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.

 

 

 

47

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Image 109
NEC IP8800/S6300, IP8800/S6600 manual Multicast Relay by MLD snooping Is Disabled, Is it a relay within the same VLAN?
Page 108 Page 110

IP8800/S6700, IP8800/S3600, IP8800/S6600, IP8800/S6300, IP8800/S2400 specifications

The NEC IP8800 series comprises a range of advanced networking solutions designed for various applications ranging from enterprise networking to service provider environments. This series includes models such as the IP8800/S2400, IP8800/S3600, IP8800/S6300, IP8800/S6600, and IP8800/S6700, each with its unique set of features and capabilities aimed at delivering robust performance, security, and scalability.

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In summary, the NEC IP8800 series offers a versatile range of switches that combine advanced technologies, high performance, and robust security features, catering to various networking needs across different industries. Each model is designed to provide not only superior connectivity but also the flexibility and scalability required in today’s fast-paced digital landscape.
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