help needed

[Chris Hewitt]

Shatam,

 > 01:02.0 Ethernet controller: Realtek Semiconductor
 > Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

I seem to remember that there were some problems with 8139 chips. I've 
got several 8129 based cards but not an 8139 so I can't comment further 
on that. You could check the archives of this list, I'm sure it has come up.

 > eth0     

 > Link encap:Ethernet  HWaddr 00:08:A1:32:E1:7E  

 > inet addr:172.31.65.21  Bcast:172.31.67.255
 > Mask:255.255.252.0UP BROADCAST RUNNING
 > MULTICAST  MTU:1500   Metric:1 RX packets:1
 > errors:1286 dropped:0 overruns:0 frame:0 TX
 > packets:52 errors:0 dropped:0 overruns:0
 > carrier:0 collisions:0 txqueuelen:100 RX bytes:60
 > (60.0 b)  TX bytes:3120 (3.0 Kb)Interrupt:9
 > Base address:0xcc00


As 3120 bytes have been sent and 60 received then the card appears to be 
working but I don't like the look of the fact that only one packet has 
been received without error but 1286 with errors. Note that you have set 
an IP address of 172.31.65.21 with a netmask of 255.255.252.0 (though 
you say it should actually be 255.255.0.0) but the broadcast address of 
172.31.67.255 is covered.

 > Destination Gway  Genmask Flags  MSS Window irtt Iface

 > 172.31.64.0 0.0.0.0 255.255.252.0 U  0 0    0    eth0

 > 169.254.0.0 0.0.0.0  255.255.0.0   U  0 0    0    eth0

 > 127.0.0.0   0.0.0.0  255.0.0.0     U  0 0    0    lo

 > 0.0.0.0     172.31.65.21  0.0.0.0  UG0 0     0  eth0


I assume the router to outside your immediate LAN is 172.31.65.21, which 
is within the netmask for the ethernet card so it looks OK to me.

I feel your problem is with the 8139 not receiving properly. Either it 
is not properly supported/set up or there is something wrong with you 
cabling. It could just be a faulty cable. Not a complete solution but 
all I can see from what you have shown.

Regards

Chris
P.S. I have had trouble with your HTML email in editing a reply, I've 
had to copy and paste from your original. It would be appreciated if you 
would send in plain text.