This illustrates the flow of packets through a routed network using the example of an e-mail message being sent from… Read More

Routing is the process of finding a path to a destination host and of moving information across an internetwork from… Read More

By default, routing protocols such as RIP exchange routing tables every 30 seconds. If placed as calls, these routine updates… Read More

Wide - Area Network Requirements  - Minimize bandwidth costs - Maximize efficiency - Maximize performance - Support new/emerging applications - Maximize availability - Minimize management and maintenance Manage Bandwidth to Control… Read More

Analog services are the least expensive type of service. ISDN costs somewhat more but improves performance over even the fastest… Read More

X.25 Devices X.25 networks implement the internationally accepted ITU-T standard governing the operation of packet switching networks. Transmission links are… Read More

Leased Line Leased lines are most cost-effective if a customer’s daily usage exceeds four to six hours. Leased lines offer… Read More

Transmission Options or WAN Services There are a number of transmission options available today. They fall either into the analog… Read More

Circuit Switching  - Dedicated physical circuit established, maintained, and terminated through a carrier network for    each communication session - Datagram and data stream… Read More

So, what is a WAN? A WAN is a data communications network that serves users across a broad geographic area… Read More