Configuring Basic Igmp Functions; Establishing The Configuration Task - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
You can determine whether to set the Router-Alert option in the IGMP messages to be sent and
whether the received IGMP messages must contain the Router-Alert option.
IGMP Query Controller
For IGMPv1, you can set the interval for sending General Query messages and robustness
variable.
For IGMPv2, you can set the interval for sending General Query messages, robustness variable,
maximum response duration of IGMP Query messages, and IGMP prompt leave.
For IGMPv3, you can set the interval for sending General Query messages, robustness variable,
and maximum response time of IGMP Query messages.
SSM-Mapping
An S3700 can serve hosts of IGMPv1 and IGMPv2 after you configure SSM-Mapping on the
S3700.
IGMP Limit
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5.3 Configuring Basic IGMP Functions

This section describes how to configure and apply IGMP.

5.3.1 Establishing the Configuration Task

Applicable Environment
IGMP is applied to the network segment in which a host is connected to an S3700. IGMP needs
to run on both the S3700 and the host. The following contents describe how to configure IGMP
on an S3700.
You must enable IP multicast routing before configuring IGMP. IP multicast routing is the
prerequisite of configuring all multicast functions. If IP multicast routing is disabled, the
multicast-related configurations cannot take effect.
Issue 01 (2011-10-26)
NOTE
IGMPv1 does not support querier election. Therefore, you need to enable PIM for querier election.
The function of IGMP Limit is applicable to IPv4 PIM-SM and IPv4 PIM-DM networks.
To limit the number of users accessing IP core networks, you can configure the IGMP limit
function.
– Configure the maximum number of global IGMP group memberships on a S3700.
– Configure the maximum number of IGMP group memberships on an interface.
NOTE
If the IGMP limit function is required to be configured globally, and for an interface on the same
S3700, it is recommended that the limits on the number of global IGMP group memberships, and the
number of IGMP group memberships on the interface should be in descending order.
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