GEM-CAR run on a  Wired infrastructure for

  • Stability : no interferrance electronical equipment in the shop
  • Speed :  wired is 100 Mbps to 1 Go  /  wireless is up to 54 Mbps

Installation

Ethernet cables must be run from each computer to another computer or to the central device. It can be time-consuming and difficult to run cables under the floor or through walls, especially when computers sit in different parts of the garage.

The correct cabling configuration for a wired LAN varies depending on the mix of devices, the type of Internet connection, and whether internal or external modems  areused. However, none of these options pose any more difficulty than, for example, wiring a home theater system.

After hardware installation, the remaining steps in configuring either wired or wireless LANs do not differ much. Both rely on standard Internet Protocol and network operating system configuration options. Laptops and other portable devices (bar code reader / label printer) often enjoy greater mobility in wireless network installations (at least for as long as their batteries allow).

Cost

Ethernet cables, hubs and switches are very inexpensive. Some connection sharing software packages, like ICS, are free; some cost a nominal fee. Broadband routers cost more, but these are optional components of a wired LAN, and their higher cost is offset by the benefit of easier installation and built-in security features.

Reliability

Ethernet cables, hubs and switches are extremely reliable, mainly because manufacturers have been continually improving Ethernet technology over several decades. Loose cables likely remain the single most common and annoying source of failure in a wired network. When installing a wired LAN or moving any of the components later, be sure to carefully check the cable connections.

Broadband routers have also suffered from some reliability problems in the past. Unlike other Ethernet gear, these products are relatively new, multi-function devices. Broadband routers have matured over the past several years and their reliability has improved greatly.

Performance

Wired LANs offer superior performance. Traditional Ethernet connections offer only 100 Mbps bandwidth, but 1 Go Fast Ethernet technology costs little more and is readily available. Although 1 Go bps represents a theoretical maximum performance never really achieved in practice, Fast Ethernet should be sufficient for home file sharing, using GEM-CAR, and high-speed Internet access for many years into the future.

Wired LANs utilizing hubs can suffer performance slowdown if computers heavily utilize the network simultaneously. Use Ethernet switches instead of hubs to avoid this problem; a switch costs little more than a hub.

Security

For any wired LAN connected to the Internet, firewalls are the primary security consideration. Wired Ethernet hubs and switches do not support firewalls. However, firewall software can be installed on the computers themselves. Broadband routers offer equivalent firewall capability built into the device, configurable through its own software.