Installation

Connecting the Probe

Verify that the Modem Init String is properly initialized for the attached modem by referencing the modem’s documentation. The probe’s default modem initialization string is configured to work with low-speed and medium-speed Hayes compatible modems. The following modem settings are recommended for low-speed to medium-speed modem connections:

 

Modem Flow Control:

Off

 

Data Compression (if applicable):

Off

 

Error Correction (if applicable):

Off

 

Not all Hayes commands are the same for all Hayes-compatible modems. Refer

 

to your modem’s documentation to determine the commands required for each of

 

the above settings and append these commands to the end of the default Modem

 

Init String.

 

 

 

NOTE

Your modem’s documentation discusses the features that are relevant to your

 

modem. If your modem does not support a feature (data compression, for

 

example), you do not need to turn it off in the Modem Init String.

Some modems require you to set register values explicitly, rather than sending Hayes style commands. In this case, follow your modem’s documentation to set these registers.

If you are using a high-speed modem, you probably need to modify the default modem initialization string. The following modem settings are recommended for high-speed modem connections:

Modem Flow Control:

Hardware Flow Control (RTS/CTS signaling)

Carrier Detect:

Always On

Data Compression:

Enabled

Error Correction:

Enabled

After appending the appropriate commands to the modem initialization string, warm start your LanProbe.

Refer to your NetMetrix documentation for information on how to establish communications with LanProbe over the SLIP link.

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IBM 4986B LanProbe manual Init String
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4986B LanProbe specifications

The IBM 4986B LanProbe is a sophisticated network diagnostic tool that plays a crucial role in the maintenance and optimization of computer networks. Known for its advanced features and robust performance, the LanProbe is specifically designed to assist network administrators in monitoring, analyzing, and troubleshooting network issues efficiently.

One of the main features of the IBM 4986B LanProbe is its ability to capture and analyze network traffic in real time. This capability is essential for identifying bottlenecks, diagnosing connectivity problems, and overseeing data transfers across the network. The device employs advanced packet sniffing technology, allowing it to interpret various communication protocols within the network environment. This functionality enhances the speed and accuracy of network diagnostics, ensuring that administrators can quickly respond to issues as they arise.

The LanProbe is equipped with a user-friendly interface that simplifies the process of navigating its numerous features. It includes visual graphs, charts, and data logs that present network activity in an easily digestible format. This intuitive design is beneficial for both seasoned network engineers and less experienced users. Furthermore, the device supports a variety of operating systems, making it versatile and adaptable to different network infrastructures.

Another significant characteristic of the IBM 4986B is its compatibility with various networking technologies, including Ethernet, Token Ring, and WLAN. This flexibility enables the LanProbe to function effectively in diverse environments, providing comprehensive visibility into both wired and wireless segments of a network. Additionally, it supports multiple network topologies, allowing administrators to perform checks across various configurations with ease.

The device also offers logging capabilities, enabling users to store historical network data for later analysis. These logs can be invaluable for identifying recurring issues, generating reports, and conducting strategic network planning. Security features such as access control and auditing help ensure that only authorized personnel can view sensitive network information, thus safeguarding the integrity of the system.

In conclusion, the IBM 4986B LanProbe is a powerful tool that combines advanced diagnostic capabilities with user-friendly features. Its ability to monitor, analyze, and troubleshoot various networking technologies makes it an indispensable asset for network administrators. With its robust performance and versatile compatibility, the LanProbe continues to be a vital component in the efficient management of modern network infrastructures.
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