um, .
you have a strange problem

i can see 2 way to explore ,
first the kernel :
just for ref, my .config file (extract : grep IP)
<<
genghis:/usr/src/kernel-source-2.4.16# grep IP .config | grep \# -v
CONFIG_SYSVIPC=y
CONFIG_IP_MULTICAST=y
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE=m
CONFIG_IPX=m
CONFIG_SCSI_IPS=y
CONFIG_IPDDP=m
CONFIG_PLIP=m
CONFIG_SLIP=m
CONFIG_SLIP_COMPRESSED=y
CONFIG_SLIP_SMART=y
CONFIG_STRIP=m
CONFIG_IPHASE5526=m
CONFIG_SERIAL_MULTIPORT=y
>>

second : it could be just normal that you get an mtu to 1460
when packets are the last of a transmission, the last packet can often be trunckated at its usefull size ie be less than 1500

as you talk about 1460 mtu , were you able to make a dump of the nic traffic with dump or ethereal ?

subsidiaries :
tcp is good when you have a bad net (i guess you have a bad one as you are in 8192 win size)
but why are you still in v2 (surelly some old linux workstation) ?

I have to go out of the office so I wont be able to reply to you today from now .

bye

Stefan Funke wrote:
On Tue, 17 Jun 2003 12:18:45 +0200
Stephane Bentebba <stephane.bentebba@fps.fr> wrote:

  
i'm not sure but you should have the command mii-tool
- type it as root, what do you get ?
(for ref here is what I have here :
    genghis:~# mii-tool
    eth0: negotiated 100baseTx-FD flow-control, link ok)
    

All 100tx-FD, link OK (same at switch side)

  
- what about ifconfig output (type ifconfig <yourdev>)
    

 UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
 RX packets:43303086 errors:0 dropped:0 overruns:0 frame:0
 TX packets:48909680 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:100 
 RX bytes:3674417272 (3504.1 Mb)  TX bytes:230870640 (220.1Mb)        
 Interrupt:22 Base address:0xd000 

Never seen any errors on the interfaces.

  
- and finally what about mounts (type mount)
    

We tried multiple mount options together with netapp (a while ago) -
from nfs v2, v3, hard, soft, tcp or udp etc. Right now all hosts have
it via nfsv2, tcp, rsize=8192,wsize=8192,intr,bg.


Greetings,

  

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