1、園區(qū)組播網(wǎng)絡(luò)架構(gòu)設(shè)計(jì)指南技術(shù)創(chuàng)新，變革未來SpineLeafLeafLeafLeafLeafLeafUnderlayVTEPVTEPVTEPVTEPVTEPVTEPOverlay組播分發(fā)樹組播分發(fā)樹Overlay組播與Underlay示意圖PIM ZoneAWANPIM ZoneBSpineLeaf2Leaf3Source2ReceiverLeaf1&RPLeaf11Leaf10&RPPIMPIMIGMPMVPNPIMMSDPPIMMSDPMVPNSource1VxLAN NetworkPIMMVPNPIMOverlay組播關(guān)鍵技術(shù)應(yīng)用位置一覽IGMP查詢器HostA(Group1)HostB

2、(Group2)HostC(Group3)普通組查詢組報(bào)告報(bào)文IGMPv1示意圖IGMP查詢器HostAHostBIGMP離開報(bào)文特定組查詢報(bào)文IGMP報(bào)告報(bào)文123IGMPv2示意圖HostA(S2，G)組播報(bào)文(S1，G)組播報(bào)文(S1，G)報(bào)告報(bào)文組播流量Source1Source2IGMPv3示意圖HostA(S2，G2)組播報(bào)文(S1，G1)組播報(bào)文(*，G1)報(bào)告報(bào)文組播流量Source1Source2G1映射到S1IGMP SSM Mapping示意圖HostASource1RP組播流量PIM Register報(bào)文IGMP Join報(bào)文PIM Join報(bào)文靜態(tài)RP、組播成員RPT

3、構(gòu)建和組播源注冊(cè)示意圖組播流量HostAPIM Register報(bào)文PIM Join報(bào)文1Source1RPPIM Join報(bào)文2IGMP Join報(bào)文PIM Prune報(bào)文組成員DR觸發(fā)SPT切換示意圖組播流量HostAPIM Asser報(bào)文1PIM Asser報(bào)文2Source1斷言機(jī)制示意圖組播流量HostASource1PIM Join報(bào)文1IGMP Join報(bào)文HostBPIM Join報(bào)文2PIM-SM（SSM模型）示意圖SpineLeaf2Leaf3SourceHost2Leaf1VxLAN NetworkHost1公網(wǎng)MVPN鄰居I-PMSI隧道組播數(shù)據(jù)IGMP ReportC

4、loudFabric解決方案中的NG MVPN網(wǎng)絡(luò)模型SpineLeaf2RPSourceLeaf1Host1公網(wǎng)MVPN鄰居組播數(shù)據(jù)IGMP reportb生成組播表項(xiàng)c發(fā)送組播數(shù)據(jù)d生成組播表項(xiàng)f將組播表項(xiàng)轉(zhuǎn)化為MVPN 7類路由組播成員加入ae傳遞MVPN 5類路由g傳遞MVPN 7類路由h處理MVPN 7類路由將I-PMSI隧道添加到下游出口PIM SM模型，(*,G)不跨越公網(wǎng)方式過程示意圖SpineLeaf2SourceLeaf1Host1公網(wǎng)MVPN鄰居組播數(shù)據(jù)IGMP reportb生成組播表項(xiàng)生成MVPN 6類路由e發(fā)送組播數(shù)據(jù)d組播成員加入ag傳遞MVPN 5類路由h生成組

5、播表項(xiàng)生成MVPN 7類路由Leaf3RPc傳遞MVPN 6類路由生成組播(*，G)表項(xiàng)f傳遞MVPN 5類路由i傳遞MVPN 7類路由kSPT切換發(fā)送(S，G)剪枝處理MVPN 7類路由將I-PMSI隧道添加到下游出口l發(fā)送(S，G)剪枝jPIM SM模型，(*,G)跨越公網(wǎng)方式過程示意圖SpineLeaf2SourceLeaf1Host1公網(wǎng)MVPN鄰居組播數(shù)據(jù)IGMP reporta組播源上線b記錄SAEC和VRIECc收到點(diǎn)播信息d構(gòu)造7類路由C-Multicaste傳遞7類路由f轉(zhuǎn)換7類路由，生成組播表項(xiàng)PIM SSM模型示意圖PIM-SM Zone1RP1PIM-SM Zone2R

6、P2MSDPMSDP對(duì)等體建立PIM-SM Zone2RP2MSDPPIM-SM Zone1RP1Source1Host1域間組播源信息傳遞SpineHost2Host3Host1VxLAN NetworkVTEP2VTEP3BUM流量VTEP1VXLAN頭端復(fù)制示意圖SpineHost2Host3Host1VxLAN NetworkVTEP2VTEP3BUM流量VTEP1VXLAN組播復(fù)制示意圖SpineSpineSource1Host1Host2Source3Host3Source2ServerLeaf4ServerLeaf3ServerLeaf2ServerLeaf1BorderLeaf

7、1BorderLeaf2PIM ZONE1PIM ZONE2CloudFabric Overlay組播場(chǎng)景概覽SpineSource1Host1ServerLeaf2ServerLeaf1BorderLeaf1underlay RPVxLAN NetworkRPRP組播源和組播成員均在Fabric內(nèi)部Source1Host1SpineUnderlay RPServerLeaf1Overlay RPServerLeaf2Overlay RP基于ARP生成主機(jī)路由，引入BGP EVPNLeaf1將主機(jī)路由發(fā)布到BGP EVPN，同時(shí)攜帶SASEC/VRIEC匹配import RT記錄SASEC/V

8、RIEC生成(S,G)組播路由上游接口為與Source1下游接口為Null向鄰居發(fā)送MVPN 5類路由消息，攜帶(C-S,C-G)表項(xiàng)生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口為NULL發(fā)送IGMP Report報(bào)文生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口Host1查找組播源的單播路由(RPF檢查)，發(fā)送MVPN 7類路由攜帶SASEC/VRIEC生成(C-S,C-G)組播路由上游接口為Source1下游接口為I-PMSI注入組播流量組播流量通過I-PMSI隧道轉(zhuǎn)發(fā)到ServerLeaf2組播流量轉(zhuǎn)發(fā)組播源上線NVE配置了mcast-group G1逐跳向

9、ServerLeaf1發(fā)送PIM Join(NVE2,G1)發(fā)送BGP-EVPN Type3NVE配置了mcast-group G1逐跳向ServerLeaf2發(fā)送PIM Join(NVE1,G1)注入組播流量組播源比組播成員先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程Source1Host1SpineUnderlay RPServerLeaf1Overlay RPServerLeaf2Overlay RP生成(C-*,C-G)組播路由上游接口為Null下游接口為Host1基于ARP生成主機(jī)路由，引入BGP EVPNLeaf1將主機(jī)路由發(fā)布到BGP EVPN，同時(shí)攜帶SASEC/VRIEC匹配import RT

10、記錄SASEC/VRIEC生成(S,G)組播路由上游接口為與Source1下游接口為Null利用MVPN 5類路由，向鄰居發(fā)送SA消息，攜帶(C-S,C-G)表項(xiàng)生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口為Host1查找組播源的單播路由(RPF檢查)，發(fā)送MVPN 7類路由攜帶SASEC/VRIEC注入組播流量組播流量通過I-PMSI隧道轉(zhuǎn)發(fā)到組成員DR組播流量轉(zhuǎn)發(fā)生成(C-S,C-G)組播路由上游接口為Source1下游接口為I-PMSINVE配置了mcast-group G1逐跳向ServerLeaf1發(fā)送PIM Join(NVE2,G1)發(fā)送BGP-EVPN Type3

11、NVE配置了mcast-group G1逐跳向ServerLeaf2發(fā)送PIM Join(NVE1,G1)組播源上線，請(qǐng)求網(wǎng)關(guān)ARP注入組播流量發(fā)送IGMP Report報(bào)文組播成員比組播源先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程SpineHost2Source2ServerLeafBorderLeafUnderlay RPPIM ZONE1VxLANPIM ZONE2MSDPMSDPRPR1R2組播源在Fabric外部，組播成員在Fabric內(nèi)部示意圖Source2ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&Overlay RPSpineUnderlay R

12、PHost2封裝PIM Register報(bào)文向RP角色發(fā)送生成(S,G)組播路由上游接口為Source2下游接口為Null生成(S,G)組播路由上游接口為R2下游接口為Null向MSDP對(duì)等體傳遞(S,G)組播表項(xiàng)生成(C-S,C-G)組播路由上游接口為R1下游接口為NULL利用MVPN 5類路由，向鄰居發(fā)送SA消息，攜帶(C-S,C-G)表項(xiàng)生成(C-S,C-G)組播路由上游接口為與I-PMSI下游接口為與Null發(fā)送IGMP Report報(bào)文生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口為Host注入組播流量通過組播路由逐跳轉(zhuǎn)發(fā)組播流量組播流量通過I-PMSI隧道轉(zhuǎn)發(fā)到組成員

13、DR組播流量轉(zhuǎn)發(fā)生成(C-S,C-G)組播路由上游接口為R1下游接口為I-PMSI生成(S,G)組播路由上游接口為R2下游接口為R1生成(S,G)組播路由上游接口為Source2下游接口為R2查找組播源的單播路由(RPF檢查)發(fā)送MVPN 7類路由攜帶SASEC/VRIEC查詢組播源路由，向組播源逐眺發(fā)送PIM Join(C-S,C-G)注入組播流量組播源比組播成員先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程Source2ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&RPSpineUnderlay RPHost2發(fā)送IGMP Report報(bào)文將與Host互聯(lián)口作為(

14、C-*,C-G)下游接口生成(S,G)組播路由封裝PIM Register報(bào)文向RP角色發(fā)送生成(S,G)組播路由上游接口為R2下游接口為NULL向MSDP對(duì)等體傳遞(S,G)組播表項(xiàng)生成(C-S,C-G)組播路由上游接口為R1下游接口為Null生成(C-S,C-G)組播路由下游接口為與Host2上游接口為與I-PMSI注入組播流量通過PIM路由逐跳轉(zhuǎn)發(fā)組播流量組播流量轉(zhuǎn)發(fā)查找組播源的單播路由(RPF檢查)發(fā)送MVPN 7類路由攜帶SASEC/VRIEC查詢組播源路由，向組播源逐眺發(fā)送PIM Join(S,G)生成(C-S,C-G)組播路由上游接口為R1下游接口為I-PMSI生成(S,G)組播

15、路由上游接口為R2下游接口為R1生成(S,G)組播路由上游接口為Source2下游接口為R2注入組播流量組播流量通過I-PMSI隧道轉(zhuǎn)發(fā)到組成員DR利用MVPN 5類路由，向鄰居發(fā)送SA消息，攜帶(C-S,C-G)表項(xiàng)組播成員比組播源先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程SpineSource3Host3ServerLeafBorderLeafUnderlay RPPIM ZONE1VxLANPIM ZONE2MSDPMSDPRPR1R2組播源在Fabric內(nèi)部，組播成員在Fabric外部示意圖Source3ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&Ove

16、rlay RPSpineUnderlay RPHost3基于ARP生成主機(jī)路由引入BGP EVPNLeaf1將主機(jī)路由發(fā)布到BGP EVPN，同時(shí)攜帶SASEC/VRIEC匹配import RT記錄SASEC/VRIEC生成(C-S,C-G)組播路由上游接口為與Source3下游接口為Null注入組播流量組播源上線向鄰居發(fā)送MVPN 5類路由消息，攜帶(C-S,C-G)表項(xiàng)生成(S,G)組播路由上游接口為I-PMSI下游接口為Null發(fā)送IGMP Report報(bào)文生成(*,G)組播路由下游接口Host3上游接口R1向RP發(fā)送PIM Join(*,G)生成(S,G)組播路由上游接口為Border

17、Leaf下游接口R2向MSDP對(duì)等體傳遞(S,G)表項(xiàng)生成(S,G)組播路由上游接口為BorderLeaf下游接口為Null向Source3發(fā)送PIM Join(S,G)生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口R1生成(C-S,C-G)組播路由上游接口為Source3下游接口I-PMSI注入組播流量觸發(fā)SPT切換查詢組播源路由，向組播源逐眺發(fā)送PIM Join(S,G)查找組播源的單播路由(RPF檢查)發(fā)送MVPN 7類路由攜帶SASEC/VRIEC組播源比組播成員先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程Source3ServerLeafOverlay RPR1MSDP&RPR2Bord

18、erLeafMSDP&Overlay RPSpineUnderlay RPHost3發(fā)送IGMP Report報(bào)文生成(*,G)組播路由上游接口R1下游接口Host3生成(*,G)組播路由上游接口為Null下游接口R2向RP發(fā)送PIM Join(*,G)基于ARP生成主機(jī)路由引入BGP EVPNLeaf1將主機(jī)路由發(fā)布到BGP EVPN，同時(shí)攜帶SASEC/VRIEC匹配import RT記錄SASEC/VRIEC生成(C-S,C-G)組播路由上游接口為與Source3下游接口為Null注入組播流量向鄰居發(fā)送MVPN 5類路由消息，攜帶(C-S,C-G)表項(xiàng)生成(C-S,C-G)組播路由上游接

19、口為I-PMSI下游接口為Null組播源上線向MSDP對(duì)等體傳遞(S,G)表項(xiàng)生成(S,G)組播路由上游接口為BorderLeaf下游接口為R2向Source3發(fā)送PIM Join(S,G)生成(C-S,C-G)組播路由上游接口為I-PMSI下游接口R1生成(C-S,C-G)組播路由上游接口為Source3下游接口I-PMSI注入組播流量觸發(fā)SPT切換查詢組播源路由，向組播源逐眺發(fā)送PIM Join(S,G)查找組播源的單播路由(RPF檢查)發(fā)送MVPN 7類路由攜帶SASEC/VRIEC組播成員比組播源先接入網(wǎng)絡(luò)場(chǎng)景下的工作過程Spine1RPSpine2RPHost1Host2Source

20、ServerLeaf3ServerLeaf2ServerLeaf1PIM ZONE Spine設(shè)備扮演RP角色FabricPIM-ZoneABorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2TCPSYNTCPSYN-ACKPESourceMSDP對(duì)等體之間TCP無法建立連接示意圖PIM-ZoneAFabricBorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2IP3MSDP對(duì)等體SourcePER2與BorderLeaf設(shè)備組之間建立MSDP對(duì)等體PIM-ZoneASourceFabricBorderLeaf1-1IP1Bord

21、erLeaf1-2IP1peerlinkR2IP3PE組播流量M-LAG主設(shè)備轉(zhuǎn)發(fā)組播業(yè)務(wù)流量PIM-ZoneASourceFabricBorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2IP3組播加線PE組播流量M-LAG上行鏈路故障時(shí)組播流量切換示意圖HostServerLeaf1-1peerlinkIGMP Report(*,G)(*,G)ServerLeaf1-2組播成員發(fā)送IGMP Report報(bào)文在M-LAG設(shè)備組之間同步Hostpeerlink(*,G)(*,G)ServerLeaf1-2網(wǎng)絡(luò)側(cè)組播流量ServerLeaf1-1網(wǎng)絡(luò)側(cè)組播流量M-L

22、AG設(shè)備組接收到網(wǎng)絡(luò)側(cè)組播流量Hostpeerlink(*,G)(*,G)ServerLeaf1-2網(wǎng)絡(luò)側(cè)組播流量ServerLeaf1-1網(wǎng)絡(luò)側(cè)組播流量M-LAG接入側(cè)單鏈路故障場(chǎng)景HostServerLeaf1-1peerlinkIGMP Report(*,G)ServerLeaf1-2組播成員單歸接入M-LAG設(shè)備組Hostpeerlink(*,G)ServerLeaf1-2網(wǎng)絡(luò)側(cè)組播流量ServerLeaf1-1網(wǎng)絡(luò)側(cè)組播流量組播成員接收網(wǎng)絡(luò)側(cè)組播流量Hostpeerlink(*,G)ServerLeaf1-2網(wǎng)絡(luò)側(cè)組播流量ServerLeaf1-1網(wǎng)絡(luò)側(cè)組播流量單歸鏈路故障場(chǎng)景Sou

23、rceServerLeaf2-1peerlinkServerLeaf2-2NG MVPN Type7ServerLeaf1-1peerlinkServerLeaf1-2HostIGMP Report組播成員向成員DR點(diǎn)播組播組SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host組播源通過一臺(tái)ServerLeaf轉(zhuǎn)發(fā)組播流量SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host組播源通過另一臺(tái)

24、ServerLeaf轉(zhuǎn)發(fā)組播流量SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2HostServerLeaf2-1與組播源Source之間鏈路故障SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host組播源接入的一臺(tái)設(shè)備故障SourceServerLeaf2-1peerlinkServerLeaf2-2NG MVPN Type7ServerLeaf1-1peerlinkServerLeaf1-2

25、HostIGMP Report組播源單歸接入M-LAG設(shè)備組ServerLeaf2-1peerlinkServerLeaf2-2SourceServerLeaf1-1peerlinkServerLeaf1-2HostServerLeaf無故障場(chǎng)景ServerLeaf2-1peerlinkServerLeaf2-2Source組播源單歸鏈路故障ServerLeaf2-1peerlinkServerLeaf2-2SourceServerLeaf1-1peerlinkServerLeaf1-2Host組播源ServerLeaf上行鏈路故障場(chǎng)景Convergence LayerPIMIGMPOSPF/

26、BGPAccess LayerCore LayerSourceHost1Host2Host3PIMOSPF/BGPMSDPOSPF/BGP傳統(tǒng)三層架構(gòu)PIMIGMPOSPF/BGPPIMIGMPOSPF/BGPPIMOSPF/BGP傳統(tǒng)三層架構(gòu)示意圖SpinePIMIGMPOSPF/BGPNGMVPNEVPNServerLeafBorderLeafSourceHost1Host2Host3PIMOSPF/BGPMSDPOSPF/BGPNGMVPNEVPNSpine-Leaf架構(gòu)PIMOSPF/BGPNGMVPNEVPNPIMIGMPOSPF/BGPNGMVPNEVPNPIMIGMPOSPF/B

27、GPNGMVPNEVPNHostSourceIGMP ReportPIM JoinPIM Join傳統(tǒng)Underlay組播HostSourceIGMP ReportMVPN Type 7Overlay組播HostSource(S,G1)(S,G2)(S,G3)Underlay組播表項(xiàng)HostSource(S,G)(S,G1)(S,G2)(S,G3)Overlay組播表項(xiàng)SourceHost1Host2Leaf1Leaf2Underlay組播中不同VRF流量SpineLeafLeafLeafLeafLeafLeafUnderlayVTEPVTEPVTEPVTEPVTEPVTEPOverlay組播

28、分發(fā)樹組播分發(fā)樹Overlay組播和單播都統(tǒng)一在Overlay層面轉(zhuǎn)發(fā)Spine1BorderLeafSource1Host2ServerLeaf2ServerLeaf1Source2Host1Old-ZoneHuawei-ZoneAccess1Access2Aggregation1 Aggregation2本頁暫不發(fā)布，請(qǐng)忽略Source1ServerLeafOverlay RPAggregation1Access1BorderLeafMSDP&Overlay RPSpineUnderlay RPHost1發(fā)送IGMP Report報(bào)文生成(*,G)組播路由上游接口Aggregation1下游接口Host3生成(*,G)組播路由上游接口為BorderLeaf下游接口Access1向RP發(fā)送PIM Join(*,G)Leaf1將主機(jī)路由發(fā)布到BGP EVPN，同時(shí)攜帶SASEC/VRIEC匹配import RT記錄SASEC/VRIEC生成(C-S,C-G)組播路由上游接口為與Source3下游接口為Null注入組播流量向鄰居發(fā)