Checking layer 2 network | NEC IP8800/S6600, IP8800/S3600 manual

3.Troubleshooting Functional Failures in Operation

communication to the other party cannot be verified with the ping command, use ping to check communication toward clients starting from the system closest to this system. For an example of issuing ping and how to interpret the result, see the manual "Configuration Settings."

3.If the server and the client are directly connected, check the HUB and cable connections.

4.Depending on the extent of failure detected by the ping command, that is the neighboring system or remote system, proceed to the next step in the failure analysis flow.

(d) Checking route information

Check the route information acquired by this system if communication is not possible even when the address resolution with the neighboring system is achieved, or if communication is disabled in the midway to the other party, or if the route to the other party is abnormal. Use the following procedure:

1.Log in to the system.

2.Execute the show ip route command to check the route information acquired by this system.

(e) Checking filtering/QoS setting information

Only certain packets may have been discarded by filtering, or packets may have been discarded through bandwidth monitoring, discarding control, or shaper of the QoS control.

Check to see if the conditions of filtering and QoS control in the configuration have been set up correctly and if bandwidth monitoring, discarding control, or shaper has been set up appropriately for system operation in system configuration, on this system and on the relay equipment located between the client and server. For the procedure, see "3.23.1 Checking Filtering/QoS Setting Information."

(f)Checking layer 2 network

If no setting error or failure is found in steps (a) to (e), the layer 2 network may have problem. Check the layer 2 network, referring to "3.5 Layer 2 Network Communication Failure"

3.6.3DynamicDNS Cooperation in DHCP Function Is Disabled

(1)DHCP server communication trouble

Following are three possible causes for DHCP server communication failures.

1.Configuration error

2.Network configuration has changed

3.DHCP server failure

First, check 1 above. This section describes configurations that are easily misconfigured. For 2 above, check for the differences in the network configuration provided before and after the change. Check for any difference disabling communication. If the DNS server/DHCP server settings (network card setting, cable connection, etc.) have been confirmed to be normal, and if the configuration and network configuration are correct but IP communications are unavailable because IP addresses cannot be assigned to clients, as described in 3 above, see "(b)Checking time information" through "(f)Checking filtering/QoS setting information" for details.

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

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/S6600 DynamicDNS Cooperation in Dhcp Function Is Disabled, Checking layer 2 network

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