ROUTER
Router is a device that has an ability
of forward packets of data along the network by using the network protocol.
Router facilitate the communication into
the number or group of people along the same network such as it connect at least
two networks such as two LANs or WANs or a LAN and its internet service provider
Routers are located at gateways the places where
two or more networks connect.
Routers may also be used to connect two
or more logical groups of computer devices known as subnets, each with a
different sub-network address.
In packet-switched networks such as the Internet, a
router is a device or, in some cases, software in a computer, that determines
the next network point to which a packet should be forwarded toward its
destination
The router is connected to at least two networks and
decides which way to send each information packet based on its current
understanding of the state of the networks it is connected to.
An Edge Router is a router that interfaces with an
asynchronous transfer mode (ATM) network. A brouter is a network bridge
combined with a router.
Multiple routers are used in interconnected
networks, the routers exchange information about destination addresses using a
dynamic routing protocol.
A router has interfaces for different physical types
of network connections, such as copper cables, fibre optic, or wireless
transmission.
Application
Access
The access point of the router can be at home and
office where the user is closely to the same network protocol and can access
with the great speed and performance according to the network capability
The higher-speed and performance is facilitated with
satellite, or DSL, a router can act as a hardware firewall
Router has an ability of distribute the traffic from multiple access routers and collect the data stream to the required destination
Distribution routers are often responsible for enforcing quality of service across a WAN, so they may have considerable memory installed, multiple WAN interface connections, and substantial onboard data processing routines.
Core
The core routers perform the major function of interconnecting the distribution router from multiple building or large enterprise location and tend to optimized high bandwidth of a collapse backbone.
This will assure the network connection is available all they time and give signal when is weak.
Security
Router assure there is a security in the traffic of signals networks where there is no intrudes hack the system and access the communication. This is done by provide the path parameter protocols to be decoded. There is encrypted of the signals time after time also security is maintained when it seems there is leakage of information’s.
Benefits of Built-In Router Security
- Gain additional protection without deploying new hardware: Enable new network security features on your existing routers. The protection lead to assure there is no lost or misuse of data
- Boost security where you need it most : Apply security functions, such as firewall and IPS, anywhere in the network, including remote branches.
- Save time and money : Reduce the total number of devices in your network, which decreases ongoing support and manageability costs
A router has two stages of operation
called plane
- Control plane: A router maintains a routing table that lists which route should be used to forward a data packet, and through which physical interface connection.
- Router assure all traffic are controlled after learning router using dynamic routing protocol
- Static and dynamic routes are stored in the Routing Information Base (RIB). The control-plane logic then strips the RIB from non-essential directives and builds a Forwarding Information Base (FIB) to be used by the forwarding-plane.
- Forwarding plane: The router forwards data packets between incoming and outgoing interface connections. It routes them to the correct network type using information that the packet header contains.
- It uses data recorded in the routing table control plane
No comments:
Post a Comment