Introduction to Cisco IOS :-
IOS (Internetwork Operating System) is the software used on Cisco routers and Switchea.
Types of Routers:-
There are 3 types of Routers:
- Branch Routers
- Routers used by small organizations.
- Used for end user connectivity.
- Router Series :800, 1800, 1900, 2900 etc. series Integrated Services Routers (ISR).
2. Internet Edge Routers
- Routers which are used by the ISPs.
- Used for policy based routing and access control.
- Router Series : 1000, 7200 etc. Series Aggregation Services Router (ASR).
3. Service Provider Routers
- Routers which are used by the Global ISPs.
- Used for fastest switching across internet.
- Router Series : 900, 1000, 7200 etc. Series Aggregation Services Router (ASR).
Internet and external Connections of Router
There are internal and external Connections to a router.The external ports of a router are as follows:
Console Port
It is known as Local Administrative port. It is used for initial configuration and password recovery.
Auxiliary Port
It is known as Remote Administrative Port and used for remote administration.
Ethernet Port
It is used to connect computer, a local network and an external DSL or a cable moDem. There are three forms of Ethernet. They are:
- 10Base T: It is known as Ethernet.
- 100Base T: It is Fast Ethernet.
- 1000Base T: It is Gigabit Ethernet port.
Serial Port
It is known as WAN port
- Serial interface has DB60 connector (60 pins) in fixed routers.
- Smart Serial interface has DB60 connector in modular routers.
- It is used for connecting Remote Locations using V.35 cable, which ha 60 pins (male connector) at one end and 18 pins (male connector) at the other end.
- WAN encapsulations supported for a serial port are HDLC, PPP and Frame Relay.
Types of Memory on a Cisco Router.
RAM – Stands for Random Access Memory. It is a semiconductor-based memory, where the CPU or the other hardware devices can read and write data. It temporality stores the data and it is a volatile memory. Once the system turns off, it loses the data As a result. RAM is used as a temporary data storage area.
ROM – Stands for Read Only Memory.ROM is memory on a chip or multiple chips. It stores the data permanently and it is a non-volatile memory. H does not lose the data even after the system turns oft As a result ROM is a permanent data storage area the different types of ROM are.
Questions:-
RAM – Stands for Random Access Memory. It is a semiconductor-based memory, where the CPU or the other hardware devices can read and write data. It temporality stores the data and it is a volatile memory. Once the system turns off, it loses the data As a result. RAM is used as a temporary data storage area.
ROM – Stands for Read Only Memory.ROM is memory on a chip or multiple chips. It stores the data permanently and it is a non-volatile memory. H does not lose the data even after the system turns oft As a result ROM is a permanent data storage area the different types of ROM are.
Flash memory- Is the high-density device. It is a non-volatile memory. It is fast in reading and writing data. This is because it writes data in chunks or blocks. Flash memory is an electrically re-programmable device.
NVRAM- Is a memory that saves its stored data regardless if the power is on or off. Today, a good example of NVRAM is a flash memory like that used in a Jump drive. NVRAM is also in your computer monitor, printers, cars, smart cards, and other devices that require remembered settings.
NVRAM- Is a memory that saves its stored data regardless if the power is on or off. Today, a good example of NVRAM is a flash memory like that used in a Jump drive. NVRAM is also in your computer monitor, printers, cars, smart cards, and other devices that require remembered settings.
Questions:-
- Explain what is router
- What are the types of Routers
- Explain of Router port
- What are the different types of Memory
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