cm@jet.uucp (colin manning) (06/03/91)
I'm having some problems with TCP/IP on ISC 2.2.1 on a 486/33 EISA box with a WD8003E card. Problem is general unreliability, such as FTP sessions which report 'bind error 113' whenever an attempt is made to do something which involves opening a data connection, and rlogin sessions to the ISC box which work first time, and then fail on successive occasions. It has been noted that doing simple tests with ping often results in many missed ping sequence numbers. E.g getting the machine to ping itself often produces ping sequences with very regular missed packets (e.g 0,1,3,4,6,7,9,10,12,13, ... or 2,5,8,11,14,...). Other times ping'ing itself seems to work, and then you miss a large number of consecutive pings. Pinging other machines from the ISC box produces similar results. Pinging localhost works correctly however. Pinging the ISC box from other machines running, say, PC/TCP, does however seem to work fine. What is most interesting is that the other machines often report received packets with protocol errors, invalid IP version number field, checksum errors etc. This is reported by other machines running various TCP's such as SCO Unix and PC/TCP 2.05. The hardware is known to be not at fault as it works fine with SCO Unix TCP, PC/TCP 2.05 and the WD diagnostics. Only when running ISC do the problems seem to occur. Any ideas gratefully received! -- - Colin Manning, cm%jet.uucp@ukc.ac.uk (world) OR cm@jet.uucp (UK only) - Disclaimer: Please note that the above is a personal view and should not be construed as an official comment from the JET project.