I have a Verizon USB720 dongle that shows up as ucom0. I intend to
use
it for connecting remotely with my X40. I'm having problems when
packets exceed a certain size. When this happens, the return packets
never make it back to my system.
I can connect fine with ppp(8). I can ping remote hosts and do
traceroutes. I can ssh to hosts and perform basic commands. Only
when
the payload exceeds ~900 bytes do things start to fail. This happens
with almost all TCP traffic, but is most noticeable with SSH or HTTP.
Here is my ppp.conf:
default:
set device /dev/cuaU0
disable vjcomp
set speed 921600
set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
\"\" AT OK-AT-OK ATE1Q0s7=60 OK \\dATDT\\T TIMEOUT 40 CONNECT"
set phone "#777"
set login
# obfuscated for her pleasure
set authname 1234567...@vzw3g.com
set authkey vzw
set timeout 120
set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.0 0.0.0.0
add default HISADDR
enable dns
And here are some simple tests. I've created a test file of zeroes,
increasing by 10 bytes each time. It finally stalls at 930 bytes.
I've
tried it with and without vjcomp.
$ sudo ppp -ddial default
Working in ddial mode
Using interface: tun0
$ ifconfig tun
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
priority: 0
groups: tun egress
inet 75.198.2.176 --> 66.174.112.64 netmask 0xffffff00
$ scp foobar:test.img /dev/null
test.img 100% 900 0.9KB/s 00:00
$ scp foobar:test.img /dev/null
test.img 100% 910 0.9KB/s 00:00
$ scp foobar:test.img /dev/null
test.img 100% 920 0.9KB/s 00:00
$ scp foobar:test.img /dev/null
test.img 0% 0 0.0KB/s - stalled -
I've played with ppp(8) in interactive mode and confirmed that it
doesn't restart the connection. It stays up, but packets where the
exceeding payload occurs simply fail the return path (they leave the
remote side).
Here is my dmesg. Any suggestions are greatly appreciated.
Thanks,
Jason
OpenBSD 4.4-current (GENERIC) #1: Wed Jan 7 14:28:27 EST 2009
r...@fujr.office.omniti.com:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) M processor 1.40GHz ("GenuineIntel" 686-
class)
599 MHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,D
S,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,SBF,EST,TM2
real mem = 1063743488 (1014MB)
avail mem = 1020313600 (973MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 08/31/06, BIOS32 rev. 0 @
0xfd740,
SMBIOS rev. 2.33 @ 0xe0010 (56 entries)
bios0: vendor IBM version "1UETD2WW (2.07 )" date 08/31/2006
bios0: IBM 2371G4U
apm0 at bios0: Power Management spec V1.2
apm0: battery life expectancy 97%
apm0: AC off, battery charge high, estimated 2:31 hours
acpi at bios0 function 0x0 not configured
pcibios0 at bios0: rev 2.1 @ 0xfd6d0/0x930
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdeb0/256 (14 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev
0x00)
pcibios0: PCI bus #3 is the last bus
bios0: ROM list: 0xc0000/0xc800! 0xcc800/0x1000 0xcd800/0x1000
0xdc000/0x4000! 0xe0000/0x10000
cpu0 at mainbus0: (uniprocessor)
cpu0: Enhanced SpeedStep 600 MHz (988 mV): speeds: 1400, 1300, 1200,
1100, 1000, 900, 800, 600 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82855GM Host" rev 0x02
"Intel 82855GM Memory" rev 0x02 at pci0 dev 0 function 1 not
configured
"Intel 82855GM Config" rev 0x02 at pci0 dev 0 function 3 not
configured
vga1 at pci0 dev 2 function 0 "Intel 82855GM Video" rev 0x02
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 0xe0000000, size 0x8000000
inteldrm0 at vga1: irq 11
drm0 at inteldrm0
"Intel 82855GM Video" rev 0x02 at pci0 dev 2 function 1 not configured
uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: irq 11
uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x01: irq 11
uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x01: irq 11
ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x01: irq 11
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb0 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x81
pci1 at ppb0 bus 2
cbb0 at pci1 dev 0 function 0 "Ricoh 5C476 CardBus" rev 0x8d: irq 11
sdhc0 at pci1 dev 0 function 1 "Ricoh 5C822 SD/MMC" rev 0x13: irq 11
sdmmc0 at sdhc0
em0 at pci1 dev 1 function 0 "Intel PRO/1000MT Mobile (82541GI)" rev
0x00: irq 11, address 00:0a:e4:2c:24:c9
ral0 at pci1 dev 2 function 0 "Ralink RT2561S" rev 0x00: irq 11,
address
00:1d:7d:77:af:41
ral0: MAC/BBP RT2561C, RF RT2527
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 3 device 0 cacheline 0x0, lattimer 0xb0
pcmcia0 at cardslot0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x01:
24-bit
timer at 3579545Hz
pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x01: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
wd0 at pciide0 channel 0 drive 0: <HITACHI_DK13FA-40B>
wd0: 16-sector PIO, LBA, 38154MB, 78140160 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
pciide0: channel 1 disabled (no drives)
ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x01:
irq 11
iic0 at ichiic0
spdmem0 at iic0 addr 0x51: 512MB DDR SDRAM non-parity PC2700CL2.5
auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: irq
11,
ICH4 AC97
ac97: codec id 0x41445374 (Analog Devices AD1981B)
ac97: codec features headphone, 20 bit DAC, No 3D Stereo
audio0 at auich0
"Intel 82801DB Modem" rev 0x01 at pci0 dev 31 function 6 not
configured
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
isa0 at ichpcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
biomask effd netmask effd ttymask ffff
mtrr: Pentium Pro MTRR support
softraid0 at root
root on wd0a swap on wd0b dump on wd0b
kqemu: kqemu version 0x00010300 loaded, max locked mem=519404kB
DDB symbols added: 335040 bytes
auich0: measured ac97 link rate at 48005 Hz, will use 48000 Hz
umsm0 at uhub2 port 1 configuration 1 interface 0 "Novatel Wireless
Inc.
Novatel Wireless CDMA" rev 1.10/0.00 addr 2
ucom0 at umsm0
umsm1 at uhub2 port 1 configuration 1 interface 1 "Novatel Wireless
Inc.
Novatel Wireless CDMA" rev 1.10/0.00 addr 2
ucom1 at umsm1
