Very Computer

by **David Efflan** » Mon, 04 Feb 2002 14:56:19

While Roaring Penquin pppoe has a nice tkpppoe interface that displays
transfer rates, I just noticed that when downloading an iso file, I was
getting more errors than RX packets and erratic speeds. But with no
drops, overruns, frame errors or collisions, the nature of the errors is
beyond me. I also noticed a server load of .3, but that may have been due
to animated images on the page the download link was on.

When I use kernel pppoe (set up with YaST2 and fired up with kinternet,
transfer is very steady (judging from ncftp) and no errors at all (and no
server load).

Examples (snipped):

rp-pppoe using tkpppoe (larger download exhibited same symptoms):
ppp0 Link encap:Point-to-Point Protocol
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:1992 errors:2004 dropped:0 overruns:0 frame:0
TX packets:2000 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:2769193 (2.6 Mb) TX bytes:104402 (101.9 Kb)

Kernel pppoe started from kinternet:
ppp0 Link encap:Point-to-Point Protocol
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:474853 errors:0 dropped:0 overruns:0 frame:0
TX packets:470639 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:700757844 (668.2 Mb) TX bytes:24487877 (23.3 Mb)

Anyone else noticed this difference between rp-pppoe and pppoe? Any idea
if it is caused by the HDLC that rp-pppoe uses or something related to the
graphic display in ktpppoe?

--
David Efflandt - All spam is ignored - http://www.de-srv.com/
http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
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by **Simon Gree** » Mon, 04 Feb 2002 16:24:12

David,

I don't know about kernel pppoe, but I have noticed that if I use
synchronous PPPoE for RP, then I get loads of packet errors. Have you set
synchronous on for Roaring Penguin? If so, try turning it off. IMHO it
makes no noticeable difference to CPU usage, at least at 512k, but the
error rates are basically 0.

Simon

> While Roaring Penquin pppoe has a nice tkpppoe interface that displays
> transfer rates, I just noticed that when downloading an iso file, I was
> getting more errors than RX packets and erratic speeds. But with no
> drops, overruns, frame errors or collisions, the nature of the errors is
> beyond me. I also noticed a server load of .3, but that may have been due
> to animated images on the page the download link was on.

> When I use kernel pppoe (set up with YaST2 and fired up with kinternet,
> transfer is very steady (judging from ncftp) and no errors at all (and no
> server load).

> Examples (snipped):

> rp-pppoe using tkpppoe (larger download exhibited same symptoms):
> ppp0 Link encap:Point-to-Point Protocol
> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
> RX packets:1992 errors:2004 dropped:0 overruns:0 frame:0
> TX packets:2000 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:3
> RX bytes:2769193 (2.6 Mb) TX bytes:104402 (101.9 Kb)

> Kernel pppoe started from kinternet:
> ppp0 Link encap:Point-to-Point Protocol
> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
> RX packets:474853 errors:0 dropped:0 overruns:0 frame:0
> TX packets:470639 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:3
> RX bytes:700757844 (668.2 Mb) TX bytes:24487877 (23.3 Mb)

> Anyone else noticed this difference between rp-pppoe and pppoe? Any idea
> if it is caused by the HDLC that rp-pppoe uses or something related to the
> graphic display in ktpppoe?

by **David Efflan** » Tue, 05 Feb 2002 07:02:31

> David,

> I don't know about kernel pppoe, but I have noticed that if I use
> synchronous PPPoE for RP, then I get loads of packet errors. Have you set
> synchronous on for Roaring Penguin? If so, try turning it off. IMHO it
> makes no noticeable difference to CPU usage, at least at 512k, but the
> error rates are basically 0.

That fixed it. I didn't know what a synchronous setting had to do with
asynchronous dsl anyway, but I unchecked that now. I just did an IE6
download and install on a LAN box and ppp0 (rp-pppoe) is clean with no
errors.

Silly side note: Why does IE6 downloaded Feb 2002 need a critical update
for it dated Dec 2001. Who would have thought that something just
download neglected to include a critical update known months ago?

--
David Efflandt - All spam is ignored - http://www.de-srv.com/
http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
http://cgi-help.virtualave.net/ http://hammer.prohosting.com/~cgi-wiz/

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