Huawei Quidway S3000-EI Series User Manual

Operation Manual - Multicast
Quidway S3000-EI Series Ethernet Switches Chapter 2
IGMP Snooping Configuration
Huawei Technologies Proprietary
2-3
II. Imp
The P Snooping to listen to the IGMP messages and map the
host and its ports to the corresponding multicast group address. To implement IGMP
IGMP messages in the way
lement Layer 2 multicast with IGMP Snooping
Ethernet switch runs IGM
Snooping, the Layer 2 Ethernet switch processes different
illustrated in the figure below:
Internet
IGMP packets
A Ethernet Switch
running IGMP Snooping
A router
running IGMP
IGMP packets
Figure 2-3 Implement IGMP Snooping
1) IGMP general query message: Transmitted by the multicast router to the multicast
group members to query which multicast group con ember. When an IGMP
t a router port, the Ethernet switch will reset the
aging timer of the port. When a port other than a router port receives the IGMP
2)
exists. If the
tains m
general query message arrives a
general query message, the Ethernet switch will notify the multicast router that a
port is ready to join a multicast group and starts the aging timer for the port.
IGMP specific query message: Transmitted from the multicast router to the
multicast members and used for querying if a specific group contains any member.
When received IGMP specific query message, the switch only transmits the
specific query message to the IP multicast group which is queried.
3) IGMP report message: Transmitted from the host to the multicast router and used
for applying to a multicast group or responding to the IGMP query message. When
received the IGMP report message, the switch checks if the MAC multicast group,
corresponding to the IP multicast group the packet is ready to join
corresponding MAC multicast group does not exist, the switch only notifies the
router that a member is ready to join a multicast group, creates a new MAC
multicast group, adds the port received the message to the group, starts the port
aging timer, and then adds all the router ports in the native VLAN of the port into
the MAC multicast forwarding table, and meanwhile creates an IP multicast group
and adds the port received the report message to it. If the corresponding MAC

Huawei Quidway S3000-EI Series Specifications

General

Brand	Huawei
Model	Quidway S3000-EI Series
Category	Switch
Language	English