Optional) Configuring The Igmp Snooping Proxy For The Vlan - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
Context
Router-Alert is a mechanism used to identify protocol packets. The packets carrying Router-
Alert options are delivered to the routing protocol layer for processing.
By default, devices do not check whether packets carry Router-Alert options for the sake of
compatibility, and send all IGMP messages to the upper layer for processing. To improve device
performance, reduce costs, and ensure protocol security, configure devices to send packets
without Router-Alert options.
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:
igmp-snooping require-router-alert
The S3700 is configured to receive IGMP messages that must contain the Router Alert option
in the IP header. The S3700 does not process the packet but discard the packet directly.
By default, the S3700 can receive IGMP messages that do not contain the Router Alert options
in the IP headers from a VLAN.
Step 4 Run:
igmp-snooping send-router-alert
The S3700 is configured to contain the Router Alert option in the IP header of the sent IGMP
messages. You can run the undo igmp-snooping send-router-alert command to set the IP
header of the sent IGMP packet not to contain the Router-Alert option.
By default, the S3700 sends IGMP messages that contain the Router Alert options in the IP
headers to a VLAN.
----End
2.3.12 (Optional) Configuring the IGMP Snooping Proxy for the
VLAN
Context
After the IGMP proxy is configured on the S3700, the S3700 replaces the upstream router to
send IGMP Query messages to the downstream devices, and receives the IGMP Report and
IGMP Leave messages from the downstream devices. In this way, bandwidth consumption
between the upstream router and the S3700 is reduced and the workload on the upstream router
is also reduced.
Issue 01 (2011-10-26) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 IGMP Snooping Configuration
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