Data Plane Vs Control Plane
The user plane also called the data plane carries the network user traffic. The control plane is where users specify authentication policies gather metrics and configure the data plane i e.
The communication between data plane and control plane is defined via an api for envoy this is referred to as the data plane api.
Data plane vs control plane. Another may classify the same traffic as part of the control plane. The protocol or application itself doesn t really determine whether the traffic is control management or data plane but more importantly how the router processes it. To make matters more tricky each device may see the traffic ins a different way.
For example suppose we have a simple 3 router topology that is r1 r2 r3 and r1 and r3 are running bgp with each other. The following sections will attempt to separate the two. The control plane is optimized for customizability handling policies handling exceptional situations and in general facilitating and simplifying the data plane processing.
A plane in a networking context is one of three integral components of a telecommunications architecture. The terms control plane and data plane get tossed around quite a bit these days but it seems that many have a difficult time understanding the key differences between these two terms with the ambiguity even leading to debate amongst ccie candidates this is understandable since the terms are abstractions of a sort but like many abstractions they serve an important purpose if you can grasp. Sometimes the control plane components aren t components at all and rather people and processes but the pattern is the same.
These three elements are the data plane the control plane and the management plane. The previous tweets mention several different projects linkerd nginx haproxy envoy and istio but more importantly introduce the general concepts of the service mesh data plane and the control plane in this post i will step back and discuss what i mean by the terms data plane and control plane at a very high level and then discuss how the terms relate to the projects mentioned in the tweets. One device may classify traffic as data plane traffic.
4 5 the conceptual separation of the data plane from the control plane has been done for years. The mesh of proxies as a whole. Data plane components that sit on the request path and control plane components which help that data plane do its work.
The lines between the control and data plane can get blurry sometimes. Every distributed system has components that fall roughly into these two roles.
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