What is route redistribution and how does it work?

Most of us certainly use a single routing protocol in a network, but there are certain conditions under which we need to use multiple routing protocols. These conditions include multiple administrators running multiple protocols, mergers, or using devices with multiple vendors. This process is called redistribution. For more details, read the meaning of the next redistribution route.

Redistribution of the Pengertian route

Routing redistribution is a process that allows a network to use routing protocols to dynamically drive traffic based on information learned from different routing protocols, thus helping to improve the accessibility of network traffic.

Without redistributing routes, routers or virtual routers advertise and share routes only with other routers running the same routing protocol. Routing is usually only required on larger networks. But even a small network of offices can grow into a large segment that requires redistribution of the route.

What is routing?

Routing is more than sending packets from one network location to another. The routing process also includes learning the routers and determining the most efficient way to handle network traffic.

Routers are configured in a number of ways that allow them to learn routes. The simplest method is to manually configure static routes. Static routes tell routes exactly where to send packets. For example, a static route tells router 1 to route packets to router 2, and then router 2 is manually configured to send packets to router 3.

But the problem with using static routes is that many routes change their configuration, and patches from one router to another often change as the network grows. You can have thousands of different routes, and if something changes, you may be allowed to manually configure multiple routers. This can be a time consuming process, especially when it comes to larger networks.

Read also: Understanding static and dynamic routing

How routing protocols work

A better option is to allow the router to share the configuration with other routers. This allows them to dynamically learn the right path for their packages. For example, if Router 1 is connected to Router 2 and Router 4, it will share its path with both. If something changes for Router 1 in terms of infrastructure, Router 2 and Router 4 will be updated automatically, instead of relying on manual configuration.

Multiple protocols handle router sharing. The most common are OSPF (Open Shortest Path First), which is the general standard. However, some vendors such as Cisco have their own protocols, such as Enhanced Interior Gateway Routing Protocol (EIGRP).

You can combine any routing protocol, so it’s important to understand how route redistribution works. You should be able to determine when and how the newly connected network requires a new line.

Read also: Understand routing tables and routing protocols

How route redistribution works

By default, routers only advertise and share routes with other routers running the same protocol. For example, here we want to have many routers and each router has a different type of routing, for example Router1 uses OSPF and Router2 uses EIGRP and we want each route to be connected, to know the routes of the other and also to be able to exchange data, then we use this redistribution feature. Using this redistribution configuration means that each routing type will take routes from other routing types and distribute them to other protocols.


So simply redistributing the route is used to connect different types of routing. The type of routing that can be redistributed can be in the form of static routing or dynamic routing.

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