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SubjectRe: 2.0.20: ppp0 ifconfig errors
On Thu, 19 Sep 1996, Rob van Nieuwkerk wrote:

> In linux.dev.kernel you write:
>
> >Hello all,
>
> > I don't want to come off like I'm sounding a siren, but I have
> >noticed something odd with kernels 2.0 since sublevel 18 or so. I get
> >unreasonable numbers of errors in the ifconfig count for my ppp0
> >interface. Some background: I've been using the same hardware/phone
> >line/ISP since about 1.3.50 and have never seen this before. I'm using
> >ppp-2.2.0f as a module. Only since 2.0.18 (or thereabouts) have I been
> >seeing *any* errors on an ifconfig report. After only a few hours of
> >uptime, I have a report like this:
>
> >ppp0 Link encap:Point-Point Protocol
> > inet addr:204.157.220.226 P-t-P:204.157.220.8 Mask:255.255.255.0
> > UP POINTOPOINT RUNNING MTU:296 Metric:1
> > RX packets:21426 errors:217 dropped:217 overruns:0
> > TX packets:13815 errors:0 dropped:0 overruns:0
>
> I see this too. I can't remember ever seeing this in the past.
> First I thought it happened because of a serial board swap on
> a machine but I suspect it has something to do with serial overruns /
> interrupt latency problems when receiving data. I see it on my 2 PPP
> router machines: (machine1: Cyrix 486 DX2/66, 4 MB, machine 2: Intel
> 486/33 20 MB) Both run 2.0.20 and have 16550As and are connected with 115
> Kb to USR Courier modems. Machine 1 gets an occasional error. Lets say
> a few per week. Machine 2 considerably more. Something like 25 a day.
> This is interesting because the bulk of the traffic goes from machine
> 2 to machine 1. Maybe the small memory of machine 2 plays a role ?

I see the same thing. I thought it was a bad line, but I
couldn't understand why only one system was seeing errors.

---
Jeffrey Gustafson -- jeffgus@packardbell.com
Technical Specialist & SysAdmin
On-Line Services Group
Packard Bell Electronics, Inc.


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