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ISCOM2600G-HI (A) Series Configuration Guide
Use the following command to show configurations of IGMP Querier.
Raisecom#show igmp querier
Global IGMP querier configuration:
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Querier Status
Querier Source Ip
Query Interval(s)
Query Max Response Interval(s) :10
Last Member Query Interval(s)
Robust Count
Aging Time(s)
Next General Query(s)
8.5 IGMP MVR
8.5.1 Introduction
IGMP Multicast VLAN Registration (MVR) is multicast constraining mechanism running on
Layer 2 devices, used for multicast group management and control and achieve Layer 2
multicast.
IGMP MVR adds member interfaces belonging to different user VLAN in switch to multicast
VLAN by configuring multicast VLAN and makes different VLAN user uses one common
multicast VLAN, then the multicast data will be transmitted only in one multicast VLAN
without copying one for each user VLAN, thus saving bandwidth. At the same time, multicast
VLAN and user VLAN are completely isolated which also increases the security.
Both IGMP MVR and IGMP Snooping can achieve Layer 2 multicast, but the difference is:
multicast VLAN in IGMP Snooping is the same with user VLAN, while multicast VLAN in
IGMP MVR can be different with user VLAN.
One switch can configure up to 10 multicast VLAN, at least one multicast VLAN and
group addresses. The supported maximum number of multicast groups is 1024.
8.5.2 Preparing for configurations
Scenario
As shown in Figure 8-8, multiple users receive data from the multicast source. These users
and the multicast router belong to different VLAN. Enable IGMP MVR on Switch A, and
configure multicast VLAN. In this way, users in different VLAN can share a multicast VLAN
to receive the same multicast data, and bandwidth waste is reduced.
: Enable
: 192.168.1.2
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8 Multicast
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