Cisco Case Study

Network Characteristics

A network is defined as “a logical grouping of networks.” The Internet and other related networks are made possible due to the devices that Cisco produces (primarily network routers and switches). In fact, it was Cisco’s founders that invented the multi-protocol router enabling the possibility of a global network (Internet).

“Routers and switches were at the heart of Cisco’s business.” Computer networks, switches, and routers are analogous to the way the U.S. Postal System works in relation to their core functions.

Network Switches

A network switch is a computer networking device that connects network segments. It has little “intelligence” compared to other advanced high-end network devices (routers and firewalls). It is used primarily for network data transmission and performance optimization. Analogous to post offices, it forwards network information (similarity mail envelope) to the intended computer device (similarity mail recipient).

Network Routers

A network router is a computer that also connects networks together, however, with greater “intelligence” than a switch. Its software allows for the optimization of network traffic. Similar to U.S. postal processing centers, routers forward information to the nearest switch (similarity post offices) based on availability and known performance metrics. Optimized destination paths are calculated in real-time (re-routing information based on the fastest known path).

Network Firewalls

Cisco firewalls are specialized network routers that inspect network traffic passing through it, and deny or permits passage based on a pre-defined set of rules. These rules are analogous to postal rules (i.e. weight/size restrictions) in which information will be blocked if certain required criteria is not met.

In essence, a computer network consisting of Cisco’s core components (switches, routers, and firewalls) are necessary for the interconnectivity and transmission of data from senders to recipients. As shown, computer networks function very similarly to that of the U.S. Postal system and its related infrastructure (post offices, postal processing centers, and postal rules). Both systems work similarly to transport information.

Cisco Network Products

Cisco produces a host of network software and hardware devices. However, it is most well-known for their router and switch devices. Cisco’s main line of switches is known as the Catalyst Series. These router and switch products ranged from the low hundred dollar mark to the multi-million dollar price range. Of course, price range was usually attributed to the capability, purpose, and sophistication of these technical hardware devices.

In order to meet its internal 20%