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Cabling the System 2-9
2
Table 2-1 lists the cabling limitations for Ethernet.
Figure 2-9 shows an example of a typical network setup. The Ultra Enterprise
6000/5000/4000 systems can be any server shown in this figure.
Figure 2-9 Ethernet Cabling Length — Example Using N-type Cable
Table 2-1 Ethernet Cabling Limitations for N-type Coaxial Cable
Cable Segment Length in Meters
Allowed contiguous length of cable segments 23.4
70.2
117.0
500.0
1
1. Finite lengths(as constrainedby transmissionline phenomena).Minimum length= 23.4M;maximum =500M.
If cablefalls shorterthan oneof thesevalues, addcable toachieve next-highestvalue.
Distance between transceivers (multiples-of) 2.5
2
2. Transceivers are placedat intervals of2.5 meters,or multiplesof 2.5meters alongthe Ethernetcable.
Example: transceiversare connected2.5 metersapart, not2.0 meters.
Example: transceiversare connected15 metersapart (6multiples of2.5 meters),not 14.0meters.
Minimum length of Ethernet coaxial cable segments 23.4
Maximum length of transceiver “drop” cable 50.0
Minimum length of twisted pair cable no minimum
Maximum length of twisted pair cable 110
Note: 5 Meters + 15 Meters + 3.4 Meter Extension = 23.4 Meters minimum length allowed.
5 Meters
Terminator
15 Meters
Server or workstation
Transceiver
Transceiver drop cable
Twisted pair cable
Transceiver Transceiver
Server or workstation Server or workstation
3.4 Meter
Extension