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Host port(s):total 1 port.
Eth1/2
由上可知，Switch A的端口Ethernet1/2和Ethernet1/4下都有组播组G1的接收者，Switch C的端口Ethernet1/2下有组播组G2的接收者。
(3) 通过使用display igmp interface命令可以查看各路由器的主机侧接口上IGMP的配置和运行情况。例如：
# 查看Router C的主机侧接口Ethernet1/1上IGMP的配置和运行情况。
<RouterC> display igmp interface ethernet 1/1
Ethernet1/1(10.110.2.1):
IGMP is enabled
Current IGMP version is 2
Value of query interval for IGMP(in seconds): 60
Value of other querier present interval for IGMP(in seconds): 125
Value of maximum query response time for IGMP(in seconds): 10
Querier for IGMP: 10.110.2.1 (this router)
Total 1 IGMP Group reported
由上可知，Router C的接口Ethernet1/1上运行了IGMPv2，并由该接口作为IGMP查询器。
(4) 通过使用display msdp brief命令可以查看路由器之间MSDP对等体建立的情况。例如：
# 查看Router B上MSDP对等体的简要信息。
<RouterB> display msdp brief
MSDP Peer Brief Information of VPN-Instance: public net
Configured Up Listen Connect Shutdown Down
1 1 0 0 0 0
Peer's Address State Up/Down time AS SA Count Reset Count
10.2.2.2 Up 00:10:17 ? 1 0
# 查看Router C上MSDP对等体的简要信息。
<RouterC> display msdp brief
MSDP Peer Brief Information of VPN-Instance: public net
Configured Up Listen Connect Shutdown Down
1 1 0 0 0 0
Peer's Address State Up/Down time AS SA Count Reset Count
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