The data plane is not as clever as the control plane but is a different beast altogether. The control plane traffic carries control traffic which is not enduser data whereas the data plane traffic is actual enduser data. Juniper networks opencontrail software defined network joins the linux foundation. Junos separates the control plane and the forwarding data plane. Juniper networks pioneered the current architecture which is based on a strict separation between the control plane and the forwarding plane. Juniper technologies helped fuel the rapid growth of the internet in the early 2000s by decoupling the dataplane of an ip router from its control plane and creating routers that moved ip traffic many times faster and more economically than before. Software defined networking an overview sciencedirect topics. Juniper claims that for controlintensive services the separation of the control plane from the data plane provides greater service scalability for service providers. Apply copp policy on juniper device is done on loopback 0. Highperformance routers often have multiple distributed forwarding elements, so that the router increases performance with parallel processing. Control plane in routing domain, control plane is the part of the routerlayer 3 switch architecture that is concerned with drawing the network map, or the. Control plane cisco vsmart facilitates fabric discovery dissimilates control plane information between vedges distributes data plane and appaware routing policies to the vedgerouters implements control plane policies, such as service chaining, multitopology and multihop dramatically reduces control plane complexity. Opencontrail is a scalable networkvirtualization control plane. In routing, the forwarding plane, sometimes called the data plane or user plane, defines the part.
If you need 2550gbe interfaces, the juniper qfx5200 supports it. The juniper qfx0 series is designed as a spine switch. The control plane represents a central point of management and control for the distributed software defined application services. The mpbgp evpn control plane for vxlan was introduced in cisco nxos software release 7. Chassis cluster control plane interfaces juniper networks. Control plane of junos network operating system nos.
Depending on the router software and its configuration, functions, usually. This is part 1 of the lecture on the junos control and forwarding planes. Control plane flow and data plane flow bgp rfc 3107. Key topics within this course include troubleshooting methodology, troubleshooting tools, hardware monitoring and troubleshooting, interface monitoring and troubleshooting, troubleshooting the data plane and control plane on devices running the junos. The control and data plane are split into two separate engines. The function of the three planes of junos network os. The control plane then communicates with a software agent that runs on whitebox hardware. It achieves redundancy by communicating state, configuration, and other information to the inactive routing engine on the secondary node. Control plane flow and data plane flow bgp rfc 3107 bgp 3107 architecture for large isptelecoms covers how bgp rfc 3107 help service providers to share the vpn routes across the boundaries without sharing the pe routes. Junos control and forwarding plane packets analyzed. The srx can log information sourced from both the control plane and data planeincluding sending the information externally or storing it locally on the control plane. Deploy a vxlan network with an mpbgp evpn control plane. Afi advanced forwarding interface is junipers data plane programming interface which provides juniper internal and third party developers with ability to control and manage forwarding path in the data planes of junipers platforms.
This document is the proprietary and confidential information of juniper networks, inc. Control and data planes georgia tech software defined. Using a container approach, the juniper device manager software tool on the qfx5200 provides open access to the standard linux kernel that is the basis of the qfx5200 software stack while protecting critical control, data and management plane functions on. There is no single command that you can use to distinguish between the two.
If you are a cisco guy, you will probably expect to catch different control plane traffic types with extended access list. The data plane, the control plane and the management plane are the three basic components of a telecommunications architecture. In computing, the control plane is the part of the software that configures and shuts down the data plane. The avi controller runs in the control plane and manages each of the ses, which run in the data plane. The control plane represents a central point of management and control for the distributed softwaredefined application services. The outgoing interface will encapsulate the packet in the appropriate data link protocol. These two planes, as well as the management plane, use ip for communication, so at the ip layer, there is.
This article covers how to monitor the control plane and data plane cpu utilization separately because there is not a command to monitor both at the same time. Juniper networks opencontrail software defined network joins. The control plane software, which operates in active or backup mode, is an integral part of junos os that is active on the primary node of a cluster. Each of the planes of junos os provides a critical set of functionality in the operation of the network. However, the juniper qfx0 focuses on 40100gbe for leaftospine connections. The juniper qfx272q didnt just pass every milestone it smashed right through them, with impressive results in control and dataplane performance and scalability. This is really what separates the concept of the control and data plane. Configuring chassis cluster control ports, verifying chassis cluster control plane statistics, clearing chassis cluster control plane statistics.
Softwaredefined networking sdn separates a routers control plane from the data. Since these functions are different, the routingrelated functions are in the control plane, and the data transfers, such as the web or email, are in the data plane. Key topics within this course include troubleshooting methodology, troubleshooting tools, hardware monitoring and troubleshooting, interface monitoring and troubleshooting, troubleshooting the data plane and control plane on devices running the junos operating. The management plane is another vital component but also widely excepted as user to hardware interaction. May 01, 2015 control plane in routing domain, control plane is the part of the routerlayer 3 switch architecture that is concerned with drawing the network map, or the. Control packets originate from or are destined for a router. An abstract representation of w edget ail over an isp netw ork. Control plane control plane definition avi networks. The kernel also handles the re communications with the packet forwarding engine pfe. Volta says this approach gives it advantages over a traditional router running a monolithic code stack, such as the ability to increase compute resources on demand, and to run processes such as bgp and ospf in containers. The vsm forms the control or management plane of the nx1kv.
The junos kernel running on each lcc routing engine copies its forwarding table to all. Juniper was the first routing vendor to separate the data plane and control plane, disaggregating them into software and an asicbased router allowing centralized routing decisions with highperformance routing. The e network driver cannot be the default driver when the vm definition is built. The distinction has proven useful in the networking field where it originated. Control plane packets are destined to or locally originated by the router itself. The control plane contains the processes that control routing and switching protocols and the forwarding plane processes and forwards the frames andor packets. In this section, we explore both control plane and data plane logging, and how to export it. We are the ones taking the bold move of a separate control platform, alan sardella, juniper s senior product marketing manager for highend systems, told. The re and the pfe are connected via in internal link where all communication between the two is passed.
The control plane is the brain of the junos operating system. Understanding chassis cluster control plane and control links, example. Pdf quick survey of benefits from control plane and data. Jun 09, 2011 junos separates the control plane and the forwarding data plane. Juniper networks produces switches using a proprietary multipath layer 23. Additional requirements for the control plane, control link, data plane and data link are provided below. This course is designed to provide introductory troubleshooting skills for engineers in a network operations center noc environment. By contrast, the data plane the data plane is also sometimes referred to as the forwarding plane is the part of the software that processes the data requests. Junos architecture the control and forwarding planes.
Manages system and data plane resources, including the packet forwarding engine pfe. The control plane, data plane and forwarding plane in networks is the heart core dna in todays networking hardware to move ip packets from a to z. The data plane sometimes known as the user plane, forwarding plane, carrier plane or bearer plane is the part of a network that carries user traffic. Control plane packets are destined to or locally originated by. Difference between control plane and data plane ip with ease. The control plane software, which operates in activebackup mode, is an integral part of junos software that is. Nowadays, a pfe is a specialized piece of siliconware implemented as an application specific integrated circuit asic, a set of asics or based on a specialized type of processor called an npu network. Juniper control plane protection how does internet work. Feb 23, 2015 control and data planes georgia tech software defined networking. The re runs various protocol and management software processes that reside inside a protected memory environment.
Quick survey of benefits from control plane and data plane separation in softwaredefined networking research pdf available february 2016 with 1,480 reads how we measure reads. Traffic to node 1 is blocked when ha data plane is in activeactive mode 2020. It is the control plane that runs protocol daemons and creates a routing table that is sent to the data plane. Understanding the chassis cluster control plane juniper networks. The full course is packed with 42 videos, hours of labs and exercises. The control plane in general is anything thats needed in order to get routing working on that device. Understanding the sdn architecture and sdn control plane. The data plane is a part of a network through which user packets are transmitted. Rapid service creation using the junos sdk acm digital library. The control plane, data plane and forwarding plane in networks.
It is a theoretical term used to conceptualize the flow of data packets through a network infrastructure. Control plane and data plane ip with ease ip with ease. The routing engine re and the packet forwarding engine pfe respectively. Functions of the control plane include system configuration and management. Firstever demonstration of hardwarebased layer3 evpnvxlan gateway vxlan routing, with groundbreaking performance on 72 x 40g ethernet. Feb 26, 2008 juniper claims that for control intensive services the separation of the control plane from the data plane provides greater service scalability for service providers.
In the last post we discussed the control plane and the data plane in detail. Sep 28, 2014 junos architecture the control and forwarding planes. Junos evolves for the cloud era official juniper networks blogs. The control plane is the brain behind the services delivered by the data plane.
The data plane is simply an abstraction used to describe the actual flow of data packets using paths determined by the control plane. Forwarding plane functions run in the forwarding element. Key topics within this course include troubleshooting methodology, troubleshooting tools, hardware monitoring and troubleshooting, interface monitoring and troubleshooting, troubleshooting the data plane and control plane on devices running the junos operating system, securing the control plane, staging and acceptance methodology. The control plane makes the decision about how traffic should be prioritized and secured and where it should be switched ie its means than its for configuration and management and the data plane decides where the packets arriving destinationforwarding. Configuring chassis cluster control ports, verifying chassis cluster control plane statistics. From the start, juniper has built our products using a disaggregated and modular architecture it is simply sound engineering. The function of the three planes of junos network os dummies. This is where the bulk of the brain work takes place. May 31, 2018 the control plane is the brain of the junos operating system. Sep 27, 2012 the control plane, data plane and forwarding plane in networks.
The data plane forwards data packets through the router. Juniper networks has a distinguished record as a disruptor and a change leader in the networking industry. We are the ones taking the bold move of a separate control platform, alan sardella, junipers senior product marketing manager for highend systems, told. Mar 04, 2020 from the start, juniper has built our products using a disaggregated and modular architecture it is simply sound engineering. Cisco used shared busses until they saturated, while juniper preferred. Control and data planes georgia tech software defined networking. Do not distribute outside of the company without the permission of juniper networks engineering.
Traditionally, both the sdn control plane and data plane elements of a networking architecture were packaged in proprietary, integrated code. Pdf softwaredefined network sdn data plane security. It is often included in diagrams and illustrations to give a visual representation of user traffic. Below table describes the difference between the control plane and the data plane.
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