第21章 IGMPv1配置

1.R1配置

[R1]multicast routing-enable 
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]pim dm
[R1-GigabitEthernet0/0/0]igmp enable 
[R1-GigabitEthernet0/0/0]igmp version 1
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]pim dm

2.R2配置

[R2]multicast routing-enable 
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]pim dm
[R2-GigabitEthernet0/0/0]igmp enable 
[R2-GigabitEthernet0/0/0]igmp version 1
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]pim  dm 

3.查看查询器的选举

[R1]display igmp interface GigabitEthernet 0/0/0
Interface information of VPN-Instance: public net 
 GigabitEthernet0/0/0(12.1.1.1): 
   IGMP is enabled
   Current IGMP version is 1
   IGMP state: up
   IGMP group policy: none
   IGMP limit: -
   Value of query interval for IGMP (negotiated): -
   Value of query interval for IGMP (configured): 60 s
   Value of other querier timeout for IGMP: 0 s
   Value of maximum query response time for IGMP: -
   Querier for IGMP: 12.1.1.2 

4.查看DR信息

[R1]display pim interface 
 VPN-Instance: public net
 Interface           State NbrCnt HelloInt   DR-Pri     DR-Address
 GE0/0/0             up    1      30         1          12.1.1.2    

5.修改R1接口DR优先级，查看DR信息

[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]pim hello-option dr-priority 100
[R1]display pim interface
 VPN-Instance: public net
 Interface           State NbrCnt HelloInt   DR-Pri     DR-Address
 GE0/0/0             up    1      30         100        12.1.1.1        (local)

[R1]display igmp interface GigabitEthernet 0/0/0    
Interface information of VPN-Instance: public net 
 GigabitEthernet0/0/0(12.1.1.1): 
   IGMP is enabled
   Current IGMP version is 1
   IGMP state: up
   IGMP group policy: none
   IGMP limit: -
   Value of query interval for IGMP (negotiated): -
   Value of query interval for IGMP (configured): 60 s
   Value of other querier timeout for IGMP: 0 s
   Value of maximum query response time for IGMP: -
   Querier for IGMP: 12.1.1.1 (this router)

6.R1上打开IGMP的Debug功能，查看IGMPv1 Report消息

<R1>debugging igmp report
<R1>debugging igmp event 
<R1>terminal monitor
<R1>terminal debugging
<R1>debugging igmp leave 

7.在PC1上配置IGMPv1并加入组播组229.1.1.1

8.查看R1上查看IGMP组信息

[R1]display igmp group 
Interface group report information of VPN-Instance: public net 
 GigabitEthernet0/0/0(12.1.1.1): 
  Total 1 IGMP Group reported
   Group Address   Last Reporter   Uptime      Expires     
   239.1.1.1       12.1.1.3        00:16:25    00:01:51