Cisco Router License

cisco router license

Cisco Router License

 

Cisco Router License is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets. A packet is typically forwarded from one router to another router through the networks that constitute an internetwork (e.g. the Internet) until it reaches its destination node.

 

A router is connected to two or more data lines from different IP networks. When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.

The most familiar type of IP routers are home and small office routers that simply forward IP packets between the home computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone.

When multiple routers are used in interconnected networks, the routers can exchange information about destination addresses using a routing protocol. Each router builds up a routing table listing the preferred routes between any two computer systems on the interconnected networks.

A Router has two types of network element components organized onto separate processing planes:

Forwarding plane: The router forwards data packets between incoming and outgoing interface connections. It forwards them to the correct network type using information that the packet header contains matched to entries in the FIB supplied by the control 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. It does this using internal pre-configured directives, called static routes, or by learning routes dynamically using a routing protocol. Static and dynamic routes are stored in the routing table. The control-plane logic then strips non-essential directives from the table and builds a forwarding information base (FIB) to be used by the forwarding plane.

Cisco Router

The main purpose of a router is to connect multiple networks and forward packets destined either for directly-attached networks or more remote networks. A router is considered a layer-3 device because its primary forwarding decision is based on the information in the layer-3 IP packet, specifically the destination IP address.

When a router receives a packet, it searches its routing table to find the best match between the destination IP address of the packet and one of the addresses in the routing table. Once a match is found, the packet is encapsulated in the layer-2 data link frame for the outgoing interface indicated in the table entry. A router typically does not look into the packet payload,[citation needed] but only at the layer-3 addresses to make a forwarding decision, plus optionally other information in the header for hints on, for example, quality of service (QoS). For pure IP forwarding, a router is designed to minimize the state information associated with individual packets. Once a packet is forwarded, the router does not retain any historical information about the packet.

Cisco Router Licensing

 

Features and benefits

 

1.Security across the WAN

Highly secure authentication, strong encryption, and segmentation help protect your users, data, and applications from the WAN edge to the cloud.

2.On-demand network services

Respond to business needs faster and increase IT efficiency by deploying integrated network services on demand, wherever you need them.

3.Transform the customer experience

Increase productivity by using real-time analytics, visibility, and control to optimize cloud and on-premises application performance.

4.Intent-based networking

Centralize management for easier deployment of SD-WAN and security while maintaining policy across thousands of sites.

 

 

 

Routers for networks of all types and sizes

Branch

Gain highly secure connectivity, machine learning, and cloud-managed security.

 

WAN aggregation

Transform your service provider or enterprise network edge for the digital era.

 

Edge

Increase density and resiliency with programmability for a scalable network edge.

 

Service provider

Address today’s needs and scale for future ones with strong ROI.

 

Industrial

Deliver enterprise-class features in rugged and harsh environments.

 

Virtual

Get multitenant network services for public, private, or provider-hosted clouds.

 

Small business

Get advanced capabilities and security features at affordable prices.