Sun Microsystems ultra enterprise 4000 Manuel D’Utilisation
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.
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
70.2
117.0
500.0
1
1. Finite lengths (as constrained by transmission line phenomena). Minimum length = 23.4M; maximum = 500M.
If cable falls shorter than one of these values, add cable to achieve next-highest value.
Distance between transceivers (multiples-of)
2.5
2
2. Transceivers are placed at intervals of 2.5 meters, or multiples of 2.5 meters along the Ethernet cable.
Example: transceivers are connected 2.5 meters apart, not 2.0 meters.
Example: transceivers are connected 15 meters apart (6 multiples of 2.5 meters), not 14.0 meters.
Example: transceivers are connected 15 meters apart (6 multiples of 2.5 meters), not 14.0 meters.
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
Extension