Messages in this thread |  | | Date | Thu, 19 Sep 1996 12:31:51 +0200 | From | Rob van Nieuwkerk <> | Subject | Re: 2.0.20: ppp0 ifconfig errors |
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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 ?
Greetings, Rob van Nieuwkerk
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