Network problem
Mats Erlandson
mats at tropeab.com
Tue Feb 22 19:23:27 UTC 2005
The ifconfig output from 'problem' computer;
eth0 Link encap:Ethernet HWaddr 00:0F:EA:5C:06:CF
inet addr:192.168.0.90 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1194 errors:0 dropped:0 overruns:0 frame:0
TX packets:399 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:304926 (297.7 KiB) TX bytes:46169 (45.0 KiB)
Interrupt:209 Base address:0xc000
eth1 Link encap:Ethernet HWaddr 00:50:BA:BA:02:C6
inet addr:192.168.0.91 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:864 errors:0 dropped:0 overruns:0 frame:0
TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:275934 (269.4 KiB) TX bytes:812 (812.0 b)
Interrupt:169 Base address:0xb000
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:1603 errors:0 dropped:0 overruns:0 frame:0
TX packets:1603 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2342554 (2.2 MiB) TX bytes:2342554 (2.2 MiB)
and the output from 'netstat -rn';
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0
eth1
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0
eth0
Now from working computer 1;
eth0 Link encap:Ethernet HWaddr 00:0C:76:AC:69:37
inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:171 errors:0 dropped:0 overruns:0 frame:0
TX packets:88 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32372 (31.6 KiB) TX bytes:10635 (10.3 KiB)
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:13064 errors:0 dropped:0 overruns:0 frame:0
TX packets:13064 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:16189940 (15.4 MiB) TX bytes:16189940 (15.4 MiB)
and
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0
eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0
eth0
And, from a third computer (working);
ath0 Link encap:Ethernet HWaddr 00:40:05:26:42:3A
inet addr:192.168.0.103 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:206854 errors:180304 dropped:0 overruns:0 frame:180304
TX packets:141345 errors:1497 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:222052073 (211.7 MiB) TX bytes:17587750 (16.7 MiB)
Interrupt:10 Memory:f8a40000-f8a50000
eth0 Link encap:Ethernet HWaddr 00:00:39:2C:3D:C7
UP BROADCAST 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
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
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:3447 errors:0 dropped:0 overruns:0 frame:0
TX packets:3447 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4227407 (4.0 MiB) TX bytes:4227407 (4.0 MiB)
and
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
ath0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0
ath0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0
ath0
Let me know if you want more information.
Regards,
Mats
Rick Stevens wrote:
> Mats Erlandson wrote:
>
>> I have just added another computer, having two network cards, to my
>> network. The networking, I believe, is set up similarly to another
>> computer on the network. The computers/devices on the network are
>> connected through a switch (DLink DI-624+). The original computers
>> have no communications problems of any kind. However, the newly
>> introduced computer cannot talk directly to the switch/gateway/DHCP
>> server but can access the other computers/devices on the local
>> network, unbelievably through the switch, nor can it access the
>> internet.
>>
>> Does anyone have a clue to where my problem is?
>
>
> We'd need to see the output of "ifconfig -a" on all three, along with
> the output of "netstat -rn" on all three.
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer rstevens at vitalstream.com -
> - VitalStream, Inc. http://www.vitalstream.com -
> - -
> - Blech! ACKth! Ooop! -- Bill the Cat (Outland) -
> ----------------------------------------------------------------------
>
>
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