"Thin Ethernet (10base2)"

Cavo coassiale RG58

 

 

 

IL connettore a T deve essere collegato direttamente al
BNC della scheda di rete
il collegamento del PC al centro della figura è errato
Collegamento giusto
Sol
"Repeater",
which allows to connect the
remote located system on its
own segment, which need
to have its own terminators.


So, a more realistic view on an installation is:

The cable swings from system to system (it is NOT allowed to put in "junctions" , to connect for example 3 PC's in a Y-configuration).

At the end of the cable, the coax-cable MUST be terminated, using a BNC 50 ohm terminator.


There are 2 different type of terminators:



Limitations:

each connection to an Thin-Ethernet RG-58 cable is called a "node", which can be a system like a PC, a UNIX-workstation or a Fileserver, but also anything else connecting via a BNC-connector counts a a node (network printers, repeaters,....).
- maximum 30 nodes on one Thin-Ethernet segment
- minimum 0.5 meter distance between nodes
- maximum total cable-length of 185 meter

If more than 30 nodes need to be connected or if the total cable-length needs to be longer
than 185 meters, a repeater is the solution:

Multi-Segment network:
For each cable-segment, you need to be within the 10base2 limitation (max. 185 meter, 30 nodes), but this box called "Repeater" connects now the 2 (or even more) segments (some Multi-port repeaters can connect 4 or even 8 cables), which in view of the users extends the cable-length beyond the 185 meters. More than 1 repeater can be used in a network, but there are limits (see Large Networks: 5-4-3 Rule). On very large networks, it will be required to install Switches to optimize network utilisation.