I've looked into this further and still cannot determine where the issue lies. Based on some advice, I unplugged the OpenBSD machine and setup a Windows XP machine instead. The Windows native PPPoE client was able to download at 5.5Mb/s and the OpenBSD machine was still stuck at 1.5Mb/s.
A snippet from /var/log/messages after a ifconfig pppoe0 debug/ifconfig pppoe0 down/ifconfig pppoe0 up may be found at http://208.139.201.8/pppoe.debug. Standard output tcpdump captures from a web server capturing connections from the OpenBSD and Windows machines notes above may be found at http://208.139.201.8/openbsd.tcpdump and http://208.139.201.8/windows.tcpdump. I'm kind of at my "wits end" here and am not certain how to troubleshoot further--any and all help/comments appreciated. Thanks, Danny Melameth, Daniel D. wrote: > Just moved from cable to DSL connectivity at home and decided to give > 3.7's new kernelized pppoe as shot. > > My DSL connection trains at 7Mb/s down and 896Kb/s up and testing with > Internet speed tests, I generally get 5.5Mb/s down and 715Kb/s up. > These tests were done with the DSL router provided by my ISP. Once I > switched the router to act as just a modem, doing rfc1483 bridging, > and had the OpenBSD box handle the pppoe connection instead, which > appears to do the establish, authenticate and network phases > flawlessly, the same speed tests show my maximum to be 1.5Mb/s down > and 715Kb/s up--even though the modem is training at full speed and > the CPU states on the OpenBSD box appear okay, and I am not certain > what is causing this. This issue is reproducible from NAT/PAT clients > with PF and from the OpenBSD box itself without PF (which I believe > rules out MTU issues). I have tried the following without success, > am not certain where to look next and am looking for help: > > * Setting the MTU to 1492 on the physical pppoe interface (as per > man 4 pppoe (it's a bit confusing where to actually adjust this)?) > * Setting MSS to 1440 on pppoe in pf.conf (as per man 4 pppoe) > * Setting the MTU to 1492 or less on the interfaces of NAT clients > > One thing I noticed of possible interest is a seemingly peculiar > round-robin option in: > > $ sudo pfctl -s nat > nat on pppoe0 inet from 192.168.x.x/27 to ! 192.168.x.x/30 -> (pppoe0) > round-robin > > As the only nat line I have in my pf.conf is: > nat on $ext_if from $int_if:network to ! $wan_if:network -> ( $ext_if > ) > > Any thoughts/suggestions appreciated as I CANNOT IMAGINE relying on my > ISP's router for WAP, firewall, QoS and other functions. > > Thanks, > Danny > > > $ ifconfig -a > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33224 > inet 127.0.0.1 netmask 0xff000000 > inet6 ::1 prefixlen 128 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 > pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33224 > pfsync0: flags=0<> mtu 2020 > enc0: flags=0<> mtu 1536 > wi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > address: 00:02:6f:09:58:b2 > ieee80211: nwid methWAP nwkey <not displayed> -18dBm (auto) > media: IEEE802.11 autoselect hostap (DS2) > status: active > inet 192.168.x.x netmask 0xffffffe0 broadcast 192.168.255.255 > inet6 fe80::202:6fff:fe09:58b2%wi0 prefixlen 64 scopeid 0x5 > xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > address: 00:04:75:ac:05:48 > media: Ethernet autoselect (100baseTX full-duplex) > status: active > inet 192.168.x.x netmask 0xfffffffc broadcast 192.168.255.223 > inet6 fe80::204:75ff:feac:548%xl0 prefixlen 64 scopeid 0x6 > pppoe0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1492 > dev: xl0 state: session > sid: 0xee68 PADI retries: 1 PADR retries: 0 time: 14:2:49 > inet 70.x.x.x --> 0.0.0.1 netmask 0xffffffff > inet6 fe80::202:6fff:fe09:58b2%pppoe0 -> prefixlen 64 scopeid > 0x7 > > > $ dmesg > OpenBSD 3.7 (GENERIC) #50: Sun Mar 20 00:01:57 MST 2005 > [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC > cpu0: Intel Pentium III ("GenuineIntel" 686-class) 647 MHz > cpu0: > FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,F > XSR,SSE > real mem = 133668864 (130536K) > avail mem = 115474432 (112768K) > using 1657 buffers containing 6787072 bytes (6628K) of memory > mainbus0 (root) > bios0 at mainbus0: AT/286+(63) BIOS, date 12/30/99 > apm0 at bios0: Power Management spec V1.2 > apm0: battery life expectancy 100% > apm0: AC on, battery charge high > pcibios at bios0 function 0x1a not configured > bios0: ROM list: 0xc0000/0xc000 > cpu0 at mainbus0 > pci0 at mainbus0 bus 0: configuration mode 1 (no bios) > pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03 > ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03 > pci1 at ppb0 bus 1 > vga1 at pci1 dev 0 function 0 "S3 Savage/IX-MV" rev 0x11 > wsdisplay0 at vga1: console (80x25, vt100 emulation) > wsdisplay0: screen 1-5 added (80x25, vt100 emulation) > pcib0 at pci0 dev 5 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02 > pciide0 at pci0 dev 5 function 1 "Intel 82371AB IDE" rev 0x01: DMA, > channel 0 wired to compatibility, channel 1 wired to compatibility > wd0 at pciide0 channel 0 drive 0: <SAMSUNG MP0402H> > wd0: 16-sector PIO, LBA48, 38204MB, 78242976 sectors > wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 > atapiscsi0 at pciide0 channel 1 drive 0 > scsibus0 at atapiscsi0: 2 targets > cd0 at scsibus0 targ 0 lun 0: <TOSHIBA, DVD-ROM SD-C2402, 1317> SCSI0 > 5/cdrom removable > cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 > uhci0 at pci0 dev 5 function 2 "Intel 82371AB USB" rev 0x01: irq 11 > usb0 at uhci0: USB revision 1.0 > uhub0 at usb0 > uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 > uhub0: 2 ports with 2 removable, self powered > "Intel 82371AB Power Mgmt" rev 0x03 at pci0 dev 5 function 3 not > configured > "AT&T/Lucent LTMODEM" rev 0x01 at pci0 dev 7 function 0 not configured > vendor "Toshiba", unknown product 0x0d01 (class wireless subclass > IrDA, rev 0x00) at pci0 dev 9 function 0 not configured > cbb0 at pci0 dev 11 function 0 "Toshiba ToPIC95B CardBus" rev 0x07: > irq 11 > cbb1 at pci0 dev 11 function 1 "Toshiba ToPIC95B CardBus" rev 0x07: > irq 11 > yds0 at pci0 dev 12 function 0 "Yamaha 744" rev 0x02: irq 11 > isa0 at pcib0 > isadma0 at isa0 > pckbc0 at isa0 port 0x60/5 > pckbd0 at pckbc0 (kbd slot) > pckbc0: using irq 1 for kbd slot > wskbd0 at pckbd0 (mux 1 ignored for console): console keyboard, using > wsdisplay0 > pmsi0 at pckbc0 (aux slot) > pckbc0: using irq 12 for aux slot > wsmouse0 at pmsi0 mux 0 > pcppi0 at isa0 port 0x61 > midi0 at pcppi0: <PC speaker> > sysbeep0 at pcppi0 > lpt0 at isa0 port 0x378/4 irq 7 > npx0 at isa0 port 0xf0/16: using exception 16 > pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo > pccom1 at isa0 port 0x2f8/8 irq 3: ns8250, no fifo > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 > fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec > cardslot0 at cbb0 slot 0 flags 0 > cardbus0 at cardslot0: bus 20 device 0 cacheline 0x0, lattimer 0x0 > pcmcia0 at cardslot0 > cardslot1 at cbb1 slot 1 flags 0 > cardbus1 at cardslot1: bus 21 device 0 cacheline 0x0, lattimer 0x0 > pcmcia1 at cardslot1 > biomask ef65 netmask ef65 ttymask ffe7 > pctr: 686-class user-level performance counters enabled > mtrr: Pentium Pro MTRR support > wi0 at pcmcia0 function 0 "INTERSIL, HFA384x/IEEE, Version 01.02" port > 0xa000/64 > wi0: PRISM2.5 ISL3873, Firmware 1.1.1 (primary), 1.8.2 (station), > address 00:02:6f:09:58:b2 > xl0 at cardbus1 dev 0 function 0 "3Com Corporation, 3CCFE575CT, LAN > Cardbus Card": 3Com 3c575C-TX Ethernet: irq 11, address > 00:04:75:ac:05:48 > tqphy0 at xl0 phy 0: 78Q2120 10/100 PHY, rev. 11 > dkcsum: wd0 matched BIOS disk 80 > root on wd0a > rootdev=0x0 rrootdev=0x300 rawdev=0x302 > ac97: codec id 0x414b4d02 (Asahi Kasei AK4543) > ac97: codec features headphone, 18 bit DAC, 18 bit ADC, AKM 3D > audio0 at yds0 > opl0 at yds0: model OPL3 > midi1 at opl0: <DS-1 integrated Yamaha OPL3> > mpu at yds0 not configured > mpu at yds0 not configured > mpu at yds0 not configured > mpu at yds0 not configured > pppoe0: phase establish > pppoe0: phase authenticate > pppoe0: phase network
