Hardware Reference

Fast EtherHub-12se User’s Guide

Statistical Display for System Performance

8WLOL]DWLRQ'LVSOD\0RGH - (8WLOL]DWLRQ) The statistical indicators show the percentage of valid data passing through each port compared to overall network bandwidth (updated every 0.5 seconds). There are 5 LEDs representing the percentage of network utilization. The corresponding LEDs light up to show that the utilization of LAN bandwidth has reached this percentage. When active, these LEDs behave like a stereo’s equalizer display.

For example, if network utilization reaches 1%, the LED labeled 1% will light up. However, if network utilization rises above 1% (e.g., 30%), the LED labeled 30 and all the other LEDs before it (i.e., 1, 5 and 15) will also light up in rapid succession. These indicators monitor the share of valid network frames handled by each port within a 100 Mbps bandwidth. They provide a quick way to monitor the current traffic load relative to the network’s capacity.

&ROOLVLRQ'LVSOD\0RGH (&ROOLVLRQ)- The statistical indicators show the percentage of packet collisions occurring out of the total packets transmitted by the port. Collisions occur when two or more devices connected to a hub attempt to transmit data simultaneously on the network. When a collision occurs, devices pause and then re-transmit after a pseudo-random wait period. Because wait periods differ among devices, successive collisions become increasingly improbable.

The Collision LEDs assist the network manager in monitoring the percentage of packet collisions occurring relative to the total packets transmitted by each port. The collision indicators are labeled by row to indicate the percentage of collisions encountered by the corresponding port. When collisions reach a level marked on the front panel display, the corresponding LED lights up. For example, if packet collisions reach 1%, the LED labeled 1% will light up. However, if collisions go beyond 1% (e.g., 15%), the LED labeled 15+% and all the other LEDs before it (i.e., 1, 3, 5 and 10) also light up in rapid succession.

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12se specifications

Accton Technology, a prominent player in the networking industry, has developed a range of high-performance switches designed to meet the demands of modern network infrastructures. Among their notable products are the EH3012C and EH3008C switches, equipped with advanced features that cater to various networking needs.

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