African Needs Network Engineers

Although there are a large number of skilled network professionals in the larger cities of Africa, that’s certainly not the case in the rest of the continent. Businesses have real difficulty in recruiting outside these main hubs as there are few professionals with the skills to setup and run large computer networks. Even when they are available, there is a great vulnerability that these staff will move and it will be impossible to recruit replacements.

The below few paragraphs explains some basic network address resolution techniques, knowledge that is essential in troubleshooting issues on any size network. However if you try and find a network professional capable of understanding these concepts in smaller African businesses you’ll be very lucky. Of course larger corporations will have access to these skills and indeed can train other local staff to the same level, yet for many businesses these people are almost impossible to recruit.

Even finding staff who are able to setup and configure remote VPNs can be difficult, never mind running the sort of internal residential address based proxies which are needed to securely access the internet.

Both logical and physical addresses are utilized for communication on a network. Making use of logical addresses allows for communication among multiple networks and indirectly connected devices. The use of physical addresses assists in communication on a singular network sector for apparatus that are specifically connected to each other with a switch. These two types of addressing must work together in order for communication to occur.

Contemplate a situation exactly where you want to communicate with a machine on your network. This device may be a server of some sort or simply one more work- station you need to share files with. The application you are actually utilizing to start the communication is already aware of the Internet Protocol address of the remote host (via DNS, dealt with elsewhere), meaning the system ought to have all it needs to build the layer 3 through 7 information of the packet it wants to transmit.

The sole piece of information it requires at this point is the layer 2 data link information containing the MAC address of the intended host. MAC addresses are required for the reason that a switch that interconnects devices on a network uses a Content Addressable Memory (CAM) table, which provides the MAC addresses of all devices connected to each one of its ports. When the switch receives traffic destined for a specific MAC address, it utilizes this table to recognize through which port to transmit the traffic.
If the destination MAC address is not known, the transmitting device will definitely first check for the address in its cache; in the event that it is not there, then it must be resolved through additional communicating on the network.

The resolution procedure that TCP/IP networking (with IPv4) uses to solve an IP address to a MAC address is called the Address Resolution Pr0t0e0l (ARP), which is defined in RFC 826. The ARP resolution process uses only two packets: an ARP request and an ARP response.

Additional: Understanding Residential Proxies