11.9.4 Example for Enabling the MLD Snooping Module to
Respond to Changes of the Layer 2 Network Topology
Networking Requirements
As shown in Figure 11-4, four S7700s form a ring network to improve the network reliability.
To prevent loops on the network, the S7700s run the Multiple Spanning Tree Protocol (MSTP).
Host 1 and Host 2 need to receive multicast data from the multicast source. The IPv6 addresses
of Host 1 and Host 2 are 2::3/112 and 3::1/64 respectively.
Figure 11-4 Networking diagram for enabling the MLD snooping module to respond to changes
of the Layer 2 network topology
multicast source
VLAN 3
DHCP server
IP/MPLS
core
GE1/0/1
GE1/0/3
SwitchA
GE1/0/2
Host1
Host2
GE1/0/5
GE1/0/6
GE1/0/7
GE1/0/2
MSTP
SwitchC
SwitchB
SwitchD
GE1/0/3 GE1/0/4
2::3/112
GE1/0/1
3::1/64
GE1/0/8
Configuration Roadmap
The configuration roadmap is as follows:
1. Enable MSTP on all the S7700s.
2. Create VLAN 3 and add interfaces to VLAN 3 on all the S7700s.
3. Enable MLD snooping globally on all the S7700s.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 11 MLD Snooping Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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