The Advantage and Disadvantage of Static Routing everyone should know

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Reach Remote Networks :- A router can learn about remote networks in one of two ways:

Manually—Remote networks are manually entered into the route table using static routes.

Dynamically—Remote routes are automatically learned using a dynamic routing protocol.

On Manually Method, A network administrator can manually configure a static route to reach a

specific network. On the other hand, a dynamic routing protocol, static routes are not automatically updated and must be manually reconfigured any time the network topology changes.

Why Use Static Routing?

Static routing provides some advantages over dynamic routing:

  • Static routes are not advertised over the network, resulting in better security.

  • Static routes use less bandwidth than dynamic routing protocols; no CPU cycles are used to calculate and communicate routes.

  • The path a static route uses to send data is known.

  • Static routing has the following disadvantages:

  • Initial configuration and maintenance is time consuming.

  • Configuration is error-prone, especially in large networks.

  • Administrator intervention is required to maintain changing route.

Static routes are useful for smaller networks with only one path to an outside network. They also provide security in a larger network for certain types of traffic or links to other networks that need more control. It is important to understand that static and dynamic routing are not mutually exclusive. Rather, most networks use a combination of dynamic routing protocols and static routes. This may result in the router having multiple paths to a destination network via static routes and dynamically learned routes.

When to Use Static Routes

Static routing has three primary uses:

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

  • Routing to and from stub networks. A stub network is a network accessed by a single route, and the router has only one neighbor.

  • Using a single default route to represent a path to any network that does not have a more specific match with another route in the routing table.

  • Default routes are used to send traffic to any destination beyond the next upstream router.

Static Route Applications

  • Static routes are most often used for the following reasons:

  • Connect to a specific network Connect a stub router

  • Summarize routing table entries

  • Create a backup route

They can also be used to do the following:

  • Reduce the number of routes advertised by summarizing several

  • contiguous networks as one static route

  • Create a backup route in case a primary route link fails

The following types of IPv4 and IPv6 static routes will be discussed:

  • Standard static route

  • Default static route

  • Summary static route

  • Floating static route

Standard Static Route

Both IPv4 and IPv6 support the configuration of static routes. Static routes

are useful when connecting to a specific remote network.

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