router definition
Article elements
1 Router
2 working levels of the router
3 types of routers
4 divisions of routers
1 Router A router is a device that is a means or tool for connecting a group of networks, and thousands of routers and servers are connected to each other to form a whole the World Wide Web. The router consists of Layer 3 Inspection Model (OSI), and plays an important role in Organizing and defining the tables, and directing their paths that they take in the transformation between groups, and this requires merging between second and third layer transformers and above.
A router is defined as a device or network that consists of software and equipment that are used to connect subnets, using wired and wireless signals. Routers are commonly used in wide area networks (WANs), and the third layer of the Network Layer is the main operator of the Internet.
2 Router working levels
At the control level, the router looks for the best path that signals can take in order to direct information to the receiving server.
Passing and Transfer Level: Controls the actual transfer of information and data received from the router that had been selected in earlier stages.
3 Router types
Routers are classified into several categories according to size and service provided, namely: Routers for small businesses or homes.
Routers for large businesses, one of the most popular types of routers are Cisco routers.
4 Routers Sections Cisco Routers Sections:
The router consists of the Mother Board, and the internal parts and the CPU are placed on it as well, and the internal pieces that are placed next to the CPU on the motherboard are:
Read Only Memory:
The ROM contains the source code that performs a set of main tasks, and it includes four basic components:
Power on Self test. Bootstrap. Mini IOS. ROM Monitor. Falsh Memo
Falsh Memory, used to save compressed copies of files in the Cisco IOS system, and a single file is stored in its memory, and the sizes of this type of memory vary according to the string or wave type.
Random access memory (RAM), this type of memory is considered removable, and it cannot be relied upon to keep data permanently, and it provides the user with an interface to be dealt with that contributes to a direct impact on the router’s work and performance, and the state of the random access memory can be detected by entering the command Show Running Configuration. Non-removable NVRAM. The user interface is a link between multiple interfaces, and works to connect all interfaces in the network with other networks, and the router in turn works to send and transfer data between networks.
kadi mohamed 2 oct 2021
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