组播配置检查步骤

1.所有设备都需要关闭组播风暴抑制命令

no storm-control multicast

2.对于37或57：

首先检查是否启用了组播路由转发协议
sh run | in ip multicast-routing // 如果没有，需要配置开启，详细配置参见配置模板

其次检查所有三层接口下是否启用了组播路由协议
sh ru int vlan 120

！
interface VLAN 120
ip pim sparse-mode //有这一条命令，如果没有请配置

最后可以通过show命令验证组播功能是否开启
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a、检查组播组RP

S_262A_RG_8606A#sh ip pim sp rp ma

PIM Group-to-RP Mappings
Group(s): 239.251.192.0/24 // 有线电视频道
RP: 125.217.173.1(Not self) // 有线电视频道的RP地址
Info source: 125.217.173.1, via bootstrap, priority 192
Uptime: 01d20h37m, expires: 00:02:15
Group(s): 239.251.193.0/24 // 外国语学院卫星电视频道
RP: 202.116.87.126(Not self) // 外国语学院卫星电视频道的RP地址
Info source: 125.217.173.1, via bootstrap, priority 0
Uptime: 01d20h37m, expires: 00:02:15



b、检查pim邻居

S_262A_RG_8606A#sh ip pim sp nei

Neighbor Interface Uptime/Expires Ver DR
Address Priority/Mode
10.20.20.34 GigabitEthernet 1/16 01d20h40m/00:01:36 v2 1 / DR
10.20.20.38 GigabitEthernet 1/18 01d20h40m/00:01:34 v2 1 / DR
10.10.32.142 GigabitEthernet 2/11 01d20h40m/00:01:40 v2 1 / DR
10.20.20.126 GigabitEthernet 2/12 01d20h39m/00:01:38 v2 1 / DR
10.10.32.134 GigabitEthernet 2/22 01d20h39m/00:01:37 v2 1 / DR
10.0.0.51 VLAN 2 01d20h39m/00:01:33 v2 N /
202.116.65.129 VLAN 15 01d20h39m/00:01:25 v2 N / DR
10.10.32.34 VLAN 58 01d20h39m/00:01:36 v2 1 / DR
10.10.32.130 VLAN 82 01d20h39m/00:01:16 v2 1 / DR
10.10.24.154 VLAN 199 01d20h39m/00:01:39 v2 N / DR
202.116.73.166 VLAN 356 01d20h39m/00:01:35 v2 1 /
10.10.2.57 VLAN 812 01d20h39m/00:01:38 v2 1 /


c、检查自举路由器bsr地址

S_262A_RG_8606A#sh ip pim sp bsr

PIMv2 Bootstrap information
BSR address: 125.217.173.1 bsr地址
Uptime: 01d20h39m, BSR Priority: 64, Hash mask length: 10
Expires: 00:01:41
Role: Non-candidate BSR Priority: 0, Hash mask length: 10
State: Accept Preferred

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3.对于21/26系列交换机的组播检查命令

a、检查是否已打开igmp snooping

RG_2150A#sh ip igmp snooping

Igmp-snooping mode : ivgl
SVGL vlan-id : 1
SVGL profile number : 0
Source check port : Enabled
Qu

ery max respone time : 10(Seconds)


b、检查级联口g1/1是否为VLAN125的组播路由口

RG_2150A#sh ip igmp snooping mr

Vlan Interface State IGMP profile
---- --------- -------- -------------
125 Gi1/1 static 1


c、检查哪个接口加入了哪个组播组
本例是g1/1接口下有VLAN125的接收者在接收239.251.192.27这个组，级联口g1/1是VLAN125的组播路由口

RG_2150A#sh ip igmp snooping gda-table
Abbr: M - mrouter
D - dynamic
S - static

VLAN Address Member ports
----- -------------------- -----------------------------------
125 239.251.192.27 Gi1/1(D)
125 239.251.192.27 Gi1/1(M)