- Router capture the information that come through broadband connection via a modem and deliver to computer.
- It is used to convert the packets to another network interface, drop them and perform other action relating to a network.
- Router are multiport devices and more sophisticated as compare to repeaters and bridges.
- Router also supports filtering and encapsulation like bridges.
- They operate at physical, data link and network layer of OSI model.
Types of Routers:
1. Broadband Router:
- It is used to connect computer or to connect to the internet.
- If you connect to the internet through phone and using vice over IP technology then need broadband router.
- These are often a special type of modem (ADSL) that will have both Ethernet and phone jacks.
2. Wireless Routers:
- It create a wireless signal in your home or office.
- Any PC within range of wireless routers can connect it and use the internet.
- In order to secure the wireless router provide the username and password.
3. Edge Routers:
- It is placed at the edge of the ISP network.
- It is normally configure to external protocol like BGP to another BGP of other ISP or large organization.
4. Subscriber Edge Router:
- It is belongs to an end user organization.
- It is configured to broadcast external BGP to its providers.
5. Inter-Provider Border Router:
- This type of router is for interconnecting ISPs, this is a BGP speaking router that maintains BGP sessions with other BGP speaking routers in other providers.
6. Core Router:
- A router that resides within the middle or backbone of the LAN network rather than at its periphery.
Advantages:
- It can connects different network architectures.
- Router can choose the best path across the network using dynamic routing techniques.
- It reduce the network traffic.
Disadvantages:
- It is work only with routable network protocol.
- More expensive than bridges or repeaters.
- It is slower than bridges and repeaters.
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