I have had Mandrake 9.2 on my server where network works perfect(kernel 2.6). Now I have installed Mandriva 2006 and network goes wrong. When the network traffic increase over some limit network works interruptedly. I try to replace ethernet card.

dmesg message when hang:

NETDEV WATCHDOG: eth1: transmit timed out
eth1: Transmit timeout, status 0c 0005 c07f media 80.
eth1: Tx queue start entry 2599 dirty entry 2595.
eth1: Tx descriptor 0 is 0008a5ea.
eth1: Tx descriptor 1 is 0008a5ea.
eth1: Tx descriptor 2 is 0008a5ea.
eth1: Tx descriptor 3 is 0008a5ea. (queue head)
eth1: link up, 100Mbps, full-duplex, lpa 0x45E1

# mii-diag eth1
Basic registers of MII PHY #32: 1100 782d 0000 0000 05e1 45e1 0001 0000.
The autonegotiated capability is 01e0.
The autonegotiated media type is 100baseTx-FD.
Basic mode control register 0x1100: Auto-negotiation enabled.
You have link beat, and everything is working OK.
Your link partner advertised 45e1: Flow-control 100baseTx-FD 100baseTx 10baseT-FD 10baseT, w/ 802.3X flow control.
End of basic transceiver information.

# ifconfig
eth0 Link encap:Ethernet HWadr 00:AA:00:AC:C09
inet adr:192.168.187.30 Všesmìr:192.168.187.31 Maska:255.255.255.252
inet6-adr: fe80::2aa:ff:feac:c0d9/64 Rozsah:Linka
AKTIVOVÁNO VŠESMÌROVÉ_VYSÍLÁNÍ BÌŽÍ MULTICAST MTU:1500 Metrika:1
RX packets:227395 errors:0 dropped:0 overruns:0 frame:0
TX packets:29592 errors:0 dropped:0 overruns:0 carrier:0
kolizí:0 délka odchozí fronty:1000
RX bytes:24350046 (23.2 MiB) TX bytes:14154506 (13.4 MiB)
Pøerušení:10

eth1 Link encap:Ethernet HWadr 00:00:B4:A6:31:50
inet adr:10.0.0.1 Všesmìr:10.255.255.255 Maska:255.0.0.0
inet6-adr: fe80::200:b4ff:fea6:3150/64 Rozsah:Linka
AKTIVOVÁNO VŠESMÌROVÉ_VYSÍLÁNÍ BÌŽÍ MULTICAST MTU:1500 Metrika:1
RX packets:28088 errors:0 dropped:0 overruns:0 frame:0
TX packets:23014 errors:0 dropped:0 overruns:0 carrier:0
kolizí:0 délka odchozí fronty:1000
RX bytes:4084792 (3.8 MiB) TX bytes:10270779 (9.7 MiB)
Pøerušení:9 Vstupnì/Výstupní port:0xa000

lo Link encap:Místní smyèka
inet adr:127.0.0.1 Maska:255.0.0.0
inet6-adr: ::1/128 Rozsah:Poèítaè
AKTIVOVÁNO SMYÈKA BÌŽÍ MTU:16436 Metrika:1
RX packets:10501 errors:0 dropped:0 overruns:0 frame:0
TX packets:10501 errors:0 dropped:0 overruns:0 carrier:0
kolizí:0 délka odchozí fronty:0
RX bytes:2248745 (2.1 MiB) TX bytes:2248745 (2.1 MiB)

# cat /proc/interrupts
CPU0
0: 28355408 XT-PIC timer
1: 10 XT-PIC i8042
2: 0 XT-PIC cascade
8: 1 XT-PIC rtc
9: 50927 XT-PIC eth1
10: 257125 XT-PIC eth0
11: 0 XT-PIC uhci_hcd:usb1
14: 83243 XT-PIC ide0
15: 66 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0

Linux 2.6.12-12mdk-i586-up-1GB #1 Fri Sep 9 17:51:55 CEST 2005 i586 WinChip C6 unknown GNU/Linux

Thank you for your help. Herrman