NEC IP8800/S6300 Multicast Relay by MLD snooping Is Disabled, Is it a relay within the same VLAN?

3. Troubleshooting Functional Failures in Operation

3.5.5Multicast Relay by MLD snooping Is Disabled

If multicast relay is disabled when using MLD snooping, follow the analysis flow to identify the symptom using steps shown in the table below and isolate the problem.

Figure 3-6: Analysis Flow

Analysis Flow

Is there log information?

N

Is filter setting correct?

Y

Is IPv6 multicast used?

YSee the manual "Message Log Reference" and perform the

action described in [Action] associated with each log message.

NVerify that the settings of

filter and QoS Control are correct.

YVerify that the settings for

using IPv6 multicast at the same time are correct.

N

					N	Set IP address on VLAN,
	Is there MLD querier?					and add the querier
This system may be the				Y		function in MLD snooping.
MLD querier.
							Unresolved
					Y
						Set the connecting port as
	Is the device that relays
						a multicast router port.
	multicast data connected
		to the same
			VLAN?

N

YIs it a relay within the same VLAN?

N

N

Unresolved

Is the data relayed

within the same VLAN?

	Refer to "3.11 IPv6 Multicast		Y
Verify that the MLD snooping		Verify that other devices
	Routing Communication	are set to relay the
configuration is properly set up in
	Failure."	multicast data.
the corresponding VLAN.

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