Introduction

The Ethernet LanProbe has 16 MB of memory (optionally 32 MB), and uses FLASH EPROM. Future upgrades to LanProbe’s firmware are easily downloaded over the LAN to multiple probes simultaneously. You can also download firmware using LanProbe’s serial port.

LanProbe maintains a variety of statistical measurements on network performance, continuously keeping track of traffic levels, errors, and other important trends. Alarm thresholds can be set on any of these parameters, immediately alerting the network manager or initiating a packet trace to capture the details of the event for later analysis. Traffic and error levels are also monitored per node for each station on the segment.

Private MIB extensions give LanProbe additional capabilities beyond RMON. Multiple SNMP trap addresses, or groups of addresses, can be defined for event notification. The probe maps MAC addresses to IP addresses for node identification, and provides duplicate IP address detection. A real time utilization variable has been added, which provides the ability to alarm on instantaneous peaks of network load. An additional Out-of-Band connection to the probe can be established using Serial Link Internet Protocol (SLIP), either directly, using a modem, or by using a data switch.

You can configure the LanProbe to perform Echo Test Monitoring (tests to verify communications) of network nodes from your network management station. LanProbe allows the network manager to select one or several nodes to perform a one-time test or specify an interval for periodic testing. You can view the results of the Echo Test Monitoring from your NetMetrix management console. This can be very useful for monitoring critical nodes to verify connectivity. This test can also be performed from several points on the network (using several LanProbes) to verify connectivity from each point. When a node becomes unreachable an alert can be sent from LanProbe to your management station. To provide testing of a large range of nodes, Echo Test Monitoring supports ICMP, IEEE 802.2, and IEEE 802.3 for Novell IPX. This extension is supported by the NetMetrix software.

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IBM 4986B LanProbe manual Introduction
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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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