IPv6 Network Communication Failure | NEC IP8800/S6700, IP8800/S6600

3. Troubleshooting Functional Failures in Operation

3.9IPv6 Network Communication Failure

3.9.1Communication Is Disabled or Is Disconnected

There are three possible causes that result in communication failure on the IPv6 network using this system.

1.Configuration on IPv6 communication has changed

2.Network configuration has changed

3.Network component failures

For 1 and 2 above, check for the differences in the configuration and network configuration provided before and after the change. Check for any difference disabling communication.

This section describes procedure to identify the failed part and to isolate the problem, mainly for the cases of "IPv6 communication is disabled although the configuration and network configuration are correct." and "IPv6 communication had been normally running but it is disabled now." as described in 3 above.

To locate the faulty part and cause, follow the flow below.

Figure 3-13: Failure Analysis Procedure When IPv6 Communication Disabled

Verify if there is an occurrence of line failure using the show

logging command.

No physical failure

message exists.

Check the Up/Down status of the interface using the show ipv6 interface command.

Identify the extent of failure using the

ping ipv6 command.

A physical failure message exists.

see the manual "Message Log Reference"and

perform the action described in [Action]

associated with each log message.

Go to "3.4 Network Interface

Communication Failure."


Communication between the
Communication between the	Communication between the
neighboring host and router	remote host and router is
is disabled.	disabled.



		Unicast communication


					The route
Verify the status of			Verify the route
		Solved
address resolution			information using the		information
					exists.

using the show ipv6			show ipv6 route
neighbors command.			command.

	Unresolve
				No route information exists or the
				next hop address is invalid.

Verify RA address

distribution.

Distributed Not distributed


Verify the IP network of
Verify the IP network of	Analyze the failure on each	Verify the filter	Verify the RA
remote system. Otherwise, go	Analyze the failure on each	Verify the filter	Verify the RA
remote system. Otherwise, go	routing protocol. (RIPng,	settings.	settings.
to "3.4 Network Interface	routing protocol. (RIPng,	settings.	settings.
to "3.4 Network Interface	BGP4+, etc.)
Communication Failure."	BGP4+, etc.)
Communication Failure."

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.

NEC IP8800/S6700, IP8800/S6600, IP8800/S3600, IP8800/S2400 manual IPv6 Network Communication Failure

Models: IP8800/S6700 IP8800/S3600 IP8800/S6600 IP8800/S6300 IP8800/S2400