Configuring Controllable Multicast; Establishing The Configuration Task - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
G4. A multicast group can be contained in several multicast group lists. For example, G3 is
contained in L1 and L2.
Multicast Profile
A multicast profile is a set of multicast group lists, and defines the frame of users' rights to join
related multicast groups. A multicast profile can contain several multicast group lists. For
example, in
be contained in several multicast profiles. For example, L2 is contained in P1 and P2. Multicast
group lists that are added to a profile have their attributes, that is, preview and watch. If a
multicast group list is added to a multicast profile in watch mode, users of the multicast profile
can watch all multicast groups in the list. If a multicast group list is added to a multicast profile
in preview mode, users of the multicast profile can preview all multicast groups in the list.
Control Flow
The S3700 on which controllable multicast is applied can control the generation of Layer 2
multicast forwarding entries by intercepting IGMP Report messages. After receiving an IGMP
Report message from a user, the S3700 obtains the profile based on the VLAN to which the
message belongs. If the group is not in the list of the profile, the user cannot join the group. The
S3700 intercepts the IGMP Report message and do not generate the related forwarding entry.
Therefore, the user cannot receive data flows of this group. If the multicast group is in the list
of the profile, check the mode through which the list is added to the profile. If the list is added
to the profile in watch mode, the S3700 allows the IGMP Report message to pass through. If the
list is added to the profile in preview mode, the S3700 allows the IGMP Report message to pass
through and starts a timer at the same time. When the preview period expires, the S3700 deletes
the forwarding entry of the group and intercepts subsequent IGMP Report messages of the group.
The preview function is implemented.

4.3 Configuring Controllable Multicast

This section describes how to configure controllable multicast.

4.3.1 Establishing the Configuration Task

Applicable Environment
To control the authorities of users to join related multicast groups, you can configure controllable
multicast.
Pre-configuration Tasks
Before configuring controllable multicast, complete the following task:
l
Data Preparation
To configure controllable multicast, you need the following data.
Issue 01 (2011-10-26)
Figure 4-1, multicast profile P1 contains L1, L2, and L3. A multicast group list can
Configuring Layer 2 multicast, that is, IGMP snooping or IGMP proxy, to forward multicast
packets normally
NOTE
In the multicast VLAN, controllable multicast needs to be configured in the user VLAN.
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4 Controllable Multicast Configuration
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