Optional) Configuring The S3700 To Actively Send Igmp Query Messages; Optional) Configuring Router Alert Options In Igmp Messages - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
vlan vlan-id
The VLAN view is displayed.
Step 3 Run:
multicast drop-unknown
Discarding unknown multicast data packets is enabled.
By default, unknown multicast data packets are broadcast in the VLAN.
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2.3.10 (Optional) Configuring the S3700 to Actively Send IGMP
Query Messages
Context
If a Layer 2 network topology changes, the forwarding path of VLAN packets may change. To
enable the S3700 to rapidly sense the Layer 2 network topology change, configure the S3700 to
actively send IGMP Query messages. The S3700 then updates information about multicast
member interfaces according to the IGMP Report messages and quickly reroutes multicast
packets for the VLAN to new forwarding paths, preventing interruption of multicast services.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
igmp-snooping send-query enable
The S3700 enabled with IGMP snooping is configured to respond to changes of a Layer 2
network topology.
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2.3.11 (Optional) Configuring Router Alert Options in IGMP
Messages
Issue 01 (2011-10-26)
NOTE
The function of responding to changes of Layer 2 network topology is usually used on a ring network.
When the topology of the ring network changes, theS3700 sends an IGMP Query message with the source
IP address being 192.168.0.1. The source IP address can be changed by the igmp-snooping send-query
source-address source-address command.
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2 IGMP Snooping Configuration
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