[no subject]

I can successfully ping the loopback address and the local IP address on
each computer, but not the other computer.

I've taken the hub and the cables into the office and tried them on a
couple of computers there and the hub and cables worked fine, so I don't
think there's anything wrong with either of them. I ran the manufacturers
(Linksys) diagnostic program on the network card on the NT/Linux computer
and it didn't detect any problems. (Don't even know the brand name of the
network card on the other computer, so I haven't run any kind of diagnostic
program on that one.)

I've set up various computers before on Linux, NT, or Win 95 networks and
never had these kinds of problems, so I think I understand the general
concepts behind networking; I don't think (?) I've made any obviously
stupid configuration errors.

If it matters, the Redhat Linux is a copy of a free sampler disk that a
friend got when making a purchase from Linux Mall (I'm having some other
problems with this particular Redhat, but that's enough for a whole other
separate post).

Here's the specs on the two computers;

Computer #1:
486 generic clone, 100mhz VESA local bus
IP address of 172.16.1.1 
host name "test1", domain name "panama"
Linksys ISA NE2000 network card; set for i/o address of 0x300, IRQ 5
Dual boots between NT Workstation and Redhat 5.1 

Results of an "ifconfig" command

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1
Bcast:127.255.255.255  Mask:255.0.0.0
          UP BROADCAST LOOPBACK
RUNNING  MTU:3584  Metric:1
          RX packets:2 errors:0 dropped:0
overruns:0
          TX packets:2 errors:0 dropped:0 overruns:0

eth0
Link encap:Ethernet  HWaddr 00:40:05:3B:B8:E8
          inet
addr:172.16.1.1  Bcast:172.16.255.255  Mask:255.255.0.0
          UP
BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0
errors:0 dropped:0 overruns:0
          TX packets:5 errors:0 dropped:0
overruns:0
          Interrupt:5 Base address:0x300 

Contents of the
"hosts" file

127.0.0.1	localhost	localhost.localdomain
172.16.1.1	test1.panama
test1
172.16.1.2	test2.panama	test2

Results of a "route" command

Kernel IP routing table
Destination     Gateway         Genmask
Flags Metric Ref    Use Iface
172.16.0.0      *               255.255.0.0
  U     0      0        0 eth0
127.0.0.0       *               255.0.0.0
   U     0      0        0 lo
default         172.16.255.254  0.0.0.0
  UG    0      0        0 eth0

****************************************
Computer #2
Compaq Prolinea 486
IP address of 172.16.1.2
host name "test2", domain name "panama"
unknown ISA NE2000 clone network card; autoprobed at i/o 0x300, IRQ 11
Slackware Linux, kernel 2.0.34

Results of a "ifconfig" command

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1
Bcast:127.255.255.255  Mask:255.0.0.0
          UP BROADCAST LOOPBACK
RUNNING  MTU:3584  Metric:1
          RX packets:33 errors:0 dropped:0
overruns:0 frame:0
          TX packets:33 errors:0 dropped:0 overruns:0
carrier:0 coll:0

eth0      Link encap:Ethernet  HWaddr 00:00:E8:CD:58:7B

          inet addr:172.16.1.2  Bcast:172.16.255.255  Mask:255.255.0.0

      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX
packets:1443 errors:0 dropped:0 overruns:0 frame:0
          TX packets:63
errors:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:11 Base
address:0x300 

Results of a "route" command

Kernel IP routing table
Destination     Gateway         Genmask
Flags Metric Ref    Use Iface
localnet        *               255.255.0.0
  U     0      0        2 eth0
loopback        *               255.0.0.0
   U     0      0        2 lo

Contents of the "hosts" file

# For loopbacking.
127.0.0.1	localhost
172.16.1.2	test2.panama
test2
172.16.1.1	test1.panama	test1
# End of hosts.


Hope someone can shed some light on this perplexing dilemma I'm having here!

Paul Greene