Changes between Version 6 and Version 7 of HandoverTestbed


Ignore:
Timestamp:
09/30/15 16:33:48 (9 years ago)
Author:
ljw725@gmail.com
Comment:

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  • HandoverTestbed

    v6 v7  
    2020[[Image(ovs-show.jpg, align=center)]]
    2121Figure (3) OVS Configuration
     22
    2223As shown in Figure (3), the OVS has three ports. Port “br_tap” is the local interface of the OVS Bridge. It will be used as the default interface for all application traffic. Port “wlan0” connects to the WiFi interface. Port “wmaxtun” is a gre tunnel to eth5 of the handover root node (130.127.38.133) built upon the WiMAX interface.   Basically, application packets received at port “br_tap” will be forwarded out through either port “wlan0” or port “wmaxtun”. Forwarding out through “wlan0”/”wmaxtun” means that your application is using WiFi/WiMAX.
    2324
    24255. Run script “initial_flows_wifi.sh” (“initial_flows_flow.sh”) to indicate that your application will use WiFi (WiMAX) in the beginning. This will insert corresponding flow entry into the OVS. Figure (4) shows the flow entries after running “initial_flows_wifi.sh”
    2526
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     27[[Image(initial-flow.jpg, align=center)]]
    2728Figure (4) Initial Flow Entries for WiFi in OVS
    2829
    29306. Run script “dhclient_tap.sh” to get an IP for br_tap and meanwhile, notify the root node which network is currently being used (The root node needs to know which network is currently being used so that it knows which way it should use to send packets back to you). After this, you can see that br_tap has an IP address of “192.168.4.8”, as shown in Figure (5).
    3031
    31 
     32[[Image(ip-brtap.jpg, align=center)]]
    3233Figure (5) IP of br_tap
    3334