Maximum Cable Distance - Allied Telesis AT-IS230-10GP Installation Manual

Chapter 1: Overview
Note
With the AT-IS230-10GP switch, you can disable Auto-Negotiation
and set the duplex modes manually via the switch management.
Speed and duplex mode settings can be set independently of each
other on the ports. For example, the speed of a port can be
configured manually while its duplex mode is established through
Auto-Negotiation.
Maximum Cable
The ports have a maximum operating distance of 100 meters (328 feet).
Distance
28