Manuals / NEC / Computer Equipment / Network Hardware

NEC IP8800/S6600 Problems on Operation Terminal, Problems and Actions When Connecting to Console

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

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3. Troubleshooting Functional Failures in Operation

3.3Problems on Operation Terminal

3.3.1Unable to Input/Display from the Console Correctly

When there is a problem connecting to the console, follow the instruction in "Table 3-3: Problems and Actions When Connecting to Console."

When there is a problem connecting to the modem, follow the instruction in "Table 3-4: Problems and Actions When Connecting to Modem." Also, see the manual provided with the modem.

Table 3-3: Problems and Actions When Connecting to Console

No.

Failure

 

Troubleshooting Steps

 

 

 

1

Nothing is displayed on the

Determine the cause by following the steps below:

 

screen.

1.

Check if the ST1 LED on the front panel of the system lights in green. If it is not, see

 

 

 

"1.2 System and Partial Failure Analysis Overview."

 

 

2.

Check to see if the cable is connected correctly.

 

 

3.

Confirm that RS232C cross cable is used.

 

 

4.

Confirm that communication software settings, including port number, communication

 

 

 

rate, data length, parity bit, stop bit, flow control are set as follows:

 

 

 

Communication rate: 9600 bps (or a custom value)

 

 

 

Data length: 8 bits

 

 

 

Parity bit: None

 

 

 

Stop bit: 1 bit

 

 

 

Flow control: None

 

 

 

2

You cannot enter any key.

Determine the cause by following the steps below:

 

 

1.

Data sending/receiving may be interrupted by the XON/XOFF flow control. Restart the

 

 

 

data sending/receiving (press [Q] key with the [Ctrl] key pressed). If the problem

 

 

 

continues, follow the instructions on No.2 and later.

 

 

2.

Check to see if the communication software is configured properly.

 

 

3.

The screen may be suspended by [Ctrl]+[S]. Press any key.

 

 

 

3

Abnormal characters are

Negotiation with the communication software may have failed. Check the communication

 

displayed upon login.

rate of the communication software as described below.

 

 

1.

If the communication rate for the CONSOLE (RS232C) has not been set up using

 

 

 

configuration command line console 0, check to see if the communication rate is

 

 

 

set to 9600 bps in the communication software.

 

 

2.

If the communication rate for the CONSOLE (RS232C) is set to 1200, 2400, 4800, 9600

 

 

 

or 19200 bps using configuration command line console 0, confirm that the

 

 

 

communication rate in the communication software has been correctly set.

4

Abnormal characters appears

Communication rate for the CONSOLE (RS232C) may have been changed. See No. 3.

 

while entering user name.

 

 

 

 

 

5

Login is disabled.

Confirm that the login prompt appears on the screen. If it is not the case, starting up the

 

 

system is on the way. Wait for a while.

 

 

 

6

Abnormal characters appear and

If the communication rate of the communication software is changed after login, normal

 

command entry is rejected when

display is not achieved. Reset the communication rate of the communication software to the

 

the communication rate of the

original setting.

 

communication software is

 

 

 

changed after login.

 

 

 

 

 

7

Abnormal characters appear

Negotiation with the communication software may have failed. See No. 3. Issue a break

 

upon login with HyperTerminal.

signal using [Alt]+[B]. Depending on the communication rate in HyperTerminal, login

 

 

screen may not appear until you issue several break signals.

 

 

 

8

Item names and contents are not

The size of information might be too large to display within one line. Change the screen size

 

displayed in line.

by setting the communication software and increase the number of characters that can be

 

 

displayed in one line.

 

 

 

 

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NEC IP8800/S6600, IP8800/S3600 manual Problems on Operation Terminal, Unable to Input/Display from the Console Correctly
Page 84 Page 86

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.