是网卡的中断冲突么?

sssss

服务器装有两块网卡.最近老是每隔几分钟就断一次.dmesg查看结果如下（部分）：
eth1: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        none
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: -- ERROR --
        Class:  Hardware failure
        Nr:  0x270
        Msg:  2 Pair Downshift detected
eth0: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  enabled
ACPI: Power Button (FF) [PWRF]
ACPI: Sleep Button (CM) [SLPB]
NET: Registered protocol family 10
Disabled Privacy Extensions on device ffffffff803a8ec0(lo)
IPv6 over IPv4 tunneling driver
PCI: Setting latency timer of device 0000:00:11.5 to 64
ACPI: Processor [CPU1] (supports C1)
powernow-k8: Found AMD Athlon 64 / Opteron processor (version 1.20.07 - March 18, 2004)
powernow-k8: Found AMD Athlon 64 / Opteron processor (version 1.20.07 - March 18, 2004)
powernow-k8: BIOS error - no PSB
ALSA sound/pci/via82xx.c:588: codec_read: codec 0 is not valid [0xfe0000]
ALSA sound/pci/via82xx.c:588: codec_read: codec 0 is not valid [0xfe0000]
ALSA sound/pci/via82xx.c:588: codec_read: codec 0 is not valid [0xfe0000]
ALSA sound/pci/via82xx.c:588: codec_read: codec 0 is not valid [0xfe0000]
st: Version 20040318, fixed bufsize 32768, s/g segs 256
eth0: no IPv6 routers present
eth1: no IPv6 routers present
parport0: PC-style at 0x378 [PCSPP]
parport0: irq 7 detected
Installing knfsd (copyright (C) 1996 [email protected]).
lp0: using parport0 (polling).
drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
drivers/usb/core/usb.c: registered new driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0
eth1: network connection down
eth1: -- ERROR --
        Class:  Hardware failure
        Nr:  0x264
        Msg:  unexpected IRQ Status error
eth1: Adapter failed.
eth0: network connection down
eth1: network connection down
eth0: -- ERROR --
        Class:  Hardware failure
        Nr:  0x270
        Msg:  2 Pair Downshift detected
eth0: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: no IPv6 routers present
eth0: network connection down
eth1: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        none
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: -- ERROR --
        Class:  Hardware failure
        Nr:  0x270
        Msg:  2 Pair Downshift detected
eth0: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: no IPv6 routers present
eth1: no IPv6 routers present
mtrr: 0xf2000000,0x2000000 overlaps existing 0xf2000000,0x400000
eth1: network connection down
eth1: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        none
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: network connection down
eth1: network connection down
eth0: -- ERROR --
        Class:  Hardware failure
        Nr:  0x270
        Msg:  2 Pair Downshift detected
eth0: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: no IPv6 routers present
eth0: network connection down
eth1: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        none
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: -- ERROR --
        Class:  Hardware failure
        Nr:  0x270
        Msg:  2 Pair Downshift detected
eth0: network connection up using port A
    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  enabled
eth0: no IPv6 routers present
eth1: no IPv6 routers present

gugong

换张网卡，就知道结果了。