4. Run:
igmp robust-count robust-value
The IGMP robustness variable is set.
When the S7700 starts, the S7700 sends General Query messages robust-value times.
The interval between the messages is 1/4 of the interval for sending IGMP General
Query messages. By default, the robustness variable is 2.
----End
4.4.4 Configuring the IGMPv2 or IGMPv3 Querier
Context
The IGMP querier can be configured globally or on an interface.
l The global configuration is valid on each interface.
l The configuration on an interface is valid only for the specified interface. The configuration
on an interface takes precedence over the global configuration. If the IGMP querier is not
configured on the interface, the global configuration is used.
When the version of IGMP is IGMPv2 or IGMPv3, the configurable parameters of the IGMP
querier include the interval for sending IGMP General Query messages, interval for sending
IGMP Group-Specific Query messages, maximum response time for IGMP Query messages,
Keepalive period of other IGMP queriers, and IGMP robustness variable.
NOTE
In actual configuration, ensure that the interval for sending IGMP General Query messages is greater than
the maximum response time for IGMP Query messages and is smaller than the Keepalive period of other
IGMP queriers.
Procedure
l Configuring the IGMP querier globally
1. Run:
system-view
The system view is displayed.
2. Run:
igmp
The IGMP view is displayed.
3. Run:
timer query interval
The interval for sending IGMP General Query messages is set.
By default, the interval for sending IGMP General Query messages is 60 seconds.
4. Run:
robust-count robust-value
The IGMP robustness variable is set.
– When the system starts, the system sends General Query messages for a number
of times specified by the value of the robustness variable. The interval for sending
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 4 IGMP Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
79
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