38
The output shows the following information:
•
Host A and Host B have joined multicast group 224.1.1.1 through the member ports
HundredGigE 1/0/4 and HundredGigE 1/0/3 on Switch A, respectively.
•
Host A and Host B have failed to join multicast group 224.2.2.2.
Static port configuration example (for VLANs)
Network requirements
•
Router A runs IGMPv2 and acts as the IGMP querier. Switch A, Switch B, and Switch C run
IGMPv2 snooping.
•
Host A and host C are permanent receivers of multicast group 224.1.1.1.
Configure static ports to meet the following requirements:
•
To enhance the reliability of multicast traffic transmission, configure HundredGigE 1/0/3 and
HundredGigE 1/0/5 on Switch C as static member ports for multicast group 224.1.1.1.
•
Suppose the STP runs on the network. To avoid data loops, the forwarding path from Switch A
to Switch C is blocked. Multicast data flows to the receivers attached to Switch C only along the
path of Switch A—Switch B—Switch C. When this path is blocked, a minimum of one IGMP
query-response cycle must be completed before multicast data flows to the receivers along the
path of Switch A—Switch C. In this case, the multicast delivery is interrupted during the
process. For more information about the STP, see
Layer 2—LAN Switching Configuration
Guide
.
Configure HundredGigE 1/0/3 on Switch A as a static router port. Then, multicast data can flow
to the receivers nearly uninterruptedly along the path of Switch A—Switch C when the path of
Switch A—Switch B—Switch C is blocked.
Figure 15 Network diagram
Configuration procedure
1.
Assign an IP address and subnet mask to each interface, as shown in
Figure 15. (Details not
shown.)
2.
Configure Router A:
# Enable IP multicast routing.
Source
1.1.1.1/24
Router A
IGMP querier
HGE1/0/1
10.1.1.1/24
Switch A
Switch B
Switch C
HGE1/0/1
HGE1/0/2
HGE1/0/3
HGE1/0/1
HGE1/0/2
HGE1/0/1
HGE1/0/2
HGE1/0/3
HGE1/0/4
HGE1/0/5
Host A
Receiver
Host B
Host C
Receiver
VLAN 100
HGE1/0/2
1.1.1.2/24