3. Troubleshooting Functional Failures in Operation

3.11.3Communication on IPv6 PIM-SSM Network Is Disabled

If multicast relay on the IPv6 PIN-SSM network configuration is disabled, isolate the cause according to the failure analysis method below.

The figure below illustrates a network example of IPv6 PIM-SSM.

Figure 3-17: Example of IPv6 PIM-SSM Network

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multicast

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

receiver

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Participation in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the MLD group

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multicast

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sender

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

first-hop-router

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

last-hop-router

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multicast

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Participation

in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the MLD group

 

 

 

Multicast

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

receiver

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note

•first-hop-router: This router is directly connected to the multicast sender.

•last-hop-router: This router is directly connected to the multicast receiver.

(1)Common check items

The table below shows the common check items for all system in the IPv6 PIM-SSM network configuration.

Table 3-44: Common Check Items

No.

Troubleshooting Steps and Command

Action

 

 

 

1

Confirm that the use of multicast function is designated (ipv6

If the use of multicast function is not designated, correct the

 

multicast routing) in the configuration.

configuration.

 

show running-config

 

2

Confirm that the address of the loopback interface is set in the

If the address of the loopback interface is not set, correct the

 

configuration.

configuration.

 

show running-config

 

3

Confirm that PIM is running on one or more interfaces.

If PIM is not running, check the configuration. Set PIM to run

 

show ipv6 pim interface

on one or more interfaces.

4

Confirm that MLD snooping is set to the interface with PIM

When MLD snooping is set, confirm the following:

 

enabled.

• Confirm that multicast router port for MLD snooping is set

 

show mld-snooping

to the ports to which neighboring routers connect.

 

 

• See "3.5.5 Multicast Relay by MLD snooping Is Disabled."

5

Confirm in the configuration that suppression of protocol

If suppression of protocol packet and multicast packet relay is

 

packet and multicast packet relay through filtering, etc. is not

provided, correct the configuration.

 

provided on the interface that allows PIM and MLD to run.

 

 

show running-config

 

6

Check the PIM neighboring information.

If the neighboring router is not displayed, check the

 

show ipv6 pim neighbor

following:

 

 

• Confirm that PIM is running on the interface connected to

 

 

the neighboring router using the show ipv6 pim

 

 

command with "interface" parameter specified.

 

 

• Verify the settings of the neighboring router.

 

 

 

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NEC IP8800/S2400, IP8800/S6600, IP8800/S3600 manual Communication on IPv6 PIM-SSM Network Is Disabled, Common Check Items
Page 146 Page 148

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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