3.Troubleshooting Functional Failures in Operation

No.

Troubleshooting Steps and Command

Action

 

 

 

7

Check to see if the unicast route to the multicast data sender

If the unicast route does not exist, see "3.10 IPv6 Unicast

 

exists.

Routing Communication Failure."

 

show ipv6 route

 

8

Confirm that PIM is running on the sending interface for the

If IGMP is not running, check the configuration and set the

 

unicast route to the multicast data sender.

configuration to run PIM on the sending interface for the

 

show ipv6 pim interface

unicast route.

9

Confirm that the PIM-SSM group addresses contain the relay

If the PIM-SSM group addresses do not contain the relay

 

target group address, referring to the configuration.

target group address, correct the configuration.

 

show running-config

 

10

Confirm that the multicast relay routing information exists.

If the multicast routing information does not exist, check the

 

show ipv6 mroute

setting of the downstream router.

11

Confirm that multicast routing information or multicast

When warning is output, confirm that unexpected multicast

 

forwarding entry does not exceed the upper limit.

routing information or unexpected multicast forwarding entry

 

Multicast routing information:

has not been created. If much of the negative cache exists in

 

show ipv6 mroute

multicast forwarding entry, check to see if no terminal

 

Multicast forwarding entry:

transmitting unnecessary packets exist.

 

show ipv6 mcache

 

 

netstat multicast

 

(2) last-hop-router check items

The table below shows the items to be checked when this system is the last-hop-router in the IPv6 PIM-SSM network configuration.

Table 3-45: last-hop-router Check Items

No.

Troubleshooting Steps and Command

Action

 

 

 

1

If the mode of multicast receiver is MLDv1/MLDv2

If the use of PIM-SSM in MLDv1/MLDv2 (EXCLUDE

 

(EXCLUDE mode), confirm in the configuration that the use

mode) is not designated, correct the configuration.

 

of PIM-SSM in MLDv1/MLDv2 (EXCLUDE mode) is

 

 

designated (ipv6 mld ssm-map enable).

 

 

show running-config

 

2

If the mode of multicast receiver is MLDv1/MLDv2

If cooperation with PIM-SSM in MLDv1/MLDv2

 

(EXCLUDE mode), confirm in the configuration that

(EXCLUDE mode) is not designated, correct the

 

cooperation with PIM-SSM in MLDv1/MLDv2 (EXCLUDE

configuration.

 

mode) is set for the group address and source address to be

 

 

relayed by PIM-SSM (ipv6 mld ssm-map static).

 

 

show running-config

 

3

Confirm that MLD is running on the interface connected to the

If MLD is not running, check the configuration and set the

 

multicast receiver.

configuration to run MLD.

 

show ipv6 mld interface

 

4

Confirm that MLD warning information is not displayed on

If displayed, take the action against the warning. For details

 

the interface connected to the multicast receiver.

on the warning, see "Operation Commands."

 

show ipv6 mld interface

 

5

Confirm that the multicast receiver participates in the relay

If the group does not participate in the relay target group,

 

target group via MLD.

check the setting of the multicast receiver.

 

show ipv6 mld group

 

6

Confirm that the source address is registered in the MLD group

If the mode of multicast receiver is MLDv2 (INCLUDE

 

information.

mode) and the source address is not registered, check the

 

show ipv6 mld group

multicast receiver. If the mode of multicast receiver is

 

 

MLDv1/MLDv2 (EXCLUDE mode), confirm in the

 

 

configuration that cooperation with PIM-SSM is set.

 

 

 

7

If there is an interface in which the relay target group

If this system is not DR, check DR of the relay target interface.

 

participates and PIM is running, confirm that this system is

 

 

DR.

 

 

show ipv6 pim interface

 

86

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NEC IP8800/S6700, IP8800/S6600, IP8800/S3600, IP8800/S2400, IP8800/S6300 manual last-hop-router Check Items
Page 147 Page 149

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.

The IP8800/S2400 is an entry-level switch tailored for small to medium enterprises. It features a compact design and high port density, making it ideal for network edge applications. The model supports both Layer 2 and Layer 3 switching capabilities, enabling efficient traffic management. With its robust security features, including access control lists and support for VLANs, the IP8800/S2400 ensures secure connectivity.

Moving to the IP8800/S3600, this switch is designed for data center environments and offers high throughput with advanced routing capabilities. It is equipped with high-capacity 10G and 40G Ethernet ports, facilitating faster data transfer rates. The S3600 supports various protocols such as MPLS and Segment Routing, enhancing its ability to manage complex network architectures. Its energy-efficient design also helps reduce operational costs.

The IP8800/S6300 is tailored for high-performance networking scenarios, featuring a flexible architecture that supports both traditional and cloud-based services. With extensive QoS capabilities, the S6300 optimizes traffic flow and manages bandwidth efficiently, ensuring high-quality service delivery. Its virtualization support allows for easier integration into modern, software-defined networking environments.

The IP8800/S6600 provides a comprehensive solution for service providers and large enterprises, boasting high scalability and modularity. This model supports advanced features such as network slicing and the ability to handle high-density 100G interfaces. Its robust management tools, including centralized control and automation capabilities, simplify network operations significantly.

Finally, the IP8800/S6700 represents the pinnacle of the series, designed for mission-critical applications requiring the utmost reliability and performance. It supports advanced analytics, AI-driven insights, and comprehensive telemetry, enabling proactive network management. With high availability features and extensive redundancy options, the S6700 ensures continuous operation, making it ideal for core network functions.

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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