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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)

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Connecting two mininet in two different VM with the same Ryu Controller

I am using virtual box on Windows 10 and running two VMs with ubuntu 18 concurrently Both of them have mininet installed. In the VMs settings I have set the network as Host Only adapter and in advanced selected allow VMs so that both the VMs can…
COLLiDER
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Putting hosts in vlan using Ryu controller

I have used the following commands to put four hosts h1 h2 h3 h4 connected to a single switch s1 in two vlan with vlan tag 10 and 20, First start mininet. sudo mn --topo single,4 --controller remote --mac -i 10.0.0.1/24 then using ovs commands first…
COLLiDER
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Simulate a network with routers using Mininet/POX

I'm new to Mininet and POX controller to simulate SDN. I want to create the following network, using Mininet Python API: Network Topology My objective is to let each host/router send packets to all the other hosts/routers. To do that, I used ip…
dnyll
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Could not read config file: No such file or directory: src/main/resources/floodlightdefault.properties

I am working with the Floodlight SDN controller, which is a Maven project. I am trying to run a.jar file that I got by using the maven package command. when I try to run the jar using java -jar floodlight.jar, I get this error: ERROR…
yusur
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ERROR neutron.agent.dhcp.agent - Unexpected number of DHCP interfaces for metadata proxy

I constantly see this line of Error in neutron . I dont know how to solve it. ERROR neutron.agent.dhcp.agent [-] Unexpected number of DHCP interfaces for metadata proxy, expected 1, got 3 thanks in advance
Aref
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How can I get packet loss information from python mininet pings?

Using the Python Mininet API, I'm sending a single ping. ploss = net.ping(hosts=[node1, node2]) This prints to the console the results of packets lost/received: h1 -> h2 h2 -> h1 *** Results: 0% dropped (2/2 received) However, nothing is…
DrZoidberg
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How do I run an application for the Ryu SDN controller written in Python 2?

The work is carried out on the Ryu controller, the source code of which is posted here: https://github.com/faucetsdn/ryu/tree/master/ryu In addition, the following software is used 1)!Ubuntu 20.04 LTS 2) Python 3.8.10 and 2.7.18 are installed. Using…
user18120939
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How to properly set custom bandwidth in mininet?

I am trying to set the bandwidth to 1.7MBps, but it is not working. I saw to use argument --link=tc,bw=1.7 so I did and it is still not working. When I use commands in the mininet console to see the bandwidth, it's way too big but I found out it is…
Aninkan
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how to identify the ip address of mininet network?

I have set up a preview of ryu controller and mininet,but i am not able to identify the mininet ip address as well as not able to ping from other vm machine.But i am able to get the ip of mininet sub-host.
Siddhant Kumar
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CloudsimSDN Error while running example file given in github

Command run: java -cp cloudsimsdn-1.0-with-dependencies.jar org.cloudbus.cloudsim.sdn.example.SDNExample MFF ../dataset-energy/energy-physical.json ../dataset-energy/energy-virtual.json ../dataset-energy/energy-workload.csv >…
AKB
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Keyerror when handling the EventOFPFlowStatsReply message in the Ryu Controller

I'm trying to get the requested FlowStat information in Simple_monitor_13 (Ryu SDN Controller), but when run with a simple mininet topology and "pingall", the application keeps reporting Keyerrors coming from very basic Match Fields like Ipv4_src,…
Natrie
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How do you simulate packet drop caused by UDP flooding in Mininet?

Just to be clear, I am not interested in adding a constant packet drop on a link (as described by this Stack Overflow question). I want to observe packet drop taking place naturally in the network due to congestion. The intention of my project is to…
Dinesh Babu
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Error in pox controller in sdn using python2 and python3 for detectionEntropy

I am trying to run pox controller using the command python2 ./pox.py forwarding.​ l3_detectionEntropyemphasized text Then I got this error. ` Traceback (most recent call last): File "./pox.py", line 43, in from pox.boot import boot …
Shivani Kammari
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packet-in request after idle timeout in sdn switch using ryu controller

I'm working on the Ryu controller to set the idle and hard timeout for flows. I'm assigning the idle timeout to 10s and hard timeout to 30s. On the very first, when I run pingall on mininet this will install the flow rules by generating a packet…
Asad
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Ryu-controller for Mininet network configuration

I'm studing about a ring topology of network in mininet. There are 3 access point, in a triangle configuration: ap1, ap2 and ap3 that are connected each other. There is a station (sta1) that isn't mobile (always connected to ap3) and there is a…
Thomas Fonteine
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