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【正文】 reserved. 18基于 CRNET全國(guó)范圍的 MPLS VPN業(yè)務(wù)CRNET 寬帶數(shù)據(jù)網(wǎng)鐵道部 北京VPN北京總部鐵道部 上海VPN上海分部吉林分部武漢分部廣州分部鐵道部 成都VPNPresentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 24Classical Inter Access AddressingThe Customer can use private address space.The firewall provides Network Address Translation (NAT) between the private address space and the small portion of public address space assigned to the customer.Private addresses Public addressesPresentation_ID 169。 full Inter routing cannot be implemented because of scalability problems.Presentation_ID 169。IP寬帶網(wǎng)絡(luò)平臺(tái)寬帶網(wǎng)絡(luò)平臺(tái)MPLS VPN 企業(yè)外聯(lián)網(wǎng)－外部網(wǎng)互連Presentation_ID 169。電話(huà)業(yè)務(wù)。 2023, Cisco Systems, Inc. All rights reserved. 47 Any Transport over MPLS (AToM)? Provides ability to transport layer 2 traffic across MPLS packetbased core works, extending the richness of MPLS capabilities to L2 VPNs? A scalable architecture that supports the multiplexing of subscriber connections? A standards based (draftmartini) open architecture allows extensibility to many transport types? Designed for AnytoAny connectivity? SP does not participate in customer routingMPLS CoreAToMFrame RelayATMLeased LineEtherFrame RelayATMLeased LineEther? Allows SPs to bine with Cisco IOS QoS and MPLS Traffic Engineering to provide “Virtual leased line” like servicesPresentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 54IETF 標(biāo)準(zhǔn)化? L2TPv3 is currently an IETF standards track draft document. See ? L2TPv3 has been presented at the IETF meetings in London (August 2023) and Salt Lake City (December 2023). It was warmly received at both venues.? We are continuing the standards push at the IETF meeting in Minneapolis, MN (March 2023)? We anticipate standards ratification by Q1 of 2023.Presentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 50L2TP 協(xié)議參考模型L2TPv2L2TPv3IP or MPLSCoreL2TPv3 TunnelsCECEPE1 PE2CECEProvider EdgeSP IP CoreProvider EdgeIP or MPLSCoreL2TPv2 TunnelsLNS ISP 1LACDial UserDSL UserLNS ISP 2Ether EtherFrame RelayFrame RelaySP IP CorePresentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 43鐵通鐵通 城域城域 網(wǎng)網(wǎng)企業(yè)具體業(yè)務(wù)分析城城 域域 寬帶寬帶IP網(wǎng)絡(luò)網(wǎng)絡(luò) 平臺(tái)平臺(tái)以太網(wǎng)交換機(jī)以太網(wǎng)交換機(jī)互聯(lián)網(wǎng)互聯(lián)網(wǎng)某企業(yè)分部某企業(yè)分部 /某大樓某大樓MPLS VPN連接本部和連接本部和分部分部電視會(huì)議電視會(huì)議企業(yè)企業(yè) AIP電話(huà)電話(huà)企業(yè)企業(yè) A分分 部部電視會(huì)議電視會(huì)議IP電話(huà)電話(huà)企業(yè)企業(yè) A總部總部MPLS VPN連接本部和連接本部和分部分部IDC數(shù)據(jù)中心數(shù)據(jù)中心主機(jī)托管主機(jī)托管二級(jí)運(yùn)營(yíng)商二級(jí)運(yùn)營(yíng)商 /內(nèi)容提供商內(nèi)容提供商網(wǎng)上教學(xué)網(wǎng)上教學(xué) /學(xué)習(xí)學(xué)習(xí)內(nèi)部信息共享內(nèi)部信息共享視頻點(diǎn)播視頻點(diǎn)播Presentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 37運(yùn)營(yíng)商之運(yùn)營(yíng)商CustomerISP 運(yùn)行 MPLSVPNCarrier BackbonePE1PE2CE1CE2IPE1IPE2Network = NIPDest=NIPDest=NIPDest=N 12 3 IPDest=N 12 2 IPDest=N 1 6 12 IPDest=N 1 12 IPDest=N 25 12 IPDest=N 7 12 IPDest=N 12 中竟網(wǎng) 沈陽(yáng) IGP中經(jīng)網(wǎng) 北京 IGPPresentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 31Packet Leaking in ActionPEPE InterSite1PEIGSite2Network Serial0VPNA VRF(global)Site1 routesSite2 routesGlobal Table and FIB...IP packetD=Label = 3 IP packetD=IP packetD=Presentation_ID 169。 customer sites are protected by a central firewall.Presentation_ID 169。 2023, Cisco Systems, Inc. All rights reserved. 22用戶(hù)端設(shè)備 用戶(hù)端設(shè)備A用戶(hù) 1 A用戶(hù) 2?? 使用原有私有地址使用原有私有地址?? 寬帶互連－寬帶互連－ 10/100M以太網(wǎng)，低成本，高帶寬以太網(wǎng)，低成本，高帶寬MPLS VPN 企業(yè)內(nèi)聯(lián)網(wǎng)－用戶(hù)內(nèi)部網(wǎng)絡(luò)互連企業(yè)內(nèi)聯(lián)網(wǎng)－用戶(hù)內(nèi)部網(wǎng)絡(luò)互連增加虛擬專(zhuān)用網(wǎng) A的路由
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