[LIST][*]Ethernet It is a LAN interface. Some of the models have an RJ45 port for 10baseT or 10/100. And some other have a 15 pin female connector AUI(Attachment Unit Interface).[/LIST]
2. Serial It is a 60 pin female WAN interface for leased line
3. BRI/PRI It is a RJ45 WAN interface for ISDN
4. Async It is a 37 pin female connector for dial ups.
5. Console It is a RJ45 Connector used to configure the Router for the first time.
6. Auxiliary RJ45 Connector for remote access administration.




Routers:
Tow Type Of router:
(Modular – Fixed )
Modular Routers:
These type of routers have up gradable slots, and the number of ports can be increased just by adding cards in the slots.
Fixed Routers
These types of routers have fixed number of ports.
Cisco Router’s Series
Cisco 700, 800, 1600, 1700, 2500, 2600, 3600, 4000, 5000, 7000,10000, 12000.
Fixed
700, 800,….2500
Modular
2600,….., 12000
Note.. 1750 & 1751 exceptionally are Modular Routers

سورى يا جماعه انا لسه هكمل ان شاء الله الموضوع بس مشغول شويه بس ان شاء الله على بالليل هكمله.