Home » Cisco » 350-080 » Which two configurations should be applied to the devices on the network to accomplish this goal?
Refer to the exhibit.
A new Nexus device, Router-B, was recently added to the network. The engineer wants to make Router-B the designated IGMP querier for this network. Which two configurations should be applied to the devices on the network to accomplish this goal? (Choose two.)
A. Router-B(config)# interface Ethernet1/1
Router-B(config-if)# ip address 10.1.1.251 255.255.255.0
B. Router-B(config)# interface Ethernet1/1
Router-B(config-if)# ip address 10.1.1.249 255.255.255.0
Router-B(config)# feature igmp
C. Router-B(config)# interface Ethernet1/1
Router-B(config-if)# ip igmp version 2
Router-B(config)# feature igmp
D. Router-B(config)# interface Ethernet1/1
Router-B(config-if)# ip igmp querier
Router-B(config)# feature pim
E. Router-B(config)# interface Ethernet1/1
Router-B(config-if)# ip pim sparse-mode
Correct Answer: BE
Explanation/Reference:
Explanation:
Both IGMPv1 and IGMPv2 support membership report suppression, which means that if two hosts on the same subnet want to receive multicast data for the same group, then the host that receives a member report from the other host suppresses sending its report. Membership report suppression occurs for hosts that share a port.
If no more than one host is attached to each VLAN switch port, then you can configure the fast leave feature in IGMPv2. The fast leave feature does not send last member query messages to hosts. As soon as the software receives an IGMP leave message, the software stops forwarding multicast data to that port.
IGMPv1 does not provide an explicit IGMP leave message, so the software must rely on the membership message timeout to indicate that no hosts remain that want to receive multicast data for a particular group.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/CLIConfigurationGuide/IGMPSnooping.html