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FAQs 运营、管理和维护(OAM)意味着什么?
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    • CES PW净荷与SAT PW净荷的主要区别是什么?
    • PW用于什么样的AAL1 (ATM适配层1)?
    • TDM PW是否可用于实现电信DS0交叉连接?
    • 为什么有多种PW报头字节(MEF-8、MPLS、UDP/IP、L2TPv3、IPv4和IPv6)?
    • 什么是OAM时标?
    • 什么是TDM伪线(PW)?
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    • 什么是差分时钟恢复(DCR)?
    • 什么是本地时标?
    • 什么是自适应时钟恢复(ACR)?
    • 净荷中应包含多少字节?
    • 时分复用(TDM) PW定时是什么意思?
    • 运营、管理和维护(OAM)意味着什么?
    • 高级数据链路控制(HDLC)必须怎样处理TDMoP?
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  • 使用AD936X Evaluation Software导出配置时,软件提示滤波器系数过多。

运营、管理和维护(OAM)意味着什么?

对于T1/E1线,OAM通常意味着T1/E1报警、性能监测(PM),以及与T1/E1成帧模式通信的环回。PW报警OAM采用每个PW报头中的L位和R位通信。TDMoP器件还使外部CPU在以太网接口发送和接收虚电路连通性验证(VCCV)和城域以太网联盟(MEF) OAM消息/报文。这些消息/报文独立于TDM PW报文。PW VCCV OAM可用于类似PW连接建立、PM及维护的功能。MEF OAM是一种以太网协议,可包括IEEERegistered 802.1ag和其他专用的以太网OAM功能(例如连接连通性检查)。

Maxim的TDMoP产品支持以下三种类型的OAM报文:
UDP/IP相关OAM报文:报文的绑定标识号与OAM ID配置寄存器中配置的数值之一(最多8个不同值)之间匹配。
VCCV OAM报文(带内性能检测器):根据control_word_oam_mask_n配置寄存器和control_word_oam_value配置寄存器的组合创建一个1至16位值。当该值与控制字(31:16)位匹配时,识别出OAM报文。只有OAM_ID_in_CW绑定配置位被置位时,才考虑这一匹配。
MEF OAM报文:报文Ethertype和Mef_oam_ether_type配置寄存器匹配。
Tags: 000101437 DS34T101GN+
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