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Questions tagged [sdn]

Software-defined networking (SDN)

Software-defined networking (SDN) is an approach to computer networking which evolved from work done at UC Berkeley and Stanford University around 2008. SDN allows network administrators to manage network services through abstraction of lower level functionality. This is done by decoupling the system that makes decisions about where traffic is sent (the control plane) from the underlying systems that forward traffic to the selected destination (the data plane). (source)

621 questions
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SDN k shortest path with pyretic

can anybody help me with this code? if i run this code with pyretic, the pyretic will says File "/home/ibrahim/pyretic/pyretic.py", line 313, in main() File "/home/ibrahim/pyretic/pyretic.py", line 191, in main module =…
romy manullang
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Career choice : Automotive (AVB/TSN) vs Virtualization (Openstack/SDN/NFV)

At the current stage, market is more demanding on new technologies over legacy technologies like (Routing/Switching). Though the core value will be there but the opportunity will be less in Routing/Switching. As all these technologies are quite…
Dillip
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What will happen in hadoop, if input of one system is dependent on output some other system?

If in a Hadoop system the input of one system is dependent on the output of some other system then the parallel computation is not achieved. Is there any way to solve this problem? Please provide an elaborated solution or any links to resources.
Abhay Singh
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mininet-wifi cant support normal OVSSwitch in Mobile Node mobility scenario?

I want to programme a python script to support MN mobility in SDN network using mininet-wifi . And Mininet-WIFI support addAccessPoint() method and so on . But when I add normal ovsswitch (for example addSwitch('s1') ) ,the remote controller ONOS…
longlong
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SDN controller path installation

How the POX controller install the end-to-end paths flow entries (rules)? Is it in parallel or sequential ?? POX
Ali Al-bdairi
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want to send some packets to pox controller connected with mininet

I am new in pox controller want to write a code where switch will send some packet to controller and controller will send hello packet to the switch
Om Prakash
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Can we do away with TURN server for WebRTC sessions to be successful for ALL the scenarios?

Can we do away with TURN server for WebRTC sessions to be successful for ALL the scenarios? By ALL the scenarios, I mean the two peers can be served by different ISPs and the traffic may be routed through multiple hops over the public internet. If…
Milind Jalwadi
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POX programming and hello packet

I'm new with SDN and I want to write Python code to create switch and three hosts and controller also send hello packet from the switch to the controller
Mohammed
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Openvswitch portnumber to controller

Does anyone know how do I see what is the port number of openvswitch that is being connected to the opendaylight controller?
Himanshu Sarmah
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How to start controller in OpenDaylight Helium (Karaf based)?

I've downloaded the software and have run ./bin/karaf what is the further procedure? How to start controller? I want to use REST APIs to add flow entries. Any help is greatly appreciated. Thanks!
Omkar J
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NFV on OpenStack

I am fairly new to the NFV+SDN. I have downloaded the OpenDayLight and OpenStack in one Fedora 20 VM. I have mininet network as underlying physical topology in a separate VM. I want to run services like VPN, L3 routing and NAT, Loadbalancing etc on…
NewStacker
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Is it possible to build a virtual network with running docker containers in ONOS SDN?

I am trying to build a dynamic virtual network with ONOS SDN. Until this point I successfully deployed a network with ONOS virtual switches and virtual hosts connected to them with Mininet. But I was trying and wondering how I could connect running…
Luis Guerra
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How to host more than 65536 services, each requiring a distinct port?

I want to host web services (say a simple nodejs api service) There is a limitation on the number of services that I can host on a single host, since the number of ports available on a host is only 65536. I can think of having a virtual sub-network…
Kakarot
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SDN setup: Mininet with VMs + OpenDayLight

I'm new to SDN programming. I wanted to post it on serverFault or Network Engineering, but looks like they don't have some of the keywords. Anyways, although I knew SDN concepts before, but I want to try in practice with simulations and programming…
Tina J
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ODL Chlorine ping mininet hosts

I am trying to use the SDN ODL Chlorine controller, but I do not have access to the mininet host. I installed the features text. However, ping does not work. For the other version, it was very easy only to install the odl-l2switch-switch, but now I…
Carlos González
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