[H-GEN] Destination Host Unreachable

ben.carlyle at invensys.com ben.carlyle at invensys.com
Mon Feb 18 00:05:38 EST 2002


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Paul,

While the "Destination Host Unreachable" message could be a routing issue, 
it is just as likely to be an ARP issue.  If nothing's going down the 
wire, then ARP messages can't get around the network so hosts with correct 
routing data still can't be mapped from IP addresses to ethernet MAC 
addresses.

Now onto the Tx timeout. I used to get this on my NE2000 compatable when 
the cable wasn't plugged in. This only applied to the coax connector when 
it hadn't decided to change over to the 10base2 yet, which thankfully it 
did automatically. Many cards of the period did not change over 
automatically, and once reset required a dos program to fiddle a bit in 
the card to point it to the right interface. Does your card have 10base2 
and 10baseT connections? This problem may be as simple as the card looking 
at the wrong one...


:)
Benjamin.





Paul Cornford <pcornford at optusnet.com.au>
Sent by: Majordomo <majordom at caliburn.humbug.org.au>
18/02/02 12:16
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        Subject:        [H-GEN] Destination Host Unreachable


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Still "Destination Host Unreachable" so no progress here despite 
numerous attempts over the past 10 months (There was no urgency). I 
eventually found that my NIC was faulty (I think) and exchanged it for a 
functional one - and ISA NE2000 compatible. The network consists of my 
own machine (RH 7.2) and a Win2000 laptop which networks fine with 
another Win95 machine. Both cards have tested fine (working well in 
other networks). I have switched cables and the cable I now use is fine 
(also tested on another network). And yes, I have tried the card in 
different slots. The link light is just a steady glow.

Pinging gives me

ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) from 192.168.0.1 : 56(84) bytes of data.
 From 192.168.0.1: Destination Host Unreachable
 From 192.168.0.1: Destination Host Unreachable
 From 192.168.0.1: Destination Host Unreachable

--- 192.168.0.3 ping statistics ---
5 packets transmitted, 0 packets received, +3 errors, 100% packet loss

ifconfig gives me

eth0      Link encap:Ethernet  HWaddr 00:00:B4:82:9F:FC
       inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
       UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
       RX packets:0 errors:0 dropped:0 overruns:0 frame:0
       TX packets:0 errors:50 dropped:0 overruns:0 carrier:0
       collisions:0 txqueuelen:100
       RX bytes:0 (0.0 b)  TX bytes:10848 (10.5 Kb)
       Interrupt:9 Base address:0x300

lo        Link encap:Local Loopback
       inet addr:127.0.0.1  Mask:255.0.0.0
       UP LOOPBACK RUNNING  MTU:16436  Metric:1
       RX packets:313 errors:0 dropped:0 overruns:0 frame:0
       TX packets:313 errors:0 dropped:0 overruns:0 carrier:0
       collisions:0 txqueuelen:0
       RX bytes:22238 (21.7 Kb)  TX bytes:22238 (21.7 Kb)

dmesg gives me

NE*000 ethercard probe at 0x300: 00 00 b4 82 9f fc
eth0: NE2000 found at 0x300, using IRQ 9.

which is correct as I manually set the jumbers on the card (ISA) to 
these values. After attempts at pinging dmesg also gives me

NETDEV WATCHDOG: eth0: transmit timed out
eth0: Tx timed out, lost interrupt? TSR=0x3, ISR=0x2, t=119.

I had trouble-free networking up until I upgraded from RH 6.2 to RH 7.0 
10 months ago and I have had no networking since. I have since upgraded 
to RH 7.1 and now RH 7.2. I have exhausted my patience with this thing 
and need help. Any takers?





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