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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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The .mn file that I saved is empty when open

I faced a problem when I run Miniedit and save the .mn files. The .mn file that I saved is empty when opened in miniedit file open menu. Any solution on how can I fix this problem? The saved miniedit topolgy is empty when opened
yessuf Mohammed
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multi-network testlab with open vswitch on my laptop

So i'd like to build a testlab on my laptop. pretty simple. 1 backend subnet for my "backend VMs". 1 frontend subnet for my "frontend" frontend and backend subnets would be separated by a FW/LB device. my laptop should have direct access to both…
g0pher
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ImportError : No module named ryu.cmd.manager

I wanted to try the command: pythonpath=. ./bin/ryu-manager ryu/app/simple_switch.py in ryu controller and this is the error message i got : Traceback (most recent call last): File "./bin/ryu-manager", line 18, in from…
mehdi mkh
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Why does Mininet have default IP Addresses of 10.x.x.x/8 for hosts?

When I created my Mininet topology, by default the hosts were assigned IP addresses from the 10.x.x.x/8 network. Is there a specific reason behind it or was it just developed that way?
Mukhtara Tariq Siddiq
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use ftp to transfer a file between Mininet hosts

I want to start an ftp server on one Mininet host and access that server from another host, Here is what I've tried: Installing vsftpd on the Mininet VM, the server works fine to access the VM itself but I cannot figure out how to run the server on…
user18008250
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2 answers

Threading ping in mininet

I want to launch two or many hosts simultaneously for pinging two others hosts with python in mininet, i do that and doesn't work def simpleTest(h1,h2): print (h1.cmd('ping -c5 %s' h2.IP())) and main : if __name__ == '__main__': net =…
Maher Bassi
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Open Source SDN Controller

Which is the best open-source controller for Software Defined Networking(SDN) ? I have heard about Mininet, NOX, POX, Opendaylight, Floodlight etc. Thanks in advance.
SHIBLI
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How to implementation redanduncy on SDN Controller

I have 3 Opendaylight Controllers and I need to implement VRRP or any redanduncy protocols between them .. how can i get it ?
Nana Sahel
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Implementing arbitrary actions for Open vSwitch

Using Open vSwitch is it possible to new arbitrary actions besides the ones currently defined? The provided command line interfaces, such as ovs-ofctl, allow constrained rules such as ovs-ofctl add-flow s1 priority=500, in_port=1, actions=output:2,…
gratio
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Software Defined Networking in Python Using Linux RYU Controller

I am actually working in a project SDN(Software Defined Networking) Based Project using python on linux(Ubuntu). Which actually works as a packet traffic monitor. All this work is shown on the cmd without GUI. I want a GUI in which we can see the…
umer farooq
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1 answer

Opendaylight BORON packet handling

About this post, Opendaylight BORON packet handling ( Hydrogen's IListenDataPacket class - Opendaylight BORON packet handling ( Hydrogen's IListenDataPacket class) )... Someone know what is the parameters received in this methods? public…
almjr
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1 answer

Conroller SDN OpenFlow

Suppose I have a topology like < host1--switch1--switch2--switch3--controller>. So, the physical path between switch1 and the controller consist of switch2 and switch3. Does the control traffic from switch1 to the controller goes from switch2 and…
Ali
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1 answer

BGP peers established in SDN

I downloaded a routine from github about interconnection about traditional network with sdn. The program establishes ibpg peers. When I run the program, there is a problem occurred shown as follows. How can I deal with this trouble?
leo zou
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sdn - mininet openflow tutorial

I am new to mininet and trying to follow the tutorial on mininet/openflow https://github.com/mininet/openflow-tutorial/wiki/Learn-Development-Tools I have a problem with the Wireshark. Here in the tutorial it is said that: open Wireshark: > $ sudo…
helen
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opendaylight bgp-linkstate not making "loc-rib"

ODL version: Carbon I'm having a problem with getting BGP-LS into the Network Topology. As you can see from below REST output, I set up "bgp-example" and homed to an external eBGP linkstate peer. "effective-rib-in", "adj-rib-in", and "adj-rib-out"…
heidebock
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