Why Core or Backbone is used in Networking?
Why Core or Backbone is used in Networking?. Before we start explaining this question, let’s note that these two terms are used interchangeably. Usually, Service Providers use Backbone, and Enterprise Networks use Core terminology but they are the same thing.
Why Network Core is Necessary?
The Key Characteristics of the Core, the Backbone part of the networks are:
- High-Speed Connectivity. Today it is 100s of Gigabit networks and is usually used as a bundle to increase the capacity.
- Bringing Internet Gateway, Access, Aggregation, and Datacenter networks together. It connects many different parts of the network, and glues together.
- Redundancy and High Availability are so important. Redundant physical circuits and devices are very common.
- Failure impact is so high in this module, compared to other modules
- Full Mesh or Partial Mesh deployment is seen mostly as these type of topologies provides the most amount of redundancy and the direct path between the different locations.
- Commonly known in the Operator community as Backbone or ‘P Layer
Redundancy in this module is very important.
Most of the Core Network deployments in ISP networks are based on Full Mesh or Partial Mesh.
The reason for having full mesh physical connectivity in the Core network Continue reading
