3. Troubleshooting Functional Failures in Operation

(6) Checking unicast routing 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 during IPv4 unicast communication, 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.

3.For IP8800/S6700, IP8800/S6600, and IP8800/S6300, check to see if packets are discarded because of the Null interface. If the route information sending interface resulting a communication failure is null0, packets are discarded because of the Null interface. Review the setting conditions for the static routing function in the configuration.

4.Go to "3.7 IPv4 Unicast Routing Communication Failure" if the route information on the failed interface is missing in the route information acquired by this system or if the next hop address is invalid.

5.If the route information acquired by this system contains the route information on the failed interface, the following functions set for the interface may have problem. Check these functions.

•DHCP/BOOTP function

Go to "(7)Checking DHCP/BOOTP setting information."

•Filtering/QoS function

Go to "(8)Checking filtering/QoS setting information."

(7) Checking DHCP/BOOTP setting information

When the relay function or the server function of DHCP/BOOTP on this system provides IP addresses to the neighboring system, there is possibility that IP addresses are not correctly assigned to the neighboring system.

Check to see the settings of the relay function or the server function. For the procedure, see "3.23.1 Checking Filtering/ QoS Setting Information."

(8) Checking filtering/QoS setting information

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. Review 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. For the procedure, see "3.23.1 Checking Filtering/QoS Setting Information."

(9) Checking option license OP-NPAR [OP-NPAR]

If no information is displayed by the show ip interface command though the interface is set to VRF interface and configured, there is possibility that option license OP-NPAR is unregistered or invalid. Check the status of option license on this system by using the show license command.

1.Log in to the system.

2.Check to see the license software and the enabled options by using the show license command.

3.If OP-NPAR does not appear in the license software, it indicates any license key for OP-NPAR has not been registered yet. Register the license key for OP-NPAR.

4.When OP-NAPR is displayed in license software but it is not displayed as an enabled option, the hardware configuration of this system might not support OP-NPAR. Review the hardware configuration. For more information about the hardware configuration, see the manual "Configuration Settings, Vol. 1."

5.When this system hardware configuration supports OP-NPAR but the OP-NPAR is not displayed as an enabled option, use the reload command to restart the system, which will enable the option license.

6.When OP-NPAR appears as an enabled option, see step 4 or later in "(2)Checking interface status."

53

Page 114 Page 116
Page 115
Image 115
NEC IP8800/S6600, IP8800/S3600, IP8800/S2400 Checking unicast routing information, Checking DHCP/BOOTP setting information
Page 114 Page 116

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.
Top Page Image Contents