Determining The Maximum Number Of Stations On A Ring; Selecting Appropriate Cable Lengths; Calculating Cable Lengths (Copper Wiring); Maximum Station Counts - 3Com CoreBuilder 5000 User Manual

2-4 D E
ESIGNING AND XPANDING THE
Determining the
Maximum Number
of Stations on a
Ring
Selecting
Appropriate Cable
Lengths
Calculating Cable
Lengths (Copper
Wiring)
N
ETWORK
The modules are connected to each other by one of the RI/RO trunk
pairs.
When you try to ping stations on the two media modules, unreliable
network information displays. You may not be able to pass data
between the two modules. Avoid this type of configuration.
If you have followed the lobe and trunk cabling guidelines in this
®
chapter, 3Com CoreBuilder 5000 Token Ring Modules support the
maximum number of stations listed in
Table 2-2

Maximum Station Counts

Ring Speed/Cable Type
4 Mbps UTP/STP
16 Mbps UTP/STP
This section describes the cable lengths for CoreBuilder 5000 Token
Ring Media Modules. It is divided into the following sections:

Calculating Cable Lengths (Copper Wiring)

Cabling Standards
3Com Lobe Cable Length Recommendations
Lobe Cabling Requirements
3Com Trunk Cable Recommendations
Determining Fiber Cable Lengths Using Alternate Fiber Diameters
This section describes considerations and assumptions you should use
for determining the cable lengths recommended in this chapter.
Considerations include:
Maximum Attenuation
Signal to NEXT Ratio
Transmitter Variation
Temperature
Table 2-2.
Active Ports Passive Ports
190 250
250 250