Messages in this thread | | | Date | Tue, 29 Jul 1997 12:42:22 +0200 | From | Gerd Knorr <> | Subject | Re: slow tcp with isdn |
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>> Can they get lost *after* tcpdump has >> seen them? Becauce of a bad checksum or something? How to check this? >> >Checksum. Look at the kernel syslog and/or /proc/net/snmp.
Syslog says nothing. ifconfig ippp0 says 0 rx/tx errors, so does /proc/net/snmp for ip. But ip checksum is the ip header only, right?
I grep'ed net/ipv4/tcp*.c for a bad-checksum-printk(), but hav'nt found one. Does the 2.0.30 kernel log and/or count bad tcp packets? If not, is there any way to do this?
/proc/net/snmp has no somethingError entry for tcp. But there is a RetransSegs entry. This one lists 5. Hmm... Is this incoming? outgoing? both?
Gerd
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