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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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Problem with getting bandwidth information from mininet

I am trying to get the information for link's bandwidth from mininet by using Opendaylight Controller, but the problem is that even though there are different links with different bandwidth in the mininet topology, the information that I get from…
Blinera Ahmeti
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How to build a topology using networkX in mininet?

I built a simple network topology using mininet python script. However, I want to extend this code by using networkX to build the topology in mininet script. Thus, firstly, I should import the networx as nx. The reason for using networkX is to find…
Layally
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Ping to all hosts works in spite of enabling firewall rule on SDN Floodlight Controller

I am running Floodlight SDN controller remotely and have a mininet topology with 2 switches and 2 hosts. In spite of enabling the firewall rule using REST API [curl command], I am able to ping all the hosts. Mininet Topo- sudo mn --topo=linear,2…
Prarthana Shedge
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What does ANY mean in a dpctl dump-flows output

I have created a controller with which I am trying to add some simple routing rules. One difficulty with doing this is how to interpret the output from the dpctl dump-flows command which outputs a lot of information that I dont really find relevant…
J.Doe
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How to built a SDN fat-tree topology using dockers? No Mininet

I'm setting up a fat tree topology with OVS - SDN in two servers using dockers. I built 7 switches (docker containers) and 4 hosts which will be connected to the access switches. 1 core switch 2 aggregation switches 4 access switches 4…
LIZ AGUIRRE
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How to add new features to OpenDayLight Karaf?

How can I add new features to ODL Oxygen SR3 (0.8.3) as a Karaf module? For example, I downloaded the prebuilt ODL from the official page. Then I'd like to make the Toaster sample as a new module for Oxygen, it was created with command: wget -q -O -…
Phuc
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Catch events on ONOS REST API Applications

I'm using ONOS as my SDN Controller, REST in NB and Netconf in SB. I can send data over these layers, catch response and analyse them. Now, the question is how to receive events in REST API APPs. I mean there be no need for the APPs to send request…
Majid Roustaei
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Configuring VXLAN in OpenDayLight lab

I´m planning to build a SDN lab that consists on two datacenters with four leaf and two spine switches. I want to interconnect them using VXLAN, and use VXLAN too to interconnect datacenters. I am using mininet to build the topology and a VM with…
Diego Giménez
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Pause Open vSwitch (OVS) with the POX controller

I am trying to pause an OVS with POX as described in http://www.openvswitch.org/support/dist-docs/ovs-ofctl.8.txt The respective add-flow command is (thanks to pchaigno for his answer): sudo ovs-ofctl add-flow c2…
Daniel
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Using BPF/XDP with Mininet

I've created the following network topology in Mininet to run an algorithm I've implemented using the Linux kernel eXpress Data Path. The objective is to sample packets on the incoming link s1-eth1 on Switch 1 using XDP and store metadata in a…
gratio
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Opendaylight Can't Connect to HP Aruba SDN Switch

My lab recently procure an HP (Aruba) 2920 24G and I was told to test it out on an OpenDaylight controller. First, I setup the OpenDaylight Carbon (0.7.2) with dlux features, odl-mdsal-apidocs, odl-restconf, and odl-l2switch-switch installed. The…
radipp
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Capturing Openflow traffic with Wireshark in CentOS 6.7

I want to capture Openflow packets with wireshark on a CentOS 6.7 machine. Now the problem is, the wireshark I get from the Repositories with "yum install wireshark" is only version 1.8 and doesnt have a Openflow Dissector to understand Openflow. I…
marcels93
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traceroute mac in mininet

In mininet I want to find out through which switches ping goes. For example from PC1 (h1) to PC3 (h3). I already tried: h1 traceroute mac ip h3 or 11:00:00:00:00:00 traceroute mac 33:00:00:00:00:00 But it didnt work. "Normal" traceroute (h1…
Haniku
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Using OpenDaylight starter archetype does not work

Trying to follow the opendaylight developer tutorial to get an initial hello world application running on the controller, however running the command mvn archetype:generate -DarchetypeGroupId=org.opendaylight.controller…
Andrew Burton
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NETCONF - IOS XE - 16.04.01 cli-config-data throws error

I am trying to execute CLI commands using NETONF RPC in IOS XE 16.04.01. I got the schema for the NETCONF RPC from the device CLI "show netconf schema". Below is the schema specific to edit-config, [0, 1] required 1…
vishnukumar
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