D-Link 2624ix - Hub - Stackable User Manual - Connectivity Rules

Making Connections

23

Connectivity Rules

Ethernet (10Mbps) networks have the following connectivity rules:

♦

The maximum length of a twisted-pair cable segment is 100 meters.

Cabling should be Category 3 or better.

♦

Between any two end-stations in a collision domain, there may be up

to five cable segments and four intermediate repeaters (hubs, hub

stacks, or other repeaters).

♦

If there is a path between any two end-stations containing five seg-

ments and four repeaters, then at least two of the cable segments must

be point-to-point link segments (e.g., 10BASE-T or 10BASE-FL),

while the remaining segments may be populated (mixing) segments

(e.g., 10BASE-2 or 10BASE-5).

Fast Ethernet (100Mbps) networks have the following connectivity rules:

♦

The maximum length of a twisted-pair segment (that is, the distance

between a port in the hub to a single-address network device such as a

PC, server, or Ethernet switch) is 100 meters.  Cabling and other wir-

ing should be certified as Category 5 UTP or shielded twisted-

pair(STP).

♦

The maximum diameter in a collision domain is about 205 meters us-

ing two Class II hubs (or hub stacks).

♦

Between any two end-stations in a collision domain, there may be up

to three cable segments and two Class II hubs or hub stacks.