Edge-Core ECS3510-10PD, Management Manual

Page: 626 / 1494

C
HAPTER
17
| Multicast Filtering
Layer 2 IGMP (Snooping and Query for IPv4)
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To show the all interfaces statically or dynamically assigned to a multicast
service:
1.
Click Multicast, IGMP Snooping,
IGMP Member
.
2.
Select Show Current Member from the Action list.
3.
Select the VLAN for which to display this information.
Figure 364: Showing Current Interfaces Assigned to a Multicast Service
S
ETTING
IGMP
S
NOOPING
S
TATUS
PER
I
NTERFACE
Use the Multicast > IGMP Snooping > Interface (Configure VLAN) page to
configure IGMP snooping attributes for a VLAN. To configure snooping
globally, refer to "Configuring IGMP Snooping and Query Parameters" on
page 618 .
CLI R
EFERENCES
◆
"IGMP Snooping" on page 1206
C
OMMAND
U
SAGE
Multicast Router Discovery
There have been many mechanisms used in the past to identify multicast
routers. This has lead to interoperability issues between multicast routers
and snooping switches from different vendors. In response to this problem,
the Multicast Router Discovery (MRD) protocol has been developed for use
by IGMP snooping and multicast routing devices. MRD is used to discover
which interfaces are attached to multicast routers, allowing IGMP-enabled
devices to determine where to send multicast source and group
membership messages. (MRD is specified in draft-ietf-magma-mrdisc-07.)
Multicast source data and group membership reports must be received by
all multicast routers on a segment. Using the group membership protocol
query messages to discover multicast routers is insufficient due to query
suppression. MRD therefore provides a standardized way to identify
multicast routers without relying on any particular multicast routing
protocol.