最全的OLT设备介绍，关于OLT技术知识都在之里面。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">应一些朋友的留言，希望我们发一期关于OLT相关的介绍；一直以来，很多朋友都会问到OLT是什么设备？关于olt对很多弱电朋友来说，既熟悉又陌生，熟悉是因为各种通信组网都有可能会用到它，如小区光纤入户、酒店iptv组网等项目都会用到它，做网络项目的经常会听到；陌生是因为对OLT设备的使用了解不多；在我们弱电VIP技术群中也经常讨论到OLT相关的问题。seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
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http://p3.pstatp.com/large/pgc-image/af2844b6cdd44ba6bbe4dd0bb01c55f0
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">那么本期我们就一起来看下OLT相关的内容。
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http://p9.pstatp.com/large/pgc-image/9aeaa88d82704241a53db367f98b14c0
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">一、OLT基本概念
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">OLT（Optical Line Terminal）光线路终端，PON网络由OLT、ODN和ONU三部分组成。OLT属于接入网的业务节点侧设备，通过SNI接口与相应的业务节点设备相连，完成接入网的业务接入。
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http://p3.pstatp.com/large/pgc-image/af1655557ce44cebadda36a4dd61bc22
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">在PON技术应用中，OLT设备是重要的局端设备，它实现的功能是：
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">1、与前端（汇聚层）交换机用网线相连，转化成光信号，用单根光纤与用户端的分光器互联。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">2、实现对用户端设备ONU的控制、管理、测距等功能。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">3、OLT设备和ONU设备一样，也是光电一体的设备。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">OLT上连局端设备，如果光信号过于强（有时因为距离短光信号损耗小）需要加上衰减器。OLT下联ONU，在两者之前接分光器。
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http://p9.pstatp.com/large/pgc-image/1c1fe89d84414545a1e03f8e30b42807
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">为满足不同的应用场景，OLT与多种类型的ONU配合，实现FTTC/FTTB、FTTH、FTTO、FTTM和D-CCAP多种光接入组网应用。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">PON网络承载语音、 Internet上网、IPTV视频和数据专线等业务。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">OLT接入示意图...
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http://p3.pstatp.com/large/pgc-image/ddce33bc901c4e4da7064989239fd391
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">二、各大厂家OLT设备介绍
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">为了方便大家更清楚的了解，我们通过厂家设备进行举例详解。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">1、华为 MA5680T系列
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">SmartAX MA5680T/MA5683T/MA5608T设备是华为技术有限公司推出的GPON/EPON一体化光接入产品。具有超高汇聚交换能力，3.2T背板容量，960G交换容量，512K MAC地址容量，最大支持44路10 GE或 768个GE接入。
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http://p1.pstatp.com/large/pgc-image/3c4f0e5ed41143fc8b8dc8720c27609b
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">▲SmartAX MA5680T
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http://p3.pstatp.com/large/pgc-image/35dc6292495746bdb6b0f90287bb9cad
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">▲SmartAX MA5683T
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http://p3.pstatp.com/large/pgc-image/daf9c5de4301453facab2e4857b4cc0d
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">▲SmartAX MA5608T
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http://p1.pstatp.com/large/pgc-image/b70334c759f04844ab5d7e48448829b8
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">2、中兴ZXA10 C300
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">ZXA10 C300是一款大容量、高密度的xPON汇聚接入平台，支持面向下一代网络的HSI、VoIP、TDM、IPTV、CATV、移动2G/3G、WiFi等全业务的接入汇聚和管理控制，并提供电信级的QoS和安全可靠性保障。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">硬件特性
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http://p9.pstatp.com/large/pgc-image/9bbc48ee875245b2a7ae1d563265950f
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">产品结构
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http://p3.pstatp.com/large/pgc-image/e1089f9f3dd245929b6b9027fc760a87
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">ZXA10 C300与C220主要指标对比
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http://p1.pstatp.com/large/pgc-image/d4765be112084cf5950d6a6e34faac77
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">3、上海贝尔7360 ISAM FX
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX系列OLT是第三代具有应用使能机制的OLT系统，其功能远远强于第一代的互联网接入平台和第二代的三重播放接入平台系统，是“三网融合”全业务接入的最佳选择。
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http://p9.pstatp.com/large/pgc-image/9aeaa88d82704241a53db367f98b14c0
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http://p1.pstatp.com/large/pgc-image/dc17655b13c04335bf3ec4f7c1dedc5a
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX系列OLT可满足运营商对多业务接入、多种FTTx部署场景、多种PON接入技术融合的要求。7360 ISAM FX系列OLT能够集EPON, 10G EPON, GPON, 10G GPON, P2P和VDSL2等多种接入（点对多点、点对点、DSL）于同一平台。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX系列根据容量大小不同，共有三款产品：
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http://p9.pstatp.com/large/pgc-image/bcd15ff7b53847148251e9ff0a474856
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX-16，提供16个业务插槽
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX-8，提供8个业务插槽
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7360 ISAM FX-4，提供4个业务插槽
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http://p3.pstatp.com/large/pgc-image/d3e16f1cdabd427981b657d9c1d651cd
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">▲7360 ISAM FX-16
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http://p9.pstatp.com/large/pgc-image/e2c0841b02884beb89d1a83d043c75d2
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">▲7360 ISAM FX-8
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">4、烽火AN5516-01
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">烽火AN5516系列电信级万兆平台PON局端设备，采用业界领先技术，全前插板、前出线设计，提供高密度xPON口盘，支持GE/10GE/STM-1/E1上联接口，可实现GPON/EPON/10G PON/P2P混插，持续演进，有效保护网络建设投资；采用高性能芯片，绿色节能，提高网络的可靠性，缩减运维成本。
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http://p3.pstatp.com/large/pgc-image/6815dc9323934b39a92a78315378f8b1
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">•大容量、高密度电信级多万兆平台，单框支持256个PON口，交换容量4.384G，背板带宽14.08T
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">•提供万兆高速上联板卡：1*10GE+ 4*GE ,2*10GE+ 2*GE, 6*GE（光、电可选)
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">•支持STM-1/E1专线上行接口、支持最大16×16GE专线下行接口
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">•1:32/64/128光分路比、支持超长传输距离、支持CLASS C+光模块
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">三、OLT实物组成
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">OLT通常由以下几部分组成：
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http://p3.pstatp.com/large/pgc-image/b8a30fd9663345e9a396f03be32179d9
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">1、控制板（也叫主控板或者叫超级控制单元）一般一台OLT有主备2张板子，
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">2、直流电源板（从开关电源的负48伏来的电源）一般也是主备2张板子
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">3、风扇单元（主要设备的散热和环境监控等）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">4、机框（或者叫业务框）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">5、上行板件：GE光接口板（含扣板）、光收发一体化模块、一般一张板子是2路GE口（目前10GE的已经商用），上行板件通过传输（OTN传输连接到BRAS（宽带远程接入服务器）等汇聚交换机或者直连BRAS等设备和SR设备，如果有IPTV业务的还需接入相应BNG设备）上行板件根据光模块不一样传输距离（中间不加传输）可以达到10—40KM。
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http://p9.pstatp.com/large/pgc-image/9aeaa88d82704241a53db367f98b14c0
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">6、下行板件（也叫业务版或者叫PON板），一般OLT设备具备多端口的PON板（比如一张板子有8个PON端口），每个端口下去通过分光器（不超过1:64）连接ONT终端。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">下行板件传输距离和衰耗都有其限制，是因为ONT和OLT之间具有测距等因素。如8端口GPON OLT接口板(含可插拔ClassB+光模块)要求ODN衰耗在-28db以内，8端口GPON OLT接口板(含可插拔ClassC+光模块)要求ODN传输衰耗在-32db以内；但是考虑到后期维护因素和其它综合原因：要求在初期工程ClassB+光模块的板子控制在-25db以内，ClassC+光模块的板子控制在-29db以内。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">7、根据业务需要OLT还可以插入（都可以混插）TDM业务版、以太网业务版、16路E1业务版等板件。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">8、新增OLT设备一定考虑满配置耗电量（1400W左右计算）来计算电源线的大小，空开占用的大小（占用2组，一主一备）。根据以前经验一般空开选用63A的；线径选用16mm²的多股铜芯线（阻燃的），地线选用16mm²的黄绿相间的铜芯线。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">9、注意OLT上行占用端子便于开通时候不出问题，下行占用端子等都要考虑清楚。尾纤长度要测量好（光跳纤是厂家提供，电源线厂家提供，但是要注意长度）。以及光跳纤（OLT侧是SC头（下行）和LC头上行）在ODF侧法兰类型。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">四、OLT应用的场景部署
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">OLT部署时，应根据不同业务类型、客户需求（远期目标）和区域等选择不同的接入策略。
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">1、普通互联网集团客户场景FTTO
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http://p1.pstatp.com/large/pgc-image/bfabc1dd191748618e68af80d613e5c5
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">2、家庭客户场景一FTTB+LAN
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http://p3.pstatp.com/large/pgc-image/2fb2a64a6b76419ca5fb4518ce22d386
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">3、家庭客户场景一FTTH
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http://p1.pstatp.com/large/pgc-image/9e52a1130ee049ac82f53029ed6e1a02
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seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">4、WLAN客户场景FTTB+LAN
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p3.pstatp.com/large/pgc-image/42dc3dff29104015bcf745677a358594
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">5、FTTB农村建设场景一
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/bce83c6f813a4bf6882fdfd0e5588c13
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">6、FTTB农村建设场景二
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p3.pstatp.com/large/pgc-image/00915691bd7e467b815d01f3747bb969
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">五、OLT安装规范
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/d700a07cb65f45ed8224a39fef23380d
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/4aee05300f8a4f338b2bda10656ca000
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">seline; word-break: break-word;">六、OLT常用命令
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">维护常用命令（MA5680T）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/a09898a870684f929ddcd10fd3548205
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display board 0
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看所有单板的状态信息
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display board 0/1
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看第一块单板的详细信息
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display version
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看设备基本信息（设备运行时间）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display language
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看设备的版本
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/25c28c32328941adb91ee7faa6d9e0d5
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display patch all
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看设备的补丁状态
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display mac-address all
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看设备下所有的mac地址
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display mac-address board 0/1
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看第一块单板下的mac地址
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display mac-address port 0/1/0
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看此端口下的mac地址
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display pstn state 0/2
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看第二块单板的语音用户状态
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display if-h248 all
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看h248端口状态
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
http://p1.pstatp.com/large/pgc-image/a731f65047dd4c80a2913ae6004881b6
seline; word-break: break-word; max-width: 100%; display: block; border-radius: 4px;"/>seline; word-break: break-word;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display if-h248 attribute all
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看h248接口属性信息
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display service-port port 0/1/0 ont 1（0/1/0是框号/槽号/端口号 1是ONU id）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看该业务端口是否在线/ vlan/配置
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看ONU的状态
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">interface gpon 0/1 (0是框号 1是板号)
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display ont info 0 1（0是端口号 1是ONU id 号）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">#查看OLT收ONU光信息
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">interface epon 0/1 (0是框号 1是板号)
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display ont optical-info 1 1（0是端口号 1是ONU id 号）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">查看某一单板所有用户的状态
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display board 0/1 (0是框号 1是板号)
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">查看ONU收光功率
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">interface gpon 0/1 (0是框号 1是板号)
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display ont optical-info 0 1 （0是端口号 1是ONU id 号）
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display ont info ?
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">命令模式：
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-desc 根据描述信息查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-ip 根据IP地址查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-loid 根据逻辑标识查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-mac 根据MAC地址查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-password 根据密码查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">by-sn 根据序列号查找ONT
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">查看上行板流量
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">interface giu 0/17
seline; word-break: break-word; color: rgb(93, 93, 93); white-space: normal;">display port traffic 1
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