Network Problems!!! Help

Network Problems!!! Help

Post by Steve Housem » Sun, 10 Dec 2000 03:13:01



Dont know the answer, but check health of system

- that you have no full partitions ie using df .
  (could have overflowed logs etc)

- check with free that have free space ie at least
  some spare swap

- Check with vmstat 2 , that plenty of idle cpu,
  and that zilch in si,so columns (no swapping).

What does ifconfig and route -n show, and tcpdump when try
a ping on the lan from server to client (ie the reported failure).

Hope you fix it soon,

Steve Houseman

--

currently  steve.houseman at * net      

 
 
 

Network Problems!!! Help

Post by Karl Heye » Sun, 10 Dec 2000 08:01:42




> I been useing my mail server for about 6 months now, never really
> touch it except for the backups. Anyway all of a sudden this morning
> it decides not to work ne more.

> I can ping it from a client with no problem. I can ping local host
> just fine. I cant ping clients. when i try ping a client, the first
> packet gets sent and the rest of the packets dont get through.

So there is not reply from a client?.   Try running a  tcpdump on the
interface to find out what is on the wire.

karl.

 
 
 

1. Linux/Windows Networking Problems. HELP!

Setup:
I'm trying to share a connection from my Windows computer (100mhz
pentium, Windows 95) to my Linux box (800mhz Duron, Mandrake 8). I
installed both network cards (RealTek RT8139 using the module 8139too on
Linux) fine on both machines and hooked them together using a crossover
cable.

Both machines can see and ping themselves (192.168.0.10 for Linux
computer, 192.168.0.11 for windows), but they cannot ping each other!

I've tried all I know to do, and I can't figure it out. I'm about ready
to toss both computers in the can ;)

Could someone help me with a step by step setup of how to do these darn
things (I've _no_ experience with networking, decent experience with
Linux)? I'm ready to pull my hair out, and I'm open to ANY suggestions
whatsoever.

If it's of any help, here's the output of ifconfig:

eth0
      Link encap:Ethernet  HWaddr 00:48:54:D0:0C:4C  
      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:3 errors:0 dropped:0 overruns:0 frame:0
      TX packets:70 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:100
      RX bytes:180 (180.0 b)  TX bytes:7752 (7.5 Kb)
      Interrupt:11 Base address:0x3000

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:28 errors:0 dropped:0 overruns:0 frame:0
      TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:2100 (2.0 Kb)  TX bytes:2100 (2.0 Kb)

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