ROUTER

ROUTER

 WHAT IS ROUTER?

1. This is a hardware device that routes data (hence the name) from a local area network (LAN) to another network connection.
2. A router acts like a coin sorting machine, allowing only authorized machines to connect to other computer systems.
3. Most routers also keep log files about the local network activity.
4. A Router is a device that connects two networks - frequently over large distances. It understands one or more network protocols, such as IP or IPX.
5.  A Router accepts packets on at least two network interfaces, and forwards packets from one interface to another.
6. Router's may be programmed to filter out some packets, and to dynamically change the route by which packets are routed.
7. Router's often use different media on each interface. For instance, a router might have one Ethernet port and one ISDN port.

Types of Routers

There are several types of routers in the market.

Broadband Routers

Broadband routers can do different types of things. Broadband routers can be used to connect computers or to connect to the Internet.

If you connect to the internet through phone and using Voice over IP technology (VOIP) then you need broadband router. These are often a special type of modem (ADSL) that will have both Ethernet and phone jacks.

Wireless Routers

Wireless routers create a wireless signal in your home or office. So, any PC within range of Wireless routers can connect it and use your Internet.

In order to secure your Wireless routers, you simply need to come secure it with password or get your IP address. Then, you'll log on into your router with the user ID and passwords will that come with your router.

Other Type of Router

Edge Router

This type of router are placed at the edge of the ISP network, the are normally configured to external protocol like BGP (Border gateway protocol) to another BGP of other ISP or large organisation.

Subscriber Edge Router

This type of router belongs to an end user (enterprise) organization. It’s configured to  broadcast external BGP to it’s provider’s AS(s)

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' ASes.

Core Router

A router that resides within the middle or backbone of the LAN network rather than at its periphery. In some instances , a core router provides a stepdown backbone , interconnecting the distribution routers from multiple building of a campus ( LAN), or Large enterprise Location (WAN). They tend to be optimized for a high brandwidth.

Wired and Wireless Routers.

Home and small office networking is becoming popular by day by the use of IP wired and wireless router.Wired and wireless router are able to maintain routing and configuration information in their routing table.  They also provide the service of filtering traffic of incoming and outgoing packets based on IP addresses.

Some wireless routers combines the functions of router with those of a network switch and that of a firewall in one.