CRC (cyclic redundancy check)

An error detection scheme used by the probe to ensure that packets received by the probe have not been corrupted during transmission from the source node.

CSMA/CD (Carrier Sense Multiple Access/Collision Detection)

The network access-control mechanism that is based on collisions and utilized by Ethernet networks. On contention-based networks, like Ethernet networks, each station must detect an idle network prior to transmitting. If more than one station transmits simultaneously, a collision occurs, all stations are notified, and the colliding stations try retransmitting after waiting a random amount of time.

Default Gateway Address

The address of the gateway which is closest to the probe.

DRAM

Dynamic Random Access Memory, which is the main memory of LanProbe.

Ethernet

A LAN developed by Xerox Corp., Digital Equipment Corp., and Intel Corp. It uses the CSMA/CD method of access and transmits at 10 Mbit/s on a bus topology. The IEEE 802.3 standard evolved from Ethernet, but they are not exactly the same. Network devices based on both standards can co-exist on the same medium, but they cannot exchange data directly without special, “bilingual”, software that can decode packets of both types.

Extended LAN

A network consisting of two or more LANs that are connected by bridges, routers, or other similar devices. Resources on the LANs can be accessed by users on any of the LANs. See also LAN.

Flash EPROM

EPROM that can be erased and reprogrammed while installed in a circuit.

Gateway

A dedicated computer that is used to route frames from one dissimilar network to another.

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IBM 4986B LanProbe manual CRC cyclic redundancy check, CSMA/CD Carrier Sense Multiple Access/Collision Detection, Ethernet
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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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