TCP blockage in 2.1.112?

John Hayward-Warburton (linux@billabong.demon.co.uk)
Sun, 2 Aug 1998 17:39:05 +0000 (GMT)


Hello, all. A strange thing happened today on 2.1.112 with a recent
CVS ipppd working with a Teles/Siemens ISDN 16.3 driver.

The machine had been up for a few days, no problems; then, while
uploading by ftp a large file to my ISP, all the TCP stuff seemed to
choke after a very short time. Pings worked fine, but ftp, telnet,
http, all crawled rather than ran. It seemed as if the ftp queue
filling up choked all TCP... yet nothing was flowing (as measured by
ifconfig). Any idea how I can diagnose this?

Pings working, and quickly too, was the strange thing. A reboot
(ouch! Too much like a famous company's product) cured everything.

One more query... when FTP-ing something, and turning 'hash on', the
ftp program gives me about thirty hash-es immediately, as if
measuring what has been sent into some buffer rather than measuring
how many 1024-byte blocks had actually arrived. Should I be
expecting this?

Thanks for your time.

John Hayward-Warburton
linux@billabong.demon.co.uk

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