On Sun, Jul 28, 2002 at 02:14:06PM +0300, Vladimir I. wrote:
> Ray wrote about "[leaf-user] WISP drivers loaded but can't ping":
> 
> > I managed to get WISP-Dist loaded and recognizing my Prism 2 based wireless
> > card with no problem but I can't get it to ping any of my other wireless
> > boxes.  All are using the same type of card, 2 are using a standard Debian
> > distro with wlan-ng and 1 is using Station Server.  The are all using Ad-Hoc
> > mode with wep disabled and they can talk to each other just fine.  From the
> > Statistics page it looks like the WISP-Dist box is seeing packets from the
> > others but just isn't doing anything about them.  I'm reasonably sure I
> 
> Can you run "tcpdump -i [interface] -n" and see what it shows 
> when you try to ping etc?

Ok, I removed all machines from the wireless network except the WISP-Dist
box and a laptop and ran tcpdump on the WISP-Dist box and started pinging
from the laptop.:

  # tcpdump -i netcs1 -n
  Kernel filter, protocol ALL, datagram packet socket
  tcpdump: listening on netcs1
  11:12:11.852643 B arp who-has 192.168.4.2 tell 192.168.4.6
  11:12:11.852957 > arp reply 192.168.4.2 (0:2:6f:1:5f:27) is-at
  0:2:6f:1:5f:27 (0:2:6f:1:89:48)
  11:12:12.848877 B arp who-has 192.168.4.2 tell 192.168.4.6
  11:12:12.849035 > arp reply 192.168.4.2 (0:2:6f:1:5f:27) is-at
  0:2:6f:1:5f:27 (0:2:6f:1:89:48)
  11:12:13.848948 B arp who-has 192.168.4.2 tell 192.168.4.6
  11:12:13.849102 > arp reply 192.168.4.2 (0:2:6f:1:5f:27) is-at
  0:2:6f:1:5f:27 (0:2:6f:1:89:48)
  11:12:14.850622 B arp who-has 192.168.4.2 tell 192.168.4.6
  11:12:14.850777 > arp reply 192.168.4.2 (0:2:6f:1:5f:27) is-at
  0:2:6f:1:5f:27 (0:2:6f:1:89:48)
  11:12:15.849210 B arp who-has 192.168.4.2 tell 192.168.4.6
  11:12:15.849360 > arp reply 192.168.4.2 (0:2:6f:1:5f:27) is-at
  0:2:6f:1:5f:27 (0:2:6f:1:89:48)

  10 packets received by filter

The 192.168.4.6 and 0:2:6f:1:89:48 really do belong to the laptop so at
least the WISP box is receiving correctly...  I also noticed that the laptop
side shows a RX packets of 0 (using ifconfig) so it's not getting the
replies.  Reversing the process outputs nothing at all on the laptop.

> 
> > havn't done anything dumb with the routing and iptables -L doesn't show any
> > firewall rules.  What could I be missing?
> > 
> > BTW I can't seem to cut & paste from the Statistics page (I'm logged in via
> > ssh on the wired link) so is there any good way to get that same
> > information?
> 
> Hmm, I'm able to do it. However I didn't try it using xterm, try 
> to login via virtual console or change terminal from "xterm" to 
> something else.
> 
> Of course, you can run statistics commands manually from the
> command line. "iwconfig", "ip addr", "ip route" etc.

Thanks I'd forgotten about the ip *** commands.  

Could the output from the WISP box be getting stuck before getting out? 
Also, as an experiment I tried running WISP as an AP.  The other machines
were able to associate but could not communicate with any others.

Any ideas?

-- 
Ray


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