GarrettCom 14E manual Segment Distances, Half-duplex mode, Collision Domain PDV Calculations

Magnum14E Media Converters Installation and User Guide (10/02)

3.4.3Segment Distances, Half-duplex mode

Fast Ethernet shared bandwidth devices operate with multiple nodes in a traffic domain. When a node attempts to send a packet, it may hit another packet passing by, i.e., a collision may occur. This is normal and does not cause a problem because the Ethernet protocol provides for this situation and requires that the sender wait and try again. When installing the Magnum 14E in a half-duplex segment, it is important to consider the collision domain of the segment, including the 14E itself, repeaters and hubs present, and the lengths of both of the attached media types.

3.4.4Collision Domain (PDV Calculations)

A collision domain is defined in the IEEE 802.3u standard as a cluster of network devices that, regardless of topology, must be less than 512 BT (Bit Times) of signal delay

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