Dynamic Routing

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Dynamic Routing by Mind Map: Dynamic Routing

1. Configuration complexity increases dramatically as network grows.

2. A set of processes, algorithms, and messages that are used to exchange routing information and populate the routing table with the routing protocol's choice of best paths.

3. Dynamic Routine Protocol

3.1. Dynamic Routing Protocol Evolution

3.1.1. Have been used in networks since the late 1980s.

3.1.2. One of the first routing protocols was RIP. Released in 1988,

3.1.3. The RIP protocol was updated to RIPv2 to accommodate growth in the network environment

3.2. Dynamic Routine Protocol Component

3.2.1. Used to facilitate the exchange of routing information between routers.

3.2.2. A routing protocol is a set of processes, algorithms, and messages that are used to exchange routing information and populate the routing table with the routing protocol's choice of best paths.

3.2.2.1. Purposes of dynamic routing protocols: >Discovery of remote networks >Maintaining up-to-date routing information >Choosing the best path to destination networks >Ability to find a new best path if the current path is no longer available

3.3. The main components of dynamic routing protocols

3.3.1. Data structures - Routing protocols typically use tables or databases for its operations. This information is kept in RAM.

3.3.2. Routing protocol messages - Routing protocols use various types of messages to discover neighboring routers, exchange routing information, and other tasks to learn and maintain accurate information about the network.

3.3.3. Algorithm - An algorithm is a finite list of steps used to accomplish a task. Routing protocols use algorithms for facilitating routing information and for best path determination.

4. Static routing

4.1. Static Routing Uses in:-

4.1.1. Providing ease of routing table maintenance in smaller networks that are not expected to grow significantly.

4.1.2. Routing to and from a stub network, which is a network with only one default route out and no knowledge of any remote networks.

4.1.3. Accessing a single default route (which is used to represent a path to any network that does not have a more specific match with another route in the routing table).

4.2. Easy to implement in a small network.

4.3. Advantages and Disadvantages

4.3.1. ADVANTAGES

4.3.1.1. Very secure. No advertisement are sent as compared to dynamic routing protocols,

4.3.1.2. No routing algorithm or update mechanism required.

4.3.2. DISADVANTAGES

4.3.2.1. Suitable only for simple topologies or for special purposes such as default static routes.

5. Dynamic Routing Protocols Uses

5.1. It helps the network administrator manage the time-consuming and exacting process of configuring and maintaining static routes.

5.2. Dynamic Routing Advantages and Disadvantages

5.2.1. ADVANTAGES

5.2.1.1. Suitable in all topologies where multiple routers are required.

5.2.1.2. Generally independent in network size.

5.2.1.3. Automatically adapts topology to re-route traffic if possible.

5.2.2. Dynamic routing is the best choice for large networks like the one shown.

5.2.3. Disadvantages

5.2.3.1. Less Secure.

5.2.3.2. Can be more complex to implement.

5.2.3.3. Required additional CPU, Ram and link bandwith.