Hub-To-Hub Uplink - D-Link DSH-8 User Manual

crossed over.
When connecting a PC or a server, the system being connected should
have an Ethernet or Fast Ethernet network interface card with a
twisted-pair port.

Hub-to-Hub Uplink

You can link two hubs or a hub with a hub stack by using any of the
twisted-pair ports or the Uplink port. Linking hubs using ordinary
twisted-pair ports requires crossover twisted-pair cables; linking
using one ordinary twisted-pair port and the Uplink port requires an
ordinary straight-through twisted-pair cable. The Uplink port is
shared with Port 1, and you should not use both Port 1 and the
Uplink port at the same time.
When connecting two hubs or a hub with a hub stack in this fashion,
the maximum distance between any two end-stations in a collision
domain is 205 meters. If each link between the hub and an end-
station is 100 meters, then the hub-to-hub connection is limited to 5
meters. However, if the longest hub-to-end-station connection is less
than 100 meters, then the hub-to-hub connection can be up to 100
meters long as long as the 205-meter total network diameter rule is
followed.
The following table describes different methods of linking hubs (or
hub stacks):