Wolfgang Bornath wrote:
>
> On Thu, Apr 05, 2001 at 22:36 -0400, Pierre Fortin wrote:
> >
> > Unless the machines are "seeing" each other, the LEDs are only an indication of
> > ARPing (broadcast packets) which must complete before any ping packets are
> > sent. What does "arp -a" give on each...?
>
> [root@molch wobo]# arp -a
> molch.wolf-b.de (192.168.100.1) at <incomplete> on eth0
>
> [root@lapmolch:~]#arp -a
> ? (192.168.100.1) at <incomplete> on eth0
> ^^^ This is not a misprinting.
[Going back to your ealier posting, you had a UH entry overlapping the subnet;
have you tried deleting it? I'm not sure why a host route would even be there
when a net route exists...]
So neither machine has a MAC entry for the other... you should see something
like:
[root@bones pfortin]# arp -a
r41 (192.168.1.1) at 00:20:78:C9:E1:1A [ether] on eth0
homer (192.168.1.102) at 08:00:5A:38:6C:1B [ether] on eth0
woody (192.168.1.101) at 00:01:02:E8:D7:9F [ether] on eth0
fork (192.168.134.4) at <incomplete> on eth1
In my example, fork was a router which is no longer connected. In your case,
192.168.100.1 appears to be an old gateway entry; but you have no entry for
192.168.100.2 and 192.168.100.3...
> [root@molch wobo]# tcpdump
> tcpdump: listening on eth0
> 05:20:33.072763 arp who-has molch.wolf-b.de tell lapmolch.wolf-b.de
> [...message repeated 4 times...]
> 05:20:38.069445 arp who-has molch.wolf-b.de tell lapmolch.wolf-b.de
> 05:21:58.506756 arp who-has molch.wolf-b.de tell molch.wolf-b.de
> 05:21:59.505228 arp who-has molch.wolf-b.de tell molch.wolf-b.de
> 05:22:00.505225 arp who-has molch.wolf-b.de tell molch.wolf-b.de
> 05:24:30.143578 arp who-has molch.wolf-b.de tell lapmolch.wolf-b.de
> [...message repeated 14 times...]
> 05:25:06.139561 arp who-has molch.wolf-b.de tell lapmolch.wolf-b.de
Hmmm... molch sees ARP Requests from lapmolch... it also appears to be asking
for its own MAC address... neither are responding.
I forgot the default output of tcpdump was terse... Can you give the output of
"tcpdump -ex"?
Pierre
