称Stacked VLAN 或Double VLAN〕技术是对802.1Q的扩展，是IEEE在802.1ad标准中定义的。基本QinQ是一种简单的二层VPN隧道技术，它通过在运营商接入端为用户的使报文携带两层VLAN Tag穿在公网中，报文只根据外层QinQ is (also called Stacked VLAN or

Double VLAN) extended from 802.1Q,

defined by IEEE 802.1ad recommendation.

Basic QinQ is a simple layer-2 VPN tunnel

technology, encapsulating outer VLAN Tag

for client private packets at carrier access

passing through trunk network (public

transmit according to outer VLAN Tag, the

私网报文封装外层VLAN Tag，end; the packets take double VLAN Tag

越运营商的骨干网络（公网）。network). In public network, packets only

VLAN Tag（即公网VLAN Tag）private VLAN Tag are transmitted as data

进行传输，用户的私网VLAN in packets

Tag则当作报文中的数据部分来进行传输。

S

是一种采用以太网链路码流恢复时钟的技术，类似于SDH时钟同步质量，同步以太网提供高精度的频率同步。不同于传统网同步以太网SyncE

络在接收节点只进行基于数据包的同步，同步以太网节点的内部时钟同步机制是实时的。

It is a technology which can use Ethernet

link stream to recover clock, similar to the

SDH clock synchronization quality. SyncE

provides synchronous frequency with high

precision. Differ from the traditional

network

receiving

is in real time

which

node,

only

internal

conduct

clock

synchronization based on data packet at the

synchronization mechanism of SyncE node