园区组播网络架构设计指南

1、园区组播网络架构设计指南技术创新，变革未来SpineLeafLeafLeafLeafLeafLeafUnderlayVTEPVTEPVTEPVTEPVTEPVTEPOverlay组播分发树组播分发树Overlay组播与Underlay示意图PIM ZoneAWANPIM ZoneBSpineLeaf2Leaf3Source2ReceiverLeaf1&RPLeaf11Leaf10&RPPIMPIMIGMPMVPNPIMMSDPPIMMSDPMVPNSource1VxLAN NetworkPIMMVPNPIMOverlay组播关键技术应用位置一览IGMP查询器HostA(Group1)HostB

2、(Group2)HostC(Group3)普通组查询组报告报文IGMPv1示意图IGMP查询器HostAHostBIGMP离开报文特定组查询报文IGMP报告报文123IGMPv2示意图HostA(S2，G)组播报文(S1，G)组播报文(S1，G)报告报文组播流量Source1Source2IGMPv3示意图HostA(S2，G2)组播报文(S1，G1)组播报文(*，G1)报告报文组播流量Source1Source2G1映射到S1IGMP SSM Mapping示意图HostASource1RP组播流量PIM Register报文IGMP Join报文PIM Join报文静态RP、组播成员RPT

3、构建和组播源注册示意图组播流量HostAPIM Register报文PIM Join报文1Source1RPPIM Join报文2IGMP Join报文PIM Prune报文组成员DR触发SPT切换示意图组播流量HostAPIM Asser报文1PIM Asser报文2Source1断言机制示意图组播流量HostASource1PIM Join报文1IGMP Join报文HostBPIM Join报文2PIM-SM（SSM模型）示意图SpineLeaf2Leaf3SourceHost2Leaf1VxLAN NetworkHost1公网MVPN邻居I-PMSI隧道组播数据IGMP ReportC

4、loudFabric解决方案中的NG MVPN网络模型SpineLeaf2RPSourceLeaf1Host1公网MVPN邻居组播数据IGMP reportb生成组播表项c发送组播数据d生成组播表项f将组播表项转化为MVPN 7类路由组播成员加入ae传递MVPN 5类路由g传递MVPN 7类路由h处理MVPN 7类路由将I-PMSI隧道添加到下游出口PIM SM模型，(*,G)不跨越公网方式过程示意图SpineLeaf2SourceLeaf1Host1公网MVPN邻居组播数据IGMP reportb生成组播表项生成MVPN 6类路由e发送组播数据d组播成员加入ag传递MVPN 5类路由h生成组

5、播表项生成MVPN 7类路由Leaf3RPc传递MVPN 6类路由生成组播(*，G)表项f传递MVPN 5类路由i传递MVPN 7类路由kSPT切换发送(S，G)剪枝处理MVPN 7类路由将I-PMSI隧道添加到下游出口l发送(S，G)剪枝jPIM SM模型，(*,G)跨越公网方式过程示意图SpineLeaf2SourceLeaf1Host1公网MVPN邻居组播数据IGMP reporta组播源上线b记录SAEC和VRIECc收到点播信息d构造7类路由C-Multicaste传递7类路由f转换7类路由，生成组播表项PIM SSM模型示意图PIM-SM Zone1RP1PIM-SM Zone2R

6、P2MSDPMSDP对等体建立PIM-SM Zone2RP2MSDPPIM-SM Zone1RP1Source1Host1域间组播源信息传递SpineHost2Host3Host1VxLAN NetworkVTEP2VTEP3BUM流量VTEP1VXLAN头端复制示意图SpineHost2Host3Host1VxLAN NetworkVTEP2VTEP3BUM流量VTEP1VXLAN组播复制示意图SpineSpineSource1Host1Host2Source3Host3Source2ServerLeaf4ServerLeaf3ServerLeaf2ServerLeaf1BorderLeaf

7、1BorderLeaf2PIM ZONE1PIM ZONE2CloudFabric Overlay组播场景概览SpineSource1Host1ServerLeaf2ServerLeaf1BorderLeaf1underlay RPVxLAN NetworkRPRP组播源和组播成员均在Fabric内部Source1Host1SpineUnderlay RPServerLeaf1Overlay RPServerLeaf2Overlay RP基于ARP生成主机路由，引入BGP EVPNLeaf1将主机路由发布到BGP EVPN，同时携带SASEC/VRIEC匹配import RT记录SASEC/V

8、RIEC生成(S,G)组播路由上游接口为与Source1下游接口为Null向邻居发送MVPN 5类路由消息，携带(C-S,C-G)表项生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口为NULL发送IGMP Report报文生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口Host1查找组播源的单播路由(RPF检查)，发送MVPN 7类路由携带SASEC/VRIEC生成(C-S,C-G)组播路由上游接口为Source1下游接口为I-PMSI注入组播流量组播流量通过I-PMSI隧道转发到ServerLeaf2组播流量转发组播源上线NVE配置了mcast-group G1逐跳向

9、ServerLeaf1发送PIM Join(NVE2,G1)发送BGP-EVPN Type3NVE配置了mcast-group G1逐跳向ServerLeaf2发送PIM Join(NVE1,G1)注入组播流量组播源比组播成员先接入网络场景下的工作过程Source1Host1SpineUnderlay RPServerLeaf1Overlay RPServerLeaf2Overlay RP生成(C-*,C-G)组播路由上游接口为Null下游接口为Host1基于ARP生成主机路由，引入BGP EVPNLeaf1将主机路由发布到BGP EVPN，同时携带SASEC/VRIEC匹配import RT

10、记录SASEC/VRIEC生成(S,G)组播路由上游接口为与Source1下游接口为Null利用MVPN 5类路由，向邻居发送SA消息，携带(C-S,C-G)表项生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口为Host1查找组播源的单播路由(RPF检查)，发送MVPN 7类路由携带SASEC/VRIEC注入组播流量组播流量通过I-PMSI隧道转发到组成员DR组播流量转发生成(C-S,C-G)组播路由上游接口为Source1下游接口为I-PMSINVE配置了mcast-group G1逐跳向ServerLeaf1发送PIM Join(NVE2,G1)发送BGP-EVPN Type3

11、NVE配置了mcast-group G1逐跳向ServerLeaf2发送PIM Join(NVE1,G1)组播源上线，请求网关ARP注入组播流量发送IGMP Report报文组播成员比组播源先接入网络场景下的工作过程SpineHost2Source2ServerLeafBorderLeafUnderlay RPPIM ZONE1VxLANPIM ZONE2MSDPMSDPRPR1R2组播源在Fabric外部，组播成员在Fabric内部示意图Source2ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&Overlay RPSpineUnderlay R

12、PHost2封装PIM Register报文向RP角色发送生成(S,G)组播路由上游接口为Source2下游接口为Null生成(S,G)组播路由上游接口为R2下游接口为Null向MSDP对等体传递(S,G)组播表项生成(C-S,C-G)组播路由上游接口为R1下游接口为NULL利用MVPN 5类路由，向邻居发送SA消息，携带(C-S,C-G)表项生成(C-S,C-G)组播路由上游接口为与I-PMSI下游接口为与Null发送IGMP Report报文生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口为Host注入组播流量通过组播路由逐跳转发组播流量组播流量通过I-PMSI隧道转发到组成员

13、DR组播流量转发生成(C-S,C-G)组播路由上游接口为R1下游接口为I-PMSI生成(S,G)组播路由上游接口为R2下游接口为R1生成(S,G)组播路由上游接口为Source2下游接口为R2查找组播源的单播路由(RPF检查)发送MVPN 7类路由携带SASEC/VRIEC查询组播源路由，向组播源逐眺发送PIM Join(C-S,C-G)注入组播流量组播源比组播成员先接入网络场景下的工作过程Source2ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&RPSpineUnderlay RPHost2发送IGMP Report报文将与Host互联口作为(

14、C-*,C-G)下游接口生成(S,G)组播路由封装PIM Register报文向RP角色发送生成(S,G)组播路由上游接口为R2下游接口为NULL向MSDP对等体传递(S,G)组播表项生成(C-S,C-G)组播路由上游接口为R1下游接口为Null生成(C-S,C-G)组播路由下游接口为与Host2上游接口为与I-PMSI注入组播流量通过PIM路由逐跳转发组播流量组播流量转发查找组播源的单播路由(RPF检查)发送MVPN 7类路由携带SASEC/VRIEC查询组播源路由，向组播源逐眺发送PIM Join(S,G)生成(C-S,C-G)组播路由上游接口为R1下游接口为I-PMSI生成(S,G)组播

15、路由上游接口为R2下游接口为R1生成(S,G)组播路由上游接口为Source2下游接口为R2注入组播流量组播流量通过I-PMSI隧道转发到组成员DR利用MVPN 5类路由，向邻居发送SA消息，携带(C-S,C-G)表项组播成员比组播源先接入网络场景下的工作过程SpineSource3Host3ServerLeafBorderLeafUnderlay RPPIM ZONE1VxLANPIM ZONE2MSDPMSDPRPR1R2组播源在Fabric内部，组播成员在Fabric外部示意图Source3ServerLeafOverlay RPR1MSDP&RPR2BorderLeafMSDP&Ove

16、rlay RPSpineUnderlay RPHost3基于ARP生成主机路由引入BGP EVPNLeaf1将主机路由发布到BGP EVPN，同时携带SASEC/VRIEC匹配import RT记录SASEC/VRIEC生成(C-S,C-G)组播路由上游接口为与Source3下游接口为Null注入组播流量组播源上线向邻居发送MVPN 5类路由消息，携带(C-S,C-G)表项生成(S,G)组播路由上游接口为I-PMSI下游接口为Null发送IGMP Report报文生成(*,G)组播路由下游接口Host3上游接口R1向RP发送PIM Join(*,G)生成(S,G)组播路由上游接口为Border

17、Leaf下游接口R2向MSDP对等体传递(S,G)表项生成(S,G)组播路由上游接口为BorderLeaf下游接口为Null向Source3发送PIM Join(S,G)生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口R1生成(C-S,C-G)组播路由上游接口为Source3下游接口I-PMSI注入组播流量触发SPT切换查询组播源路由，向组播源逐眺发送PIM Join(S,G)查找组播源的单播路由(RPF检查)发送MVPN 7类路由携带SASEC/VRIEC组播源比组播成员先接入网络场景下的工作过程Source3ServerLeafOverlay RPR1MSDP&RPR2Bord

18、erLeafMSDP&Overlay RPSpineUnderlay RPHost3发送IGMP Report报文生成(*,G)组播路由上游接口R1下游接口Host3生成(*,G)组播路由上游接口为Null下游接口R2向RP发送PIM Join(*,G)基于ARP生成主机路由引入BGP EVPNLeaf1将主机路由发布到BGP EVPN，同时携带SASEC/VRIEC匹配import RT记录SASEC/VRIEC生成(C-S,C-G)组播路由上游接口为与Source3下游接口为Null注入组播流量向邻居发送MVPN 5类路由消息，携带(C-S,C-G)表项生成(C-S,C-G)组播路由上游接

19、口为I-PMSI下游接口为Null组播源上线向MSDP对等体传递(S,G)表项生成(S,G)组播路由上游接口为BorderLeaf下游接口为R2向Source3发送PIM Join(S,G)生成(C-S,C-G)组播路由上游接口为I-PMSI下游接口R1生成(C-S,C-G)组播路由上游接口为Source3下游接口I-PMSI注入组播流量触发SPT切换查询组播源路由，向组播源逐眺发送PIM Join(S,G)查找组播源的单播路由(RPF检查)发送MVPN 7类路由携带SASEC/VRIEC组播成员比组播源先接入网络场景下的工作过程Spine1RPSpine2RPHost1Host2Source

20、ServerLeaf3ServerLeaf2ServerLeaf1PIM ZONE Spine设备扮演RP角色FabricPIM-ZoneABorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2TCPSYNTCPSYN-ACKPESourceMSDP对等体之间TCP无法建立连接示意图PIM-ZoneAFabricBorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2IP3MSDP对等体SourcePER2与BorderLeaf设备组之间建立MSDP对等体PIM-ZoneASourceFabricBorderLeaf1-1IP1Bord

21、erLeaf1-2IP1peerlinkR2IP3PE组播流量M-LAG主设备转发组播业务流量PIM-ZoneASourceFabricBorderLeaf1-1IP1BorderLeaf1-2IP1peerlinkR2IP3组播加线PE组播流量M-LAG上行链路故障时组播流量切换示意图HostServerLeaf1-1peerlinkIGMP Report(*,G)(*,G)ServerLeaf1-2组播成员发送IGMP Report报文在M-LAG设备组之间同步Hostpeerlink(*,G)(*,G)ServerLeaf1-2网络侧组播流量ServerLeaf1-1网络侧组播流量M-L

22、AG设备组接收到网络侧组播流量Hostpeerlink(*,G)(*,G)ServerLeaf1-2网络侧组播流量ServerLeaf1-1网络侧组播流量M-LAG接入侧单链路故障场景HostServerLeaf1-1peerlinkIGMP Report(*,G)ServerLeaf1-2组播成员单归接入M-LAG设备组Hostpeerlink(*,G)ServerLeaf1-2网络侧组播流量ServerLeaf1-1网络侧组播流量组播成员接收网络侧组播流量Hostpeerlink(*,G)ServerLeaf1-2网络侧组播流量ServerLeaf1-1网络侧组播流量单归链路故障场景Sou

23、rceServerLeaf2-1peerlinkServerLeaf2-2NG MVPN Type7ServerLeaf1-1peerlinkServerLeaf1-2HostIGMP Report组播成员向成员DR点播组播组SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host组播源通过一台ServerLeaf转发组播流量SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host组播源通过另一台

24、ServerLeaf转发组播流量SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2HostServerLeaf2-1与组播源Source之间链路故障SourceServerLeaf2-1peerlinkServerLeaf2-2ServerLeaf1-1peerlinkServerLeaf1-2Host组播源接入的一台设备故障SourceServerLeaf2-1peerlinkServerLeaf2-2NG MVPN Type7ServerLeaf1-1peerlinkServerLeaf1-2

25、HostIGMP Report组播源单归接入M-LAG设备组ServerLeaf2-1peerlinkServerLeaf2-2SourceServerLeaf1-1peerlinkServerLeaf1-2HostServerLeaf无故障场景ServerLeaf2-1peerlinkServerLeaf2-2Source组播源单归链路故障ServerLeaf2-1peerlinkServerLeaf2-2SourceServerLeaf1-1peerlinkServerLeaf1-2Host组播源ServerLeaf上行链路故障场景Convergence LayerPIMIGMPOSPF/

26、BGPAccess LayerCore LayerSourceHost1Host2Host3PIMOSPF/BGPMSDPOSPF/BGP传统三层架构PIMIGMPOSPF/BGPPIMIGMPOSPF/BGPPIMOSPF/BGP传统三层架构示意图SpinePIMIGMPOSPF/BGPNGMVPNEVPNServerLeafBorderLeafSourceHost1Host2Host3PIMOSPF/BGPMSDPOSPF/BGPNGMVPNEVPNSpine-Leaf架构PIMOSPF/BGPNGMVPNEVPNPIMIGMPOSPF/BGPNGMVPNEVPNPIMIGMPOSPF/B

27、GPNGMVPNEVPNHostSourceIGMP ReportPIM JoinPIM Join传统Underlay组播HostSourceIGMP ReportMVPN Type 7Overlay组播HostSource(S,G1)(S,G2)(S,G3)Underlay组播表项HostSource(S,G)(S,G1)(S,G2)(S,G3)Overlay组播表项SourceHost1Host2Leaf1Leaf2Underlay组播中不同VRF流量SpineLeafLeafLeafLeafLeafLeafUnderlayVTEPVTEPVTEPVTEPVTEPVTEPOverlay组播

28、分发树组播分发树Overlay组播和单播都统一在Overlay层面转发Spine1BorderLeafSource1Host2ServerLeaf2ServerLeaf1Source2Host1Old-ZoneHuawei-ZoneAccess1Access2Aggregation1 Aggregation2本页暂不发布，请忽略Source1ServerLeafOverlay RPAggregation1Access1BorderLeafMSDP&Overlay RPSpineUnderlay RPHost1发送IGMP Report报文生成(*,G)组播路由上游接口Aggregation1下游接口Host3生成(*,G)组播路由上游接口为BorderLeaf下游接口Access1向RP发送PIM Join(*,G)Leaf1将主机路由发布到BGP EVPN，同时携带SASEC/VRIEC匹配import RT记录SASEC/VRIEC生成(C-S,C-G)组播路由上游接口为与Source3下游接口为Null注入组播流量向邻居发