[Lvlug] One Machine on Network can't see TCP/IP 192.168.0.1 (or .sometimes .2)

[Faber Fedor]

On Mon, Dec 17, 2001 at 03:08:53PM -0500, Randy Kramer wrote:
> Faber,
> 
> Thanks, I forgot I (now) have Ethernet sniffers! (tcpdump is apparently
> installed by default on Mandrake 7.2, ethereal is apparently not.)
> 
> At first glance, the results surprise me.
> 
> >From my old Linux server, I see the ping request (like "... icmp: echo
> request"), then an "... arp who-has" and an "arp reply", 

Okay, I take that to mean the NIC saw the arp request and responded, but
the ICMP message never got up (or back down) the OSI stack.  Are you
using the proper drivers for the NIC?

> but I don't see
> the "...icmp: echo reply" (which I do see for pings to other machines).
> 
> So, the ping request is getting out on the network (I assumed it
> wasn't), but 192.168.0.2 is not seeing it (or I am not seeing the
> response).  I guess I need to put a sniffer closer to 192.168.0.2 -- now
> it would be nice to have Linux on my laptop.  

Closer?  Why?  Signal degradation?

-- 
 
Regards,
 
Faber                     

Linux New Jersey: Open Source Solutions for New Jersey
http://www.linuxnj.com