• सुखार्थी त्यजते विद्यं विध्यार्थी त्यजते सुखम्सु sखर्थीन: कुतॊ विद्या कुतॊ विध्यार्थीन: सुखम् ||
  • “Luxury people leave knowledge, but a student leaves Luxury No knowledge for one who seeks Luxury, No luxury for student”
  • न चोर हार्यं न च राज हार्यं न भात्रू भाज्यं न च भारकारि |व्ययं कृते वर्धत एव नित्यं विद्याधनं सर्वधनप्रधानम ||
  • Cannot be snatched away by thief, cannot be snatched away by king, Cannot be divided among brothers, Not heavy either If spent daily, it always keeps growing. The wealth of knowledge is the precious of wealth of all”

Routing




Introduction

Routing is the act of moving information across an inter-network from a source to a destination.  It’s also referred to as the process of choosing a path over which to send the packets.  


Classification of Routing:

  •  Static versus Dynamic
  • Single-path versus multi-path
  • Intra-domain versus inter-domain
  • Flat versus hierarchical.
  • Link-state versus distance vector
  • Host-intelligent versus router-intelligent.

Routing algorithm Metric: Various metrics of routing algorithm are: 

  • Path length
  • Delay
  • Bandwidth
  • Load
  • Communication cost
  •  Reliability 

Static and Dynamic Routing

Static Routing

When an administrator manually assigns  the path from source to destination network.  it is called static routing

Advantages 

  • No overhead on router processor.
  • It is a secure method as only administrator can add routes.
  • Resources are managed only by administrator
  • Best practice  for small networks.

Disadvantages:

  • Highly skilled administrator is required. He should understand the network.
  • It is not practical method for large networks.
  • In case of  any failure administrator have to update all the routes.