3. Troubleshooting Functional Failures in Operation

No.

Troubleshooting Steps

Problem

Action

 

 

 

 

3

According to the failure

Line quality on

Check the type of fiber optics. For the fiber optics type, see "Hardware

 

statistical information displayed

sending side is

Installation Guide."

 

by the show interfaces

degraded.

 

 

Check the attenuation value if an optical attenuator is used. For the

 

command, check to see if the

 

 

 

optical level, see "Hardware Installation Guide."

 

statistical information below is

 

 

 

 

 

counted for the port. If counted,

 

Check the cable length. For the cable length, see "Hardware Installation

 

see "Problem" and "Action"

 

Guide."

 

columns. [IP8800/S6700]

 

 

 

 

Check to see if the cable is connected correctly. Check to see if end

 

[IP8800/S6600] [IP8800/

 

 

S6300]

 

surfaces of the cable are dirty. If they are dirty, remove the dirt.

 

• RF

 

Check to see if the transceiver is connected correctly.

 

 

 

 

 

 

 

For the transceiver, follow the segment standard on the remote system.

 

 

 

 

 

 

 

Check to see if the optical level is correct. For the optical level, see

 

 

 

"Hardware Installation Guide."

 

 

 

 

 

 

 

Perform the line test on this system and confirm that there is no problem

 

 

 

in the sending function. See the execution results of the no test

 

 

 

interfaces command and follow the indicated actions. For the test

 

 

 

type to be specified, see "6.1 Testing Line."

4

According to the failure

Packets with

Follow the jumbo frame setting on the remote system.

 

statistical information displayed

invalid frame

 

 

by the show interfaces

length are received.

 

 

command, check to see if the

 

 

 

statistical information below is

 

 

 

counted for the port.

 

 

 

If counted, see "Problem" and

 

 

 

"Action" columns.

 

 

 

• Long frames

 

 

 

 

 

 

5

Check to see if statistics in the

Packets are being

Review the system maintenance using discard control and shaper.

 

following is not counted by the

discarded.

 

 

show qos queueing

 

 

 

command. If it is counted, see

 

 

 

"Problem" and "Action"

 

 

 

columns.

 

 

 

• discard_pkt

 

 

 

 

 

 

3.4.6Communication Failure on Using PoE

If electricity is not provided when PoE is in use, isolate the problem using the failure analysis methods listed in the following table.

Table 3-12: Communication Failure Analysis Methods When PoE Is in Use

No.

Troubleshooting Steps and Command

 

Action

 

 

 

 

1

Check to see PoEStatus display on the port by

•

PoEStatus indicates off

 

the show power inline command.

•

Electricity is not provided. Go to No.2.

 

 

PoEStatus indicates denied

 

 

 

A shortage of electricity to the whole equipment occurs. Go to No.3.

 

 

•

PoEStatus indicates faulty

 

 

 

Electricity is unable to be provided to the connected equipment. Go to No.4.

 

 

 

 

2

Check to see if the port is shutdown.

•

The port is shutdown

 

 

 

Use the no shutdown command.

 

 

• The port is not showdown

 

 

 

Check to see if Power receiving equipment is connected properly.

 

 

 

 

35

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NEC IP8800/S2400, IP8800/S6600, IP8800/S3600 Communication Failure on Using PoE, Troubleshooting Steps and Command Action
Page 96 Page 98

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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