Connectivity Rules - D-Link DFE-2600 Series User Manual

Ethernet/fast ethernet dual-speed managed/unmanaged stackable hubs
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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) seg-
ments (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
wiring should be certified as Category 5 UTP or shielded twisted-
pair(STP).
The maximum diameter in a collision domain is about 205 meters
using 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.
Making Connections
25

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