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1、HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and p
2、artners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting
3、Standard”.WiMAX是一种基于IEEE 802.16协议的宽带无线接入技术,了解它的基本概念和技术优势,是我们实现和应用的前提.本次课程主要介绍了WiMAX的基本概念,应用场景及其网络架构.Page 1HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptB
4、ullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that yo
5、u should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.学习完此课程,您将会:了解WiMAX的定义及相关协议标准了解WiMAX的应用场景及其技术优势了解WiMAX的网络架构Page 2HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT M
6、ediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are
7、 an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.第第第第1 1章章章章 WiMAX WiMAX 基本概念基本概念基本概念基本概念第第2章章 WiMAX 应用应用第第3章章 WiMAX 网络架构网络架构Page 3HUAWEI TECHNOLOGIES CO., LTD
8、.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right cor
9、ner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.无线通信的发展无线通信的发展2G2.
10、5G3GPage 4HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by custo
11、mers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Ty
12、pesetting Standard”.WiMAX的产生背景的产生背景560120(Km/h)BWA (WiMAX 802.16d, 802.16e)(GSM, UMTS, CDMA, HSDPA)Data RatePage 5HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :
13、20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note
14、 that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.什么是什么是WiMAX?Worldwide Interoperability for Microwave AccessIEEE 802.15 BluetoothWANMANLAN PANETSI HiperPANIEEE 802.11 Wireless LANETSI HiperLANIEEE 802.16-Wireless MANETSI Hipe
15、rMAN & HiperAccessIEEE 802.20(proposed)3GPP,3GPP2全球微波接入互操作性全球微波接入互操作性nIEEE802.16标准定义的一种无线宽带城域网(MAN, Metropolitan Area Network)技术;n顺应“无线+宽带”的网络发展趋势,应用了OFDMA (Orthogonal Frequency Division Multiplex Access)和MIMO (Multiple Input Multiple Output) 等领先技术,具有鲜明的内在特性和明显的宽带优势;n被称为“3.5G”技术或“4G”技术,于2007年10月成为3G
16、的第四个标准.11.09.2024HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used b
17、y customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to
18、the “Typesetting Standard”.协议介绍协议介绍WiMAX 基于基于802.16协议协议,802.16主要提及两个标准主要提及两个标准n802.16d固定宽带无线接入标准n规范了固定接入下用户终端同基站系统之间的空中接口层n802.16e支持移动特性的宽带无线接入标准 n最大特点在于对移动性的支持,可支持用户终端以车辆速度移动n规定了可同时支持固定和移动宽带无线接入系统Page 7HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate
19、Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following ni
20、ne groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX的技术指标的技术指标技术参数技术参数 802.16d 802.16e 带宽带宽(MHz) 1.75-20 1.25-20 频段频段(GHz) 2-11 2-6 移动
21、性移动性 固定或漫游中低车速(120km/h) 传输技术传输技术 多载波,OFDM多载波,OFDMA多址方式多址方式 OFDMA频谱分配单位频谱分配单位 子信道 双工方式双工方式 TDD,FDD峰值速率峰值速率(Mbit/s) 75(20MHz) 15(5MHz) ,30(10MHz)调制方式调制方式 DL:BPSK,QPSK,16QAM,64QAM ;UL:BPSK,QPSK,16QAM小区间切换小区间切换 不支持 支持 增强型技术增强型技术 智能天线,MIMO,HARQ,AMC接入控制接入控制 主动带宽分配,轮询,竞争接入相结合 QoS 支持UGS,ERtPS,RtPS,NrtPS和BE
22、5种QoS等级 省电模式省电模式 不支持 支持空闲,睡眠模式 Page 8HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT Med
23、iumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usag
24、e details, refer to the “Typesetting Standard”.WiMAX的技术优势的技术优势n先进的技术性能n采用OFDMA,MIMO,AMC,HARQ等先进技术;n长距离下的高容量n每个基站的覆盖范围最大可达50公里,典型的基站覆盖范围为610公里;n每扇区吞吐量最高可达75Mbit/s ;n系统容量的可升级性n新增扇区简易;n灵活的信道带宽规划;n开销和投资风险小n提供无线形式的“最后一公里”宽带接入Page 9HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Colo
25、r: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logoty
26、pes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX全球频谱分布全球频谱分布2.3, 2.5, 3.5GHz2.3, 2.5, 3.7GHz2.5, 3.5GHz2.5,
27、 3.5GHz3.5GHz2.3, 2.5, 3.5GHz2.3, 2.5,3.3,3.5GHz2.3G 2.32.4 GHz2.5G 2.4962.690 GHz3.5G 3.43.6 GHz主要频段:Page 10HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22
28、ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that
29、 you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX/EV-DO/HSDPA对比分析对比分析技术技术WiMAX1x EV-DOHSDPA标准标准IEEE 802.16eCDMA-2000WCDMA/UMTS吞吐量吞吐量30Mb/s(10MHz带宽)2.4Mb/s2Mb/s (HSDPA支持超过10Mb/s)覆盖范围覆盖范围典型610Km典型25Km典型25Km频率频率26GHz400,800,700,
30、900,1800,2100MHz900,1800,2100MHz带宽带宽1.2520MHz1.25MHz5MHz(固定)物理层核心技术物理层核心技术OFDMA,MIMO/AAS,AMCCDMA,AMCCDMA,AMC双工方式双工方式TDDFDDFDD移动性移动性低速(5Km/h,60Km/h120Km/hPage 16HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used
31、 by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how o
32、ur design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.基于基于QoS的业务类型的业务类型nUGS (Unsolicited Grant Service)VoIP(不包括静默压缩)nrtPS (Real-time Polling Service)MPEG视频 nertPS (Extended Real-time P
33、olling Service)带静默压缩的VoIP nnrtPS (Non-real-time Polling Service)FTP业务nBE (Best Effort)网络浏览,e-mailPage 17HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBul
34、lets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you
35、should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX 产业链发展产业链发展设备供应商设备供应商运作运作BWA制造商制造商芯片制造商芯片制造商终端生产商终端生产商Page 18HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT M
36、ediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are
37、 an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.第第1章章 WiMAX 基本概念基本概念第第2章章 WiMAX 应用应用第第第第3 3章章章章 WiMAX WiMAX 网络架构网络架构网络架构网络架构Page 19HUAWEI TECHNOLOGIES CO., LT
38、D.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right co
39、rner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX 端到端组网架构端到端组
40、网架构Page 20HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by custo
41、mers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Ty
42、pesetting Standard”.WiMAX 网元介绍网元介绍nMSS-Mobile Subscriber Station(移动用户台移动用户台) nASN-Access Service Network(接入业务网接入业务网) 由BS和ASN-GW组成,管理IEEE 802.16e空中接口,为WiMAX用户提供无线接入,可以连接到多个CSN. nCSN-Connect Service Network(连接业务网连接业务网) 用于连接到Internet,ASP,PLMN网络或其他网络,主要功能有:鉴权,授权和计费(AAA),NSP间漫游,IP地址管理,位置管理,移动性管理,为多种业务提供基
43、础连接,策略控制和QoS管理. nNAP-Network Access Provider(网络接入提供商网络接入提供商) nNSP-Network Service Provider(网络业务提供商网络业务提供商) Page 21HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :
44、20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note
45、 that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WiMAX NWG-ASN Profile AASN-GWBSR2RRAAuth. RelayKey ReceiverHO AuthenticatorRRCKey DistributePC集中式ASN模型 半扁平化结构GW实现切换和无线资源管理功能CSNASNR1AirInterfaceBSBSASN-GWASN-GWHAAAAR6R3R4Inter
46、netPage 22HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential l英文标英文标题题:32-35pt l颜色颜色: R153 G0 B0l内部使内部使用字体用字体 :lFrutigerNext LT Mediuml外部使外部使用字体用字体 : Ariall中文标中文标题题:30-32pt l颜色颜色: R153 G0 B0l字体字体:黑黑体体l英文正英文正文文:20-22ptl子目录子目录 (2-5级级) :18pt l颜色颜色:黑黑色色l内部使内部使用字体用字体 :lFrutigerNext LT Regularl外部使外部使用字体用字体
47、: Ariall中文正中文正文文:18-20ptl子目录子目录(2-5级级):18pt l颜色颜色:黑黑色色l字体字体:细细黑体黑体 l配配色色参参考考方方案案:l建建议议同同一一页页面面内内不不超超过过四四种种颜颜色色,以以下下是是组组配配色色方方案案,同同一一页页面面内内只只选选择择一一组组使使用用.l(仅仅供供参参考考)l客客户户或或者者合合作作伙伙伴伴的的标标志志放放在在右右上上角角.WiMAX NWG-ASN Profile B 分布式ASN架构扁平化结构BS同时具备基站和GW的功能HOPARRA+RRCKey Receiver + DistributeAAA Client DHCP
48、 ProxyAuthenticatorPCCombined BS+ASN-GWInternetR2R1AirInterfaceBS+ASN-GWBS+ASN-GWHAAAAR3R4CSNASNPage 23HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential l英文标英文标题题:32-35pt l颜色颜色: R153 G0 B0l内部使内部使用字体用字体 :lFrutigerNext LT Mediuml外部使外部使用字体用字体 : Ariall中文标中文标题题:30-32pt l颜色颜色: R153 G0 B0l字体字体:黑黑体体l英文正英文正文文
49、:20-22ptl子目录子目录 (2-5级级) :18pt l颜色颜色:黑黑色色l内部使内部使用字体用字体 :lFrutigerNext LT Regularl外部使外部使用字体用字体 : Ariall中文正中文正文文:18-20ptl子目录子目录(2-5级级):18pt l颜色颜色:黑黑色色l字体字体:细细黑体黑体 l配配色色参参考考方方案案:l建建议议同同一一页页面面内内不不超超过过四四种种颜颜色色,以以下下是是组组配配色色方方案案,同同一一页页面面内内只只选选择择一一组组使使用用.l(仅仅供供参参考考)l客客户户或或者者合合作作伙伙伴伴的的标标志志放放在在右右上上角角.WiMAX NWG
50、-ASN Profile CCSNASNASN-GWBSHORRA+RRCAuth. RelayKey ReceiverAuthenticatorKey DistributePCAAA Client DHCP ProxyMIP FA集中式ASN模型 半扁平化结构BS实现切换和无线资源管理功能InternetR2R1AirInterfaceBSBSASN-GWASN-GWHAAAAR6R3R4Page 24HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate
51、 Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following n
52、ine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.接口介绍接口介绍接口接口说明说明R1ASN和MS之间的空中接口,由IEEE 802.16(IEEE P802.16e-2005 and IEEE P802.16-2004)
53、定义R2MS和CSN之间的逻辑接口,从目前定义看,主要承载MS的EAP认证协议和MS IP地址分配报文(DHCP).R3ASN和CSN间接口,可以为承载简单IP,Mobile IP(承载FA和HA间的信令和业务). R4GW间接口,用于切换/R3 Relocation情况下,GW间信令和用户数据的承载R5漫游情况下,Visited CSN和Home CSN间接口,主要为AAA Proxy和AAA Server间接口R6BS和GW间接口,完成BS和GW间信令交互,以及建立R6 Tunnel以承载MS的业务信息R8BS之间的接口,用于传输控制面消息,在某些情况下承载BS之间数据流来保障快速无缝切换
54、.Page 25HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by custome
55、rs and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Type
56、setting Standard”.WiMAX 组网特点组网特点nWiMAX系统可以实现独立组网系统可以实现独立组网n与现存与现存2G/3G网络混合组网网络混合组网n组网速度快组网速度快n成本低成本低Page 26HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialSlide text :20-22pt
57、Bullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be used, please take note that y
58、ou should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.华为的华为的WiMAX组网方案组网方案IMS/NGNHome AgentPolicy Decision FunctionAAAiManager M2000WASN9770BTS3706WASN9770BTS3706RRU3701CBBU3703RRU3701CBBU3703PCMCIAHandsetFixed AccessInternetPSTNMSSASNCSN
59、ASN-RANBS:BBU BBU3703 RRU RRU3701C功能功能:负责无线信号的收发,实现WiMAX网络系统和MS之间的通信ASN-GW WASN9770 功能功能:作为WiMAX网络的分组业务网关,提供分组数据转发,接入控制,QoS和流量管理,计费等功能.11.09.2024HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers a
60、nd partners : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design color
61、s can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.BTS3703规格规格:n 分布式基站n 信道带宽:5/10 MHzn 频点: 2.3G/2.5G/3.5Gn MIMO: 2*1n 发送功率: 10W/20W (3.5G/2.5G)n 重量 BBU: 5KgRRU: 22Kg/15Kgn 尺寸 (宽深高 ,单位mm)BBU: 43630
62、042RRU: 430176571(有外壳) 350125440(无外壳) n 容量容量(单小区单小区):BTS数目: 13吞吐量: 30Mbps (10MHz) 15Mbps (5MHz) 单扇区支持10000个业务CIDn 业务接口业务接口:FE/GEPage 28HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partner
63、s : ArialSlide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : ArialTop right corner for field-mark, customer or partner logotypes. - The following nine groups of colors are an example of how our design colors can be u
64、sed, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.WASN9770lN68-22业务机柜,尺寸2200*600*800mml机柜内设备:WASN机框(必配)配电盒(必配)LanSwitch(选配)防火墙(选配)l基于双平面组网时,LanSwitch和防火墙可以选配两套Page 29Thank youThank YouThank you此课件下载可自行编辑修改，供参考！此课件下载可自行编辑修改，供参考！感谢你的支持，我们会努力做得更好！感谢你的支持，我们会努力做得更好！
