Contemporary Control Systems EISK Diagnostic Skorpion Switches 100T/H Installation Guide - Manual

EISK5-100T/H
Skorpion Diagnostic Switch for Protocol Debugging
Installation Guide
The EISK5-100T/H is designed as an aid in diagnosing Ethernet communication
issues and debugging software. This device has all of the features of a normal
switch except that
— like a repeating hub — it passes messages received by any port
to all other ports. This allows the activity of all ports
to be monitored by a ―sniffer‖
attached to any port
— an ability that would otherwise require the ―port mirror‖ function
of a more costly managed switch.
The five ports of the EISK5-100T/H offer features that traditional repeating hubs
do not. Each port supports Auto-MDIX
— so either straight-through or crossover
cabling can be used. The collision domain is terminated at each port
— so that a
network of EISK5-100T/H units has no cabling length limit
— except that each
segment cannot exceed the 100 m specification for Ethernet. Store-and-forward
operation mitigates against lost messages. Each port automatically negotiates
its data rate to 10 Mbps or 100 Mbps
— controlling data flow with the PAUSE
function in full-duplex links or with the backpressure method in half-duplex links.
Link integrity is monitored
— verifying that a working device is on the far end of a
segment. In addition to
the unit’s power LED, each port has two LEDs — one
showing link/activity/rate, and one showing duplex status.
The unit operates from low-voltage AC or DC power and is provided with a
writable label for easy identification of the remote device attached to each cable.