Questions tagged [mininet]

For questions about Mininet a network emulator running a collection of end-hosts, switches, routers, and links on a single Linux kernel.

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pinging with iperf vs without iperf

I am running a basic point to point topology on mininet. If I do h2 ping h1, I get such rtt values: rtt min/avg/max/mdev = 0.028/0.067/0.129/0.022 ms But when I ping while the iperf is measuring, my ...
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1answer
72 views

A flow hit the OpenFlow flow table improperly

I did a small experiment by using mininet,ONOS, Iperf. I want to see flow routing according to srcIP, dstIP, UDP, dstPort. Therefore, I generated a UDP flow (srcIP=10.0.0.3, dstIP=10.0.0.2, dstPORT=...
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421 views

how to send tcp packets between 2 hosts on same network

iam using mininet network simulation tool and i need to send tcp packets between 2 host hosts are 10.0.0.1,10.0.0.2 ,i used the hping3 but is sends ip packets also i used this command hping3 -c 1 [...
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1answer
247 views

Detecting access point tree on POX Spanning Tree

I have created a topology at Mininet-Wifi with 4 access point and 2 station. #!/usr/bin/python import sys from mininet.net import Mininet from mininet.node import Controller,OVSKernelSwitch, ...
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1answer
258 views

dpctl: OpenFlow packet receive failed: unexpected end of file

I'm doing some experiment with SDN and pox controller, I have written flows manually shown below: dpctl add-flow tcp:127.0.0.1:6653 in_port=10,actions=output:14 dpctl add-flow tcp:127.0.0.1:6653 ...
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1answer
42 views

data transfer to another domain

I want to have a simple multi-domain topology in mininet in which each domain is controlled by a single controller. I'm using Floodlight controller and OVS (switches). Imagine this topology: c1 ...
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1answer
359 views

The communication among multiple controllers

I want to have a simple multi-domain topology in mininet in which each domain is controlled by a single controller and the communication among domains will take place through controllers. So I will ...
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2answers
282 views

Direct packet forwarding by controller

In a SDN network when a switch receives a packet for which it can not find a match in its flow table, it will forward this packet to the controller. The controller will decide about this packet and ...
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1answer
345 views

Add a flow to OVSK for communication

I have created a torus topology in mininet by enabling sflow and connecting to POX controller for topology discovery. Below is the command. sudo mn --custom=sflow-rt/extras/sflow.py --link tc,bw=10 --...
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0answers
84 views

Mininet CLI output redirect [closed]

I am running a custom topology in Mininet and would like to get bandwidth between each switch. When I try Iperf s1 s2, I get the results which is good. Now I want the output to redirected to a file. ...
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1answer
95 views

Default Action in SDN Controller

In legacy IPv4 networks there exists a default route concept for routers where a router does not need to know exact destination of IP packet. Is there a default action concept for SDN switches? Let ...
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2answers
404 views

How to configure VLAN?

I have simple tree topology network. I want to configure VLAN on this network, PFA the image. Am I wrong? Can VLANs actually be configured like this. I have setup this topology on mininet. More of ...
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2answers
174 views

How ethernet links can have a delay and loss

In some simulation environment, such as mininet, you are given parameters when you define your virtual link between switches such as: bandwidth, delay, and loss. I understand a link has a bandwidth ...
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1answer
91 views

OpenFlow takes some seconds to apply rule

Is there a delay for openflow rules added with ovs-vsctl tool? I am successfully limiting the traffic of a specific interface with: ovs-vsctl set interface s0-eth1 ingress_policing_rate=128 ...
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2answers
1k views

Problem with an n-host, zero-switch topology in mininet

I am experimenting a bit to gain a better understanding of Mininet and Openflow. I have built a topology with n hosts in a line and no switches. Strangely, host 1 and host 2 can ping each other but ...
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1answer
1k views

Problem configuring QoS with FlowVisor and OpenVswitch

I am running a small experiment to isolate bandwidth with flowvisor (version 1.4, version 1.0 of openflow) implementing a port based slicing. With mininet, I create a topology that consists of a host ...
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1answer
696 views

Application aware routing in software defined network

For the last couple of months i am delving into SDN and trying to implement the application aware routing through SDN . Application aware routing: SDN controller will route each application data ...
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1answer
753 views

Get packet loss from Open Flow switch

I am using an Ryu controller (3.22) to monitor switches (Open vSwitch 2.0.2, supporting Open Flow 1.3), which are a part of virtual network created using mininet (2.1.0). It is a tree topology with ...
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1answer
2k views

Decoding packets in an OpenFlow ryu switch

I'm trying to examine a simple OpenFlow ryu switch, and get out of it the destination and source addresses. I'm using Mininet. For example for the next commands: h1 python -m SimpleHTTPServer 80 &...