Private network, 1 machine all RX packets "error" status as reported by ifconfig

Private network, 1 machine all RX packets "error" status as reported by ifconfig

Post by Jonathan Ma » Wed, 07 Jul 1999 04:00:00



Greetings:

I am new to setting up a network and can't get my 2 machines connected.
Or more precisely, I had connectivity at one point while playing, but
I can't get it back now that I am trying to formally set up the system.

Basically, the two machines are exchanging packets, but on one of them,
all received packets are "error" status as reported by ifconfig.

In desperation suspecting a hardware failure, I swapped ethernet cards
between the 2 machines, but no difference was noted.

I am using 3c503 cards.

The test noted below was done as follows:

boot both machines
On each machine, ifconfig >> aFile
On each machine route >> aFile
ping 192.168.0.1 (from 192.168.0.2)
On each machine, ifconfig >> aFile
ping 192.168.0.2 (from 192.168.0.1)
On each machine, ifconfig >> aFile
Combine and edit the files as done below.

Any ideas as to my catastrophic blunder?  Is there any information in
my report that is missing?

All help greatly appreciated.

Jonathan

*************************************************************************

Machine 1, IP 192.168.0.1, a pentium with Redhat 4.2 Kernel 2.0.35(?)

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
localnet        *               255.255.255.0   U     0      0        0
eth0
loopnet         *               255.0.0.0       U     0      0        0 lo

upon bootup

eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68  
          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 error:0 dropped:0 over:0 frame:0
          TX packets:0 error:0 dropped:0 over:0 carrier:0 coll:0
          Interrupt:9 Base address:0x300 Memory:dc000-de000

after ping 192.168.0.1 (from 192.168.0.2)

eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68  
          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:4 error:0 dropped:0 over:0 frame:0
          TX packets:4 error:0 dropped:0 over:0 carrier:0 coll:0
          Interrupt:9 Base address:0x300 Memory:dc000-de000

after ping 192.168.0.2 (from 192.168.0.1)

eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68  
          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:6 error:0 dropped:0 over:0 frame:0
          TX packets:39 error:0 dropped:0 over:0 carrier:0 coll:0
          Interrupt:9 Base address:0x300 Memory:dc000-de000

***********************************************************************

Machine 2, IP 192.168.0.2, a 386 with Slackware 3.4 Kernel 2.0.35

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
localnet        *               255.255.255.0   U     0      0        0
eth0
loopback        *               255.0.0.0       U     0      0        1 lo

upon bootup

eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
          inet addr:192.168.0.2  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:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:5 Base address:0x300 Memory:dc000-de000

after ping 192.168.0.1 (from 192.168.0.2)

eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:5 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:5 Base address:0x300 Memory:dc000-de000

after ping 192.168.0.2 (from 192.168.0.1)

eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:39 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:5 Base address:0x300 Memory:dc000-de000

***************************************************************************

 
 
 

Private network, 1 machine all RX packets "error" status as reported by ifconfig

Post by David Mean » Wed, 07 Jul 1999 04:00:00


Sounds to me like a broken cable.  My best advice is to replace the one
that connects to machine 2.  (If there's no hub, but a crossover cable
instead)
replace it.  If this isn't an option, I would recommend checking the cable
with an ohmmeter to find which wire is loose or disconnected.


Quote:> Greetings:

> I am new to setting up a network and can't get my 2 machines connected.
> Or more precisely, I had connectivity at one point while playing, but
> I can't get it back now that I am trying to formally set up the system.

> Basically, the two machines are exchanging packets, but on one of them,
> all received packets are "error" status as reported by ifconfig.

> In desperation suspecting a hardware failure, I swapped ethernet cards
> between the 2 machines, but no difference was noted.

> I am using 3c503 cards.

> The test noted below was done as follows:

> boot both machines
> On each machine, ifconfig >> aFile
> On each machine route >> aFile
> ping 192.168.0.1 (from 192.168.0.2)
> On each machine, ifconfig >> aFile
> ping 192.168.0.2 (from 192.168.0.1)
> On each machine, ifconfig >> aFile
> Combine and edit the files as done below.

> Any ideas as to my catastrophic blunder?  Is there any information in
> my report that is missing?

> All help greatly appreciated.

> Jonathan

> *************************************************************************

> Machine 1, IP 192.168.0.1, a pentium with Redhat 4.2 Kernel 2.0.35(?)

> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> localnet        *               255.255.255.0   U     0      0        0
> eth0
> loopnet         *               255.0.0.0       U     0      0        0 lo

> upon bootup

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>           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 error:0 dropped:0 over:0 frame:0
>           TX packets:0 error:0 dropped:0 over:0 carrier:0 coll:0
>           Interrupt:9 Base address:0x300 Memory:dc000-de000

> after ping 192.168.0.1 (from 192.168.0.2)

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>           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:4 error:0 dropped:0 over:0 frame:0
>           TX packets:4 error:0 dropped:0 over:0 carrier:0 coll:0
>           Interrupt:9 Base address:0x300 Memory:dc000-de000

> after ping 192.168.0.2 (from 192.168.0.1)

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>           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:6 error:0 dropped:0 over:0 frame:0
>           TX packets:39 error:0 dropped:0 over:0 carrier:0 coll:0
>           Interrupt:9 Base address:0x300 Memory:dc000-de000

> ***********************************************************************

> Machine 2, IP 192.168.0.2, a 386 with Slackware 3.4 Kernel 2.0.35

> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> localnet        *               255.255.255.0   U     0      0        0
> eth0
> loopback        *               255.0.0.0       U     0      0        1 lo

> upon bootup

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>           inet addr:192.168.0.2  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:0 dropped:0 overruns:0 carrier:0 coll:0
>           Interrupt:5 Base address:0x300 Memory:dc000-de000

> after ping 192.168.0.1 (from 192.168.0.2)

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>           inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:5 dropped:0 overruns:0 frame:0
>           TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 coll:0
>           Interrupt:5 Base address:0x300 Memory:dc000-de000

> after ping 192.168.0.2 (from 192.168.0.1)

> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>           inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:39 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 coll:0
>           Interrupt:5 Base address:0x300 Memory:dc000-de000

***************************************************************************

- Show quoted text -


 
 
 

Private network, 1 machine all RX packets "error" status as reported by ifconfig

Post by Jonathan M » Thu, 08 Jul 1999 04:00:00


David:

Thank you for the reply.
Sorry, forgot to mention it is thinnet 10base2 cabling.  I have tried 2
cables.  I wonder about the terminators, but I don't have any others.  I
used bnc-to-binding-post units I found in my bnc jar (I am a ham :) ) and
wired 47 ohm resistors across the binding posts.  I think this is
reasonable, but I could be wrong.

Jonathan


> Sounds to me like a broken cable.  My best advice is to replace the one
> that connects to machine 2.  (If there's no hub, but a crossover cable
> instead)
> replace it.  If this isn't an option, I would recommend checking the cable
> with an ohmmeter to find which wire is loose or disconnected.



>> Greetings:

>> I am new to setting up a network and can't get my 2 machines connected.
>> Or more precisely, I had connectivity at one point while playing, but
>> I can't get it back now that I am trying to formally set up the system.

>> Basically, the two machines are exchanging packets, but on one of them,
>> all received packets are "error" status as reported by ifconfig.

>> In desperation suspecting a hardware failure, I swapped ethernet cards
>> between the 2 machines, but no difference was noted.

>> I am using 3c503 cards.

>> The test noted below was done as follows:

>> boot both machines
>> On each machine, ifconfig >> aFile
>> On each machine route >> aFile
>> ping 192.168.0.1 (from 192.168.0.2)
>> On each machine, ifconfig >> aFile
>> ping 192.168.0.2 (from 192.168.0.1)
>> On each machine, ifconfig >> aFile
>> Combine and edit the files as done below.

>> Any ideas as to my catastrophic blunder?  Is there any information in
>> my report that is missing?

>> All help greatly appreciated.

>> Jonathan

>> *************************************************************************

>> Machine 1, IP 192.168.0.1, a pentium with Redhat 4.2 Kernel 2.0.35(?)

>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use
>> Iface
>> localnet        *               255.255.255.0   U     0      0        0
>> eth0
>> loopnet         *               255.0.0.0       U     0      0        0 lo

>> upon bootup

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>>           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 error:0 dropped:0 over:0 frame:0
>>           TX packets:0 error:0 dropped:0 over:0 carrier:0 coll:0
>>           Interrupt:9 Base address:0x300 Memory:dc000-de000

>> after ping 192.168.0.1 (from 192.168.0.2)

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>>           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:4 error:0 dropped:0 over:0 frame:0
>>           TX packets:4 error:0 dropped:0 over:0 carrier:0 coll:0
>>           Interrupt:9 Base address:0x300 Memory:dc000-de000

>> after ping 192.168.0.2 (from 192.168.0.1)

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:3C:45:68
>>           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:6 error:0 dropped:0 over:0 frame:0
>>           TX packets:39 error:0 dropped:0 over:0 carrier:0 coll:0
>>           Interrupt:9 Base address:0x300 Memory:dc000-de000

>> ***********************************************************************

>> Machine 2, IP 192.168.0.2, a 386 with Slackware 3.4 Kernel 2.0.35

>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use
>> Iface
>> localnet        *               255.255.255.0   U     0      0        0
>> eth0
>> loopback        *               255.0.0.0       U     0      0        1 lo

>> upon bootup

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>>           inet addr:192.168.0.2  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:0 dropped:0 overruns:0 carrier:0 coll:0
>>           Interrupt:5 Base address:0x300 Memory:dc000-de000

>> after ping 192.168.0.1 (from 192.168.0.2)

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>>           inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:0 errors:5 dropped:0 overruns:0 frame:0
>>           TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 coll:0
>>           Interrupt:5 Base address:0x300 Memory:dc000-de000

>> after ping 192.168.0.2 (from 192.168.0.1)

>> eth0      Link encap:Ethernet  HWaddr 02:60:8C:44:39:15
>>           inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:0 errors:39 dropped:0 overruns:0 frame:0
>>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 coll:0
>>           Interrupt:5 Base address:0x300 Memory:dc000-de000

> ***************************************************************************

 
 
 

1. network failed, and "ifconfig","demsg" gave me this info

Hi,

I tried hard to make my network work.  But I can't. :(

1. When I try "ifconfig eth0" command, it gave me this:.
************************************************
Link encap: Ethernet HWaddr 00:80:AD:41:FB:c5
UNspec addr: 171.66.102.47..(those addres are correct)
BROCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 frame:0
        Collisions:0 txqeeuel en:100
     Interrupt:11 Base address:0xe400
************************************************

2. And, the message of "demsg" command regarding the networking part is as
follows:
************************************************
eth0: ASIX AX88140 at 0xe400, 80 ad 41 fb c5, IRQ 11
eth0: EEPROM default media type Autosense
eth0: Index #0-Media MII (#11) described by a 21140 MII PHY(1) block
eth0: MII transceiver found at MDIO address 1, config 1000 status 782d
eth0: Adversting 01e1 on PHY 1, previously adversting 05e1
**************************************************

Hope this info is relevant and useful for you to analyze my problem.  

It seems The kernel does recognize my card (right?). Network works perfectly
fine if I boot with other OS on the same machine.  I am frustrated and
desperate.

Thanks you so much. You're a life saver  :)  

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