[OpenFlow] Update and Setup TP-LINK TL-WR1043ND for OpenFlow

Currently the version of TP-LINK TL-WR1043ND which I can get in Taiwan is "(TW) ver:1.0" instead of ver:1.8 I want. But, fortunately, after asking the vendor about this issue, he responds that there is no difference in hardware between "(TW) ver:1.0"and ver:1.8 or ver:1.4. That is a good news to me though. The following items are my steps to  transform original TP-LINK TL-WR1043ND to OpenFlow-enabled switch. Most of information is from http://www.openflow.org/wk/index.php/Pantou_:_OpenFlow_1.0_for_OpenWRT

1. Update firmware on your device
Installing OpenWrt this web site has 4 methods for us to do updating. Because my TL-WR1043ND is brand new one, I choose the simplest of method 1: via orginal firmware.

• Download  image  (v1.8)
• Change your PC ip address to 192.168.1.2
• Connect to the switch with LAN port
• Browse http://192.168.1.1
• Choose function "update firmware" with the image bin file

2. Modify Configuration 

• Login  to 192.168.1.1 using telnet
• Setup your controller ip address (my controller ip is 192.168.1.244)
• vi  /etc/config/openflow

        config 'ofswitch'
                option 'dp' 'dp0'

                option 'dpid' '000000000011'

                option 'ofports' 'eth0.0 eth0.1 eth0.2 eth0.3 '
                option 'ofctl' 'tcp:192.168.1.244:6633'
                option 'mode'  'outofband'

• Setup your network configuration and setup this switch ip address (my switch ip is 192.168.1.11)
• vi /etc/config/network and paste the following lines

        config 'switch'
                option 'name' 'rtl8366rb'
                option 'reset' '1'
                option 'enable_vlan' '1'
                option 'enable_learning' '0'
               
        config 'switch_vlan'
                option 'device' 'rtl8366rb'
                option 'vlan' '1'
                option 'ports' '1 5t'
       
        config 'switch_vlan'
                option 'device' 'rtl8366rb'
                option 'vlan' '2'
                option 'ports' '2 5t'
       
        config 'switch_vlan'
                option 'device' 'rtl8366rb'
                option 'vlan' '3'
                option 'ports' '3 5t'
       
        config 'switch_vlan'
                option 'device' 'rtl8366rb'
                option 'vlan' '4'
                option 'ports' '4 5t'
       
        config 'switch_vlan'
                option 'device' 'rtl8366rb'
                option 'vlan' '5'
                option 'ports' '0 5t'
       
        config 'interface' 'loopback'
                option 'ifname' 'lo'
                option 'proto'  'static'
                option 'ipaddr' '127.0.0.1'
                option 'netmask' '255.0.0.0'
               
        config 'interface'
                option 'ifname' 'eth0.1'
                option 'proto' 'static'
       
        config 'interface'
                option 'ifname' 'eth0.2'
                option 'proto' 'static'
       
        config 'interface'
                option 'ifname' 'eth0.3'
                option 'proto' 'static'
       
        config 'interface'
                option 'ifname' 'eth0.4'
                option 'proto' 'static'
       
        config 'interface'
                option 'ifname' 'eth0.5'
                option 'proto' 'static'
                option 'ipaddr' '192.168.1.11'
                option 'netmask' '255.255.255.0' 

 3. Restart networking to enable your changes

• /etc/init.d/network restart

4. Verify (My case is for Trema Controller)

• Connect your Ethernet cable from LAN port to WAN port
• Start any kind of Trema app
• for instance : ./trema run ./objects/examples/learning_switch/learning_switch
• Show switch description
• TREMA_HOME=`pwd` ../apps/show_description/show_description
• And then we can get the information as follows:

        Manufacturer description: Stanford University
        Hardware description: Reference Userspace Switch
        Software description: 1.0.0
        Serial number: None
        Human readable description of datapath: OpenWrt pid=1933
        Datapath ID: 0x11
        Port no: 1(0x1)(Port up)
          Hardware address: 90:f6:52:89:c9:d0
          Port name: eth0.1
        Port no: 2(0x2)(Port up)
          Hardware address: 90:f6:52:89:c9:d0
          Port name: eth0.2
        Port no: 3(0x3)(Port up)
          Hardware address: 90:f6:52:89:c9:d0
          Port name: eth0.3
        Port no: 4(0x4)(Port up)
          Hardware address: 90:f6:52:89:c9:d0
          Port name: eth0.4