From OpenFlow Wiki

Contents 1 Overview 2 Install 3 Virtualize 3.1 Example setup 3.2 Configurations 3.3 Run FlowVisor 3.4 Notes

Overview

PortVirt is a OF proxy software that performs port-virtualization of a single switch. Using code based on the FlowVisor0.4, it allows creating multiple virtual OF switches from a single switch. It ensures that each such virtual switch has a unique datapathid and allows strict port-level separation.

Install

1. Download and compile the right branch of FlowVisor

$ git clone git://gitosis.stanford.edu/openflow.git
$ cd openflow
$ git checkout -b openflow-1.0 origin/release/1.0.0 
$ ./boot.sh; ./configure; make
$ cd ..
$ git clone git://gitosis.stanford.edu/flowvisor.git 
$ cd flowvisor
$ git checkout -b virtualize-1.0 origin/dev/virtualize-1.0
$ ./boot.sh; ./configure; make

2. Add in the default switch file

$ mkdir flowvisor-conf.d
$ echo "Default: 1" >  flowvisor-conf.d/default.switch
$ echo "ID: 9999" >>  flowvisor-conf.d/default.switch

Virtualize

Example setup

Say, you want to virtualize a switch with DPID 00:00:00:23:20:f8:25:9b into 3 virtual switches such that:

• Virtual switch A: Ports 1,2,3,4,5
• Virtual switch B: Ports 6,7,8,9,10
• Virtual switch C: Ports 11,12,13,14,15

Configurations

Add the following lines in the switch files:

$ echo "Id: 1
DatapathId: 00:00:00:23:20:f8:25:9b" > flowvisor-conf.d/switch-original.switch

$ echo "Id: 2
DatapathId: 00:00:00:23:20:f8:25:9b
virtualize" > flowvisor-conf.d/switch-A.switch

$ echo "Id: 3
DatapathId: 00:00:00:23:20:f8:25:9b
virtualize" > flowvisor-conf.d/switch-B.switch

$ echo "Id: 4
DatapathId: 00:00:00:23:20:f8:25:9b
virtualize" > flowvisor-conf.d/switch-C.switch

Add the routing guest and point it to your controller

$ echo "Name: routing
ID: 1
Host: tcp:<controller>:<port>

AllowedPorts: 1,2,3,4,5 switch-A
AllowedPorts: 6,7,8,9,10 switch-B
AllowedPorts: 11,12,13,14,15 switch-C

FlowSpace: allow:"  > flowvisor-conf.d/routing.guest

Run FlowVisor

Run FlowVisor from user mode with the following command.

$ ./flowvisor ptcp:<port>

Notes

• Take care that the ports don't overlap