H3C Technologies H3C S10500 Series Switches - Manual (Page 59)

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Total 1 IP Source(s).
Total 1 MAC Group(s).
Port flags: D-Dynamic port, S-Static port, C-Copy port
Subvlan flags: R-Real VLAN, C-Copy VLAN
Vlan(id):100.
Total 1 IP Group(s).
Total 1 IP Source(s).
Total 1 MAC Group(s).
Router port unit board: Mask(0x04)
Router port(s):total 1 port.
GE1/0/2 (D)
IP group(s):the following ip group(s) match to one mac group.
IP group address:224.1.1.1
(0.0.0.0, 224.1.1.1):
Attribute: Host Board
Host port unit board: Mask(0x04)
Host port(s):total 2 port.
GE1/0/3 (S)
GE1/0/5 (S)
MAC group(s):
MAC group address:0100-5e01-0101
Host port unit board: Mask(0x04)
Host port(s):total 2 port.
GE1/0/3
GE1/0/5
The output shows that GigabitEthernet 1/0/3 and GigabitEthernet 1/0/5 on Switch C have become
static member ports for multicast group 224.1.1.1.
IGMP snooping querier configuration example
Network requirements
• As shown in Figure 16 , in a Layer 2–only network environment, two multicast sources Source 1 and
Source 2 send multicast data to multicast groups 224.1.1.1 and 225.1.1.1 respectively, Host A and
Host C are receivers of multicast group 224.1.1.1, and Host B and Host D are receivers of multicast
group 225.1.1.1.
• All the receivers run IGMPv2, and all the switches run IGMPv2 snooping. Switch A, which is close
to the multicast sources, is chosen as the IGMP snooping querier.
• To prevent flooding of unknown multicast traffic within the VLAN, be sure to configure all the
switches to drop unknown multicast data packets.
• Because a switch does not enlist a port that has heard an IGMP query with a source IP address of
0.0.0.0 (default) as a dynamic router port, configure a non-all-zero IP address as the source IP
address of IGMP queries to ensure normal creation of Layer 2 multicast forwarding entries.