Ravi Namboori - Dynamic Routing Protocols, Cisco Evangelist

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Dynamic Routing Protocols
Presentation by Ravi Namboori Visit us _at_
http//ravinamboori.in
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Configuring Network Routing

• Broadly network routing can be configured in two
  ways
• Static Routing
• Dynamic Routing
• Static Routing
• Static routing is usually configured for small
  networks which has relatively less number of
  routes. Sometimes static routing is also used in
  larger networks but as a small part of dynamic
  routing infrastructure.
• When used in larger networks, static routing
  directs traffic to another network that is
  controlled by another party.

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Dynamic Routing

• Dynamic routing is used for larger networks and
  it automatically changes with ongoing changes in
  network topology.
• It enables reachability to all potential
  destinations that exist in the network.
• Eliminates the manual configuration requirements
  and they are built capable enough to handle the
  multiple complex network topologies
  simultaneously.
• Efficiently deals with network outages - without
  need of additional network administrative
  resources.

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Types of Dynamic Routing

• Once dynamic routing method is opted, network
  engineers will focus on selecting the types of
  dynamic routing protocols.
• There are two main categories of dynamic routing
  protocols
• Exterior Gateway Protocols (EGPs)
• Interior Gateway Protocols (EGPs)
• Exterior Gateway Protocol
• EGP is a routing protocol that enables data
  exchanging between two neighboring gateway hosts
  which exist in a network of autonomous Systems.
• It connects multiple network domains (service
  provider network or an organization network) and
  this protocol is exterior to the network domains.
  
• Typical application areas includes private
  organizations, research institutes, government
  agencies and universities.

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Types of Dynamic Routing (Continued..)

• Interior Gateway Protocol
• IGP is a routing protocol that enables exchanging
  routing information between routers within in an
  autonomous system (one routing domain).
• IGP is used to route the internet communications
  within a local area network LAN( within office
  environment).
• These dynamic protocols monitor the data movement
  from one end of the system to other end within a
  network or set of networks in single autonomous
  system.
• IGP efficiently deals with network limitations
  and supports routing metrics such as load, delay,
  reliability and bandwidth.

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Benefits of Dynamic Routing

• Independent of network size.
• Fits best to all network topologies (multiple
  routers).
• Enhances scalability and adaptability in the
  network.
• Dynamically routed networks quickly adapt to the
  changes which includes growth and or component
  failures in network topology.
• Enables effective communication between routers
  in the network, routers are better informed about
  the network topology with dynamic routing
  protocols.
• Empowers networks to function effectively even
  when partial network failure or configuration
  changes occur.

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Challenges..

• More complexities in initial implementation.
• Less secure as it involves multicast and
  broadcast routing updates. 
• Enterprises need to procure additional resources
  which includes memory, CPU and link bandwidth.
• Demands additional configuration settings such as
  routing protocol authentication and passive
  interfaces in order to ensure enhanced security.

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Thank You
Presentation by Ravi Namboori Visit us _at_
http//ravinamboori.in