Changes between Version 3 and Version 4 of GENIExperimenter/Tutorials/WiMAXOpenFlow/Design-Setup


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Timestamp:
10/27/13 00:28:43 (6 years ago)
Author:
Ryan Izard
Comment:

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  • GENIExperimenter/Tutorials/WiMAXOpenFlow/Design-Setup

    v3 v4  
    5050      b. The '''module loading system''' maintains a list of the modules to be loaded at runtime. To remove the Forwarding module from this list (and thus disable it), open the '''/root/floodlight-0.90/src/main/resources/floodlightdefault.properties''' file and remove the line '''net.floodlightcontroller.forwarding.Forwarding,\'''.
    5151      c. Browse to the root directory of the Floodlight project -- /root/floodlight-0.90. Execute '''ant''' in the terminal. ant is a Java-based build tool to build and compile Java projects. Upon success, ant will produce an updated executable jar file in the /root/floodlight-0.90/target directory named '''floodlight.jar'''.
    52    3.  Customize the setup script '''gec18_setup.sh''' in /root/StartupScripts. This script is designed to (1) define user variables, (2) configure the tap interface with OpenVPN, (3) start Floodlight, (4) initialize and start OpenVswitch, and (5) configure Linux networking.
    53       a.  In the Root Terminal, open a new tab by browsing to File-->Open Tab.
    54       b.  In the Root Terminal, execute '''ifconfig''':
     52   3. In the client, determine the MAC addresses of the WiMAX and WiFi network interface cards (NICs) for use in OpenFlow flows.
     53      a. Load the kernel modules for each of the NICs by executing '''modprobe i2400m_usb''' and '''modprobe ath5k''', respectively.
     54      b. After the kernel modules are loaded, the devices should be visible in the system. Execute '''ifconfig wmx0''' and '''ifconfig wlan1''', respectively and note the MAC addresses of each NIC. These will be used in later steps.
     55   {{{
     56   $ ifconfig wmx0
     57      eth0      Link encap:Ethernet  HWaddr 00:0c:29:04:5c:41 
     58          inet addr:192.168.93.128  Bcast:192.168.93.255  Mask:255.255.255.0
     59          inet6 addr: fe80::20c:29ff:fe04:5c41/64 Scope:Link
     60          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
     61          RX packets:48 errors:0 dropped:0 overruns:0 frame:0
     62          TX packets:38 errors:0 dropped:0 overruns:0 carrier:0
     63          collisions:0 txqueuelen:1000
     64          RX bytes:8503 (8.3 KiB)  TX bytes:6274 (6.1 KiB)
     65          Interrupt:18 Base address:0x1424
     66   $ ifconfig wlan1
     67      eth1      Link encap:Ethernet  HWaddr 00:0c:29:04:5c:4b 
     68          inet addr:192.168.193.132  Bcast:192.168.193.255  Mask:255.255.255.0
     69          inet6 addr: fe80::20c:29ff:fe04:5c4b/64 Scope:Link
     70          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
     71          RX packets:152 errors:0 dropped:0 overruns:0 frame:0
     72          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
     73          collisions:0 txqueuelen:1000
     74          RX bytes:31818 (31.0 KiB)  TX bytes:5234 (5.1 KiB)
     75          Interrupt:19 Base address:0x14a4
     76   }}}
     77   4. Also in the client, customize the setup script '''gec18_setup.sh''' in /root/StartupScripts. This script is designed to (1) define user variables, (2) configure the tap interface with OpenVPN, (3) start Floodlight, (4) initialize and start OpenVswitch, and (5) configure Linux networking.
     78
    5579      {{{
    5680      $ ifconfig
     
    334358      This command allows you to add a simulated delay on a particular interface. So we can see the handoff when it occurs, we will add a 100ms delay to the '''br_wimax''' interface. Uncomment this line to do so.
    335359      o.  Save '''system_setup.sh''' and close your text editor.
    336    4.  Examine the kernel routing table, and create a script to automate adding and removing of IP routes.
    337       a.  In the Root Terminal, change to the '''eth_control''' directory:
    338       {{{
    339       $ cd eth_control
    340       $ ls
    341       ... delete_route.sh ...
    342       }}}
    343       b.  Determine and note the entries in the kernel IP routing table:
    344       {{{
    345       $ route -n
    346       Kernel IP routing table
    347       Destination     Gateway         Genmask         Flags Metric Ref    Use Ifac
    348       192.168.193.0   0.0.0.0         255.255.255.0   U     1      0        0 eth2
    349       192.168.193.0   0.0.0.0         255.255.255.0   U     1      0        0 eth1
    350       192.168.93.0    0.0.0.0         255.255.255.0   U     1      0        0 eth0
    351       0.0.0.0         192.168.93.2    0.0.0.0         UG    0      0        0 eth0
    352       }}}
    353       c.  With your text editor of choice, open '''delete_route.sh''':
    354       {{{
    355       $ gedit delete_route.sh
    356       #!/bin/bash
    357      
    358       echo "Previous routing table:"
    359       route -n
    360      
    361       echo "Delete route for each phyical interface's OVS bridge..."
    362       route del -net 192.168.193.0 netmask 255.255.255.0 dev br_wifi0
    363       route del -net 192.168.193.0 netmask 255.255.255.0 dev br_wimax
    364      
    365       echo "Delete route for each physical interface..."
    366       route del -net 192.168.193.0 netmask 255.255.255.0 dev eth1
    367       route del -net 192.168.193.0 netmask 255.255.255.0 dev eth2
    368      
    369       echo "Delete default routes..."
    370       route delete default dev eth0
    371      
    372       echo "Add single default route via OVS tap bridge..."
    373       route add default dev br_tap
    374      
    375       echo "New routing table:"
    376       route -n
    377      
    378       exit 0
    379       }}}
    380       Configure the script to remove all routes except a single default route via the br_tap interface. Note, until the '''system_setup.sh''' is executed, there will be no OVS bridge interfaces present. As such, this script will not be run until after '''system_setup.sh'''. (There is no harm in running it now, though. If an attempt is made to add or remove a non-existent route, a error message will be displayed and the script will continue.)
    381       d.  Save the '''delete_route.sh''' script and exit the text editor.
    382360
    383361=== Warnings ===