3. Troubleshooting Functional Failures in Operation

Figure 3-7: Failure Analysis Procedure When IPv4 Communication Disabled

<IPv4 communication is disabled.>

Verify if there is a line failure log message.

No line failure log message exists.

 

 

 

 

 

 

A line failure log message exists.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

See the manual"Message Log Reference"and

 

 

 

Check the Up/Down status of the interface.

 

 

 

 

 

 

perform the action described in [Action]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

associated with each log message.

 

 

 

 

 

 

 

 

VRF interface is not displayed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

up

 

 

 

 

 

 

 

 

Confirm Option License OP-NPAR.

 

 

 

down

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to "3.4 Network Interface Communication

 

 

 

 

 

 

 

 

 

 

 

Failure."

 

 

 

 

 

 

 

 

 

 

 

 

Identify the extent of the failure using the ping

 

 

 

 

 

 

 

 

 

 

command.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Communication between remote host and router is disabled.

Communication between the neighboring host and router is disabled.

Verify the status of address resolution using the show ip arp command.

Solved

Unresolved

 

 

Verify the route information using the show ip route command.

 

 

 

 

 

 

No route information

 

 

 

 

 

 

 

 

exists or the next hop

 

The route

address is invalid.

 

information exists.

 

 

 

 

 

 

 

 

 

 

 

 

Verify the IP network of remote system. Otherwise, go to "3.4 Network Interface Communication Failure."

Go to "3.6.2 IP Addresses Cannot Be Assigned Using DHCP Function" and "3.23.1 Checking Filtering/QoS Setting Information."

Go to "3.7 IPv4 Unicast Routing Communication

Failure"

(1) Checking log

Communication may be interrupted by a line failure (or damage). The following procedure displays hardware error messages among this system's log messages.

For details about the log, see the manual "Message Log Reference."

1.Log in to the system.

2.Display the log using the show logging command.

3.The date and time when an error occurred are displayed in the log. Check to see if a log was displayed at the date/ time when communication was disabled.

4.For detailed information about the failure in the log displayed at the time and date of the communication interruption and the actions for failures, see the manual "Message Log Reference." Follow the instruction.

5.If there is no log recorded at the time and date when communication was disabled, go to "(2)Checking interface status."

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NEC IP8800/S6700, IP8800/S6600, IP8800/S3600, IP8800/S2400, IP8800/S6300 manual Checking log, Route
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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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