Hello,
I was playing with a a gigabit ethernet network switch I just installed
while I found out that my pppoe-firewall/router running OpenBSD 4.7
stopped responding. No packets where going through, I couldn't ping
the OpenBSD machine itself, and the serial console was not working
either.
The moment before I was trying to figure out how a HP ProCurve Switch
behaves on switching loops. Seems like the machine got killed by
too many broadcast packets coming in.
I tried this with other switches I had laying around here and was able
to reproduce the effect with another Netgear gigabit switch (GS108), but
not the smaller fast ethernet model (FS105).
The HP switch involved was a manageable model named ProCurve 1810G-8.
Maybe someone can try to reproduce this as I would not be surprised if
the rather low-end hardware running here is to blame for this. All
tests were done on the re0 and re1 interfaces. The em0
interface is used for the pppoe connection only. re2 is currently not
used.
OpenBSD 4.7-stable (GENERIC.MP) #0: Tue Jul 13 00:40:15 CEST 2010
r...@nibbler.kra.themis.site:/mnt/usbdisk/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Atom(TM) CPU N270 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,EST,TM2,xTPR
real mem = 2137485312 (2038MB)
avail mem = 2062290944 (1966MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 10/29/09, BIOS32 rev. 0 @ 0xf9400, SMBIOS
rev. 2.4 @ 0xf0000 (42 entries)
bios0: vendor Phoenix Technologies, LTD version "6.00 PG" date 10/29/2009
acpi0 at bios0: rev 0
acpi0: tables DSDT FACP HPET MCFG APIC SSDT
acpi0: wakeup devices PEG1(S3) PEX0(S5) PEX1(S5) PEX2(S5) PEX3(S5) PEX4(S5)
PEX5(S5) HUB0(S5) UAR1(S5) UAR2(S5) USB0(S3) USB1(S3) USB2(S3) USB3(S3)
USBE(S3) AC97(S5) AZAL(S5) PCI0(S5)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 133MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Atom(TM) CPU N270 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz
cpu1:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,EST,TM2,xTPR
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 2
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG1)
acpiprt2 at acpi0: bus 1 (PEX0)
acpiprt3 at acpi0: bus 2 (PEX1)
acpiprt4 at acpi0: bus 3 (PEX2)
acpiprt5 at acpi0: bus -1 (PEX3)
acpiprt6 at acpi0: bus -1 (PEX4)
acpiprt7 at acpi0: bus -1 (PEX5)
acpiprt8 at acpi0: bus 4 (HUB0)
acpicpu0 at acpi0: PSS
acpicpu1 at acpi0: PSS
acpitz0 at acpi0: critical temperature 75 degC
acpibtn0 at acpi0: PWRB
bios0: ROM list: 0xc0000/0xea00! 0xef000/0x1000!
cpu0: Enhanced SpeedStep 1597 MHz: speeds: 1600, 1333, 1067, 800 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82945GME Host" rev 0x03
vga1 at pci0 dev 2 function 0 "Intel 82945GME Video" rev 0x03
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
intagp0 at vga1
agp0 at intagp0: aperture at 0xd0000000, size 0x10000000
inteldrm0 at vga1: apic 2 int 16 (irq 10)
drm0 at inteldrm0
"Intel 82945GM Video" rev 0x03 at pci0 dev 2 function 1 not configured
azalia0 at pci0 dev 27 function 0 "Intel 82801GB HD Audio" rev 0x02: apic 2 int
16 (irq 10)
azalia0: codecs: Realtek ALC888
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x02: apic 2 int 16
(irq 10)
pci1 at ppb0 bus 1
re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00),
apic 2 int 16 (irq 10), address 00:0f:c9:04:fc:c0
rgephy0 at re0 phy 7: RTL8169S/8110S PHY, rev. 2
ppb1 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x02: apic 2 int 17
(irq 5)
pci2 at ppb1 bus 2
re1 at pci2 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00),
apic 2 int 17 (irq 5), address 00:0f:c9:04:fc:c1
rgephy1 at re1 phy 7: RTL8169S/8110S PHY, rev. 2
ppb2 at pci0 dev 28 function 2 "Intel 82801GB PCIE" rev 0x02: apic 2 int 18
(irq 11)
pci3 at ppb2 bus 3
re2 at pci3 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00),
apic 2 int 18 (irq 11), address 00:0f:c9:04:fc:c2
rgephy2 at re2 phy 7: RTL8169S/8110S PHY, rev. 2
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x02: apic 2 int 23
(irq 7)
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x02: apic 2 int 19
(irq 15)
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x02: apic 2 int 18
(irq 11)
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x02: apic 2 int 16
(irq 10)
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x02: apic 2 int 23
(irq 7)
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb3 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xe2
pci4 at ppb3 bus 4
em0 at pci4 dev 15 function 0 "Intel PRO/1000MT (82541GI)" rev 0x05: apic 2 int
16 (irq 10), address 00:03:1d:08:01:62
ichpcib0 at pci0 dev 31 function 0 "Intel 82801GBM LPC" rev 0x02: PM disabled
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <ELITE PRO CF CARD 4GB>
wd0: 1-sector PIO, LBA, 3831MB, 7847280 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 ignored (disabled)
pciide1 at pci0 dev 31 function 2 "Intel 82801GBM SATA" rev 0x02: DMA, channel
0 configured to native-PCI, channel 1 configured to native-PCI
pciide1: using apic 2 int 19 (irq 15) for native-PCI interrupt
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x02: apic 2 int 19
(irq 15)
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 2GB DDR2 SDRAM non-parity PC2-5300CL5 SO-DIMM
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
wbsio0 at isa0 port 0x2e/2: W83627DHG rev 0x23
lm1 at wbsio0 port 0x290/8: W83627DHG
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
vscsi0 at root
scsibus0 at vscsi0: 256 targets
softraid0 at root
root on wd0a swap on wd0b dump on wd0b
WARNING: / was not properly unmounted
pppoe: unknown code (0x00d3) session = 0x0464
