ORBIT-USER: Virtual access point doesn't work, anyone help?

[Bin Zan]

Hi Kishore,
      Thank you. The IP assignment issue is the problem. Now, nodes can ping
each other, and also I got results in database. Seems the VAP works!

Thanks,
Bin Zan


  -----Original Message-----
  From: owner-orbit-user at winlab.rutgers.edu
[mailto:owner-orbit-user at winlab.rutgers.edu]On Behalf Of Kishore
Ramachandran
  Sent: 2007?2?7? 11:00
  To: orbit-user at winlab.rutgers.edu
  Subject: Re: ORBIT-USER: Virtual access point doesn't work, anyone help?


  Hi Bin:

  Two reasons I see why your configuration does not work:

  (a) When you run nodehandler, it will reload the driver and wipe out your
config.

  So, your sequence of commands:

  >    1) imageNodes 1,1..2 baseline-2.0.ndz
  >    (for some reason, I have to run more than once)
  >     2)  wget -O - 'http://cmc:5012/cmc/on?x=1&y=1 '
  >        wget -O - 'http://cmc:5012/cmc/on?x=1&y=2'
  >     3) ./config_commands.bash (which config node1 and 2)
  >     4) nodehandler helloworld

  The effect of step 3 gets wiped out in step 4. Also, nodehandler does not
know how to deal with madwifi-ng driver.  My suggestion would be to stick to
bash and start your traffic generator there (you can use
iperf,netperf/nuttcp/etc.).

  (b) IP assignment issue
  From your config-*.bash script, you put the client on 192.168.1 network

  "ssh root at node1-1 ifconfig $i 192.168.1.$Number"

  and you put the AP on 192.168.2 network

  "ssh root at node1-2 ifconfig $i 192.168.2.$Number"

  Thats why ping does not work - they are not on the same IP network. This
can be fixed as follows:

  "ssh root at node1-1 ifconfig $i 192.168.1.$Number netmask 255.255.0.0"
  "ssh root at node1-2 ifconfig $i 192.168.2.$Number netmask 255.255.0.0"

  OR

  "ssh root at node1-1 ifconfig $i 192.168.1.$Number"
  "ssh root at node1-2 ifconfig $i 192.168.1.$Number"

  regards,
  Kishore


  On 2/7/07, Bin Zan <zanb at eden.rutgers.edu> wrote:
    Hi Sachin,
    Thanks for your reply,
    Ping doesn't work. If ping the node itself it works, but can't ping each
    other. Is there any further suggestion?

    Thank you,
    Bin Zan



    -----Original Message-----
    From: owner-orbit-user at winlab.rutgers.edu
    [mailto:owner-orbit-user at winlab.rutgers.edu]On Behalf Of Sachin
    Sent: 2007?2?7? 0:12
    To: orbit-user at winlab.rutgers.edu
    Subject: Re: ORBIT-USER: Virtual access point doesn't work, anyone help?


    I think a basic connectivity check would be useful. Does ping work?

    On 2/6/07, Bin Zan <zanb at eden.rutgers.edu> wrote:
    >
    >
    > Hi all,
    >         I was trying to simulate VAP on sandbox5,but it seems not
working.
    > What I did is:
    >     1) imageNodes 1,1..2 baseline-2.0.ndz
    >    (for some reason, I have to run more than once)
    >     2)  wget -O - 'http://cmc:5012/cmc/on?x=1&y=1 '
    >        wget -O - 'http://cmc:5012/cmc/on?x=1&y=2'
    >     3) ./config_commands.bash (which config node1 and 2)
    >     4) nodehandler helloworld
    >    But the transmission failed. Anyone has any suggestion?
    >
    > Thanks,
    > Bin Zan
    >
    >



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