Multicast Relay By Igmp Snooping Is Disabled - NEC IP8800/S2400 Series Troubleshooting Manual

3.
Troubleshooting Functional Failures in Operation
3.5.4

Multicast Relay by IGMP snooping Is Disabled

If multicast relay is disabled when using IGMP snooping, follow the analysis flow to identify the symptom using steps
shown in the table below and isolate the problem.
Figure 3-5: Analysis Flow
This system may be the
IGMP querier.
Y
Verify that the configuration of
IGMP snooping is properly set in
the corresponding VLAN.
44
Analysis Flow
Is there log information?
N
Is filter setting correct?
Y
Is IPv4 multicast used?
N
Is there IGMP querier?
Y
Is the device that relays
multicast data connected
to the same
VLAN?
N
Is the data relayed within
the same VLAN?
N
Refer to "3.8 IPv4 Multicast
Routing Communication
Failure."
see the manual "Message Log
Y
Reference" and perform the
actions described in [Action]
associated with each log
message.
Verify that the settings of
N
filter and QoS Control are
correct.
Verify that the settings for
Y
using IPv4 multicast at the
same time are correct.
N
Set IP address on VLAN,
and add the querier
function in IGMP snooping.
Unresolve
Y Set the connecting port as
a multicast router port.
Unresolved
N
Is it a relay within
the same VLAN?
Y
Verify that other systems
are set to relay the
multicast data.