Huawei quidway s7700 - Optional) Configuring MLD Query and Response

The MLD querier periodically sends MLD Query messages on the share network connected to
receivers. When receiving a Report message from a member, the switchs on the shared network
refresh information about the member relationship.
If non-queriers do not receive any query message within the Keepalive period of the MLD
querier, the querier is considered faulty, and a new round of the querier election is triggered
automatically.
In the application of ADSL dial-up access, one host corresponds to a port. A querier, therefore,
corresponds to only one receiver host. When a receiver host switches among multiple groups
such as TV channels, you can enable the fast leave mechanism on the querier.
Pre-configuration Tasks
Before configuring MLD query control, complete the following tasks:
l Configuring a unicast routing protocol to interconnect the entire multicast domain
l Configuring Basic MLD Functions
Data Preparation
To configure MLD query control, you need the following data.
No. Data
1 The interval for sending MLD general Query messages
2 Robustness variable
3 The maximum response time of the MLD Query message
4 Keepalive period of the other MLD queriers
5 The interval for sending MLD group-specific Query messages and group/source-
specific Query messages
6 ACL6 that limits the application range of prompt leave
10.5.2 (Optional) Configuring MLD Query and Response
Configuring an MLD querier involves setting the interval for sending general query messages,
MLD robustness variable, maximum response time of the MLD Query message, Keepalive
period of other MLD queriers, and interval for sending last listener query messages, and enabling
the MLD fast leave function.
Context
CAUTION
In the actual configuration, ensure that the interval for sending general Query messages is greater
than the maximum response time and is smaller than the Keepalive time of the other MLD
queriers.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 10 MLD Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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