Hello guys,
I want to create a networking lab, In order to simulate different network topologies and different network limitation for applications. More precisely, I want the ability to control the "wires" virtually between the physical servers, and define the network parameters such as latency, bandwidth, and packet-loss, to stress test the applications. can open-daylight help me with that, or is it completely out of scope?
Hey,
The best tool to use with simulate different network topologies is mininet, you can build up topologies such tree and mesh by default or add a custom topology.
Mininet also allow you to sent the bandwidth and the latency on the link between the virtual switches. Watch out that OpenDaylight will only see the reported interface from the vswitch and not the bandwidth set for the virtual link between the interfaces. Intro into mininet and then you can dig deeper and get into setting up RED for packet drops with the Python API
Hey Chris, thank you for your answer. With mininet I can create a network between virtual linux hosts. I want to simulate a network topology between my physical servers, therefore I looked into the OpenFlow protocol. Unfortunately, I think OpenFlow doesn't quite do this things. Am I wrong? Are you familiar with other solutions that can help me?
udragon ( 2015-01-09 11:50:29 -0700 )editThe OpenFlow protocol only push match and actions, Ie think it like this Frame/Packet match X then do Y like out which port and change what field. Mininet can be mapped to real interfaces to u have one server that does the network.
Chris O'Shea ( 2015-01-09 14:08:59 -0700 )editOpenFlow supports something called Metering, last time i looked into metering the support in openvswitch was limited so i was unable to do much testing, i believe CPqD switch is a little better
Chris O'Shea ( 2015-01-22 09:54:38 -0700 )editAsked: 2015-01-09 03:44:43 -0700
Seen: 800 times
Last updated: Jan 09 '15
