ZyXEL Communications DIMENSION ES-1124, User Manual

Dimension ES-1124 Ethernet Switch 

Getting To Know Your Switch 

1-3 

 
This revolutionized networking in a number of ways: 

• 

By allowing two-way, simultaneous transmissions over the same port (Full-
duplex), which essentially doubled the bandwidth.  

• 

Reducing the collision domain to a single switch-port, which eliminated the 
need for carrier sensing.  

• 

Using the store-and-forward technology’s approach of inspecting each packet 
to intercept corrupt or redundant data, switching eliminated unnecessary 
transmission that slowed the network.  

• 

By employing address learning, which replaced the inefficient receiving port. 

Auto-negotiation regulates the speed and duplex of each port, based on the 
capability of both devices. Flow-control allows transmission from a 100Mbps 
node to a 10Mbps node without loss of data. Auto-negotiation and flow-control 
may require disablement for some networking operations involves legacy 
equipment. Disabling the auto-negotiation is accomplished by fixing the speed or 
duplex of a port.  

Ethernet Switching Technology supplied higher performance at costs lower than 
other solutions. Wider bandwidth, no congestion, and the reduction in traffic is 
why switching is replacing expensive routers and inefficient hubs as the ultimate 
networking solution. 
 

1.5 Applications 

This section provides two network topology examples in which the switch is used.  
By using the uplink port, the switch can connect with another switch or hub to 
interconnect other workgroups to form a larger switched network. The distance between 
two switches via fiber cable can be up to 550 meters (multi-mode fiber) or 10 kilometers 
(single-mode fiber).  

1.5.1 Standalone 

Workgroup 

The switch can be used as a standalone switch to which, computers, servers and printer 
server are directly connected to form a small workgroup.