二三層組播混跑場景 IGMP

1、二三層組播混跑場景 IGMP二三層組播混跑場景5.1.1組網(wǎng)需求交換機默認在進行三層組播轉(zhuǎn)發(fā)時，其出接口為Vlanif20三層接口，此時組播數(shù)據(jù)會在出VLAN 20內(nèi)廣播，不會精確轉(zhuǎn)發(fā)到具體點播的物理端口。同時入接口Vlanif10內(nèi)，如果也存在二層用戶有組播請求時，此時是無法進行二層組播轉(zhuǎn)發(fā)。因此為了實現(xiàn)三層組播在VLAN 20內(nèi)精確轉(zhuǎn)發(fā)，以及入VLAN 10實現(xiàn)二層轉(zhuǎn)發(fā)時，需要在對應(yīng)VLAN內(nèi)同時配置二層組播功能。5.1.2配置思路采用如下的思路配置二三層組播混跑業(yè)務(wù)的基本功能：1、將S9300全局使能組播路由功能。2、在S9300上行連接路由器設(shè)備的Vlanif10和下行出接口Vlani

2、f20使能PIM協(xié)議。3、在S9300下行出接口Vlanif20使能IGMP協(xié)議，在PIM視圖下配置靜態(tài)RP或者動態(tài)RP。4、將S9300全局使能IGMP-Snooping功能，Vlan10和Vlan20均使能IGMP-Snooping功能。5、如果S9300上采用SSM-Mapping或者靜態(tài)組播組的方式引流時，需要分別在二層VLAN和三層VLANIF上配置相同SSM-Mapping和SSM-Policy以及靜態(tài)組播組命令，防止二三層組播表項不一致，導(dǎo)致組播轉(zhuǎn)發(fā)不通。5.1.3配置過程配置交換機S9300# 全局使能組播路由和二層組播功能。S9300 multicast routing-en

3、ableS9300 igmp-snooping enable# 上行三層接口Vlanif10使能PIM協(xié)議。S9300 interface vlanif 10S9300-Vlanif10 pim-sm# 下行三層接口Vlanif20使能PIM協(xié)議和IGMP協(xié)議。S9300 interface vlanif 20S9300-Vlanif20 pim-smS9300-Vlanif20 igmp enable# 在Vlan10和Vlan20上使能二層組播。S9300 vlan 10S9300-vlan10 igmp-snooping enableS9300 vlan 20S9300-vlan20 i

4、gmp-snooping enable# 在Vlanif20和Vlan20上同時配置相同SSM-Mapping和SSM-Policy策略（可選）S9300 acl 2000S9300-acl-basic-2000 rule permit source 225.0.0.1 0.0.0.255S9300-acl-basic-2000 display this#acl number 2000rule 5 permit source 225.0.0.0 0.0.0.255#returnS9300 pimS9300-pim ssm-policy 2000S9300-pim display this#pi

5、mssm-policy 2000#returnS9300 igmpS9300-igmp ssm-mapping 225.0.0.1 32 1.1.1.1S9300-igmp display this#igmpssm-mapping 225.0.0.1 255.255.255.255 1.1.1.1#returnS9300 interface vlanif 20S9300-Vlanif20 igmp enableS9300-Vlanif20 igmp ssm-mapping enableS9300-Vlanif20 display this#interface Vlanif20ip addres

6、s 200.200.200.1 255.255.255.0pim smigmp enableigmp ssm-mapping enable#S9300-vlan20 igmp-snooping enableS9300-vlan20igmp-snooping version 3S9300-vlan20 igmp-snooping ssm-policy 2000S9300-vlan20 igmp-snooping ssm-mapping enableS9300-vlan20 igmp-snooping ssm-mapping 225.0.0.1 32 1.1.1.1S9300-vlan20 dis

7、play this#vlan 20igmp-snooping enableigmp-snooping ssm-mapping enableigmp-snooping version 3igmp-snooping ssm-policy 2000igmp-snooping ssm-mapping 225.0.0.1 255.255.255.255 1.1.1.1#return# 在Vlanif20和Vlan20上同時配置相同的靜態(tài)組播組命令。（可選）S9300 interface vlanif 20S9300-Vlanif20 igmp static-group 225.0.0.1S9300-Vl

8、anif20 display this#interface Vlanif20ip address 200.200.200.1 255.255.255.0igmp enableigmp static-group 225.0.0.1#S9300 interface GigabitEthernet 2/0/0S9300-GigabitEthernet2/0/0l2-multicast static-group group-address 225.0.0.1 vlan 20S9300-GigabitEthernet2/0/0 display this#interface GigabitEthernet

9、2/0/0port link-type trunkundo port trunk allow-pass vlan 1port trunk allow-pass vlan 20l2-multicast static-group group-address 225.0.0.1 vlan 20#return# 在Vlanif20和Vlan20上同時配置相同的組播組過濾策略命令。（可選）S9300 acl 2001S9300-acl-basic-2001 rule permit source 226.0.0.1 0.0.0.255S9300-acl-basic-2001 display this#ac

10、l number 2001rule 5 deny source 226.0.0.0 0.0.0.255#returnS9300 interface vlanif 20S9300-Vlanif20 igmp group-policy 2001S9300vlan 20S9300-vlan20 igmp-snooping group-policy 20015.1.4配置文件S9300的配置文件#multicast routing-enable#igmp-snooping enable#acl number 2000rule 5 permit source 225.0.0.0 0.0.0.255acl

11、 number 2001rule 5 permit source 226.0.0.0 0.0.0.255#vlan 10igmp-snooping enablevlan 20igmp-snooping enableigmp-snooping ssm-mapping enableigmp-snooping version 3igmp-snooping group-policy 2001igmp-snooping ssm-policy 2000igmp-snooping ssm-mapping 225.0.0.1 255.255.255.255 1.1.1.1#interface Vlanif10

12、ip address 100.100.100.1 255.255.255.0pim sm#interface Vlanif20ip address 200.200.200.1 255.255.255.0pim smigmp enableigmp version 3igmp group-policy 2001igmp ssm-mapping enableigmp static-group 225.0.0.1#interface GigabitEthernet2/0/0port link-type trunkundo port trunk allow-pass vlan 1port trunk allow-pass vlan 20l2-multicast static-group group-address 225.0.0.1 vlan 20#igmpssm-mapping 225.0.0.1 255.