smitty@essnj1.ESSNJAY.COM (Hibbard T. Smith JR) (03/15/91)
At a particulr site, we have 4 systems running ISC 2.2. 2 of them are 33 Mhz. 386 ALR's, 1 is an Intel 25 Mhz 386 , and the new one is a 33 Mhz 486 ALR power cache 4/e. They all use Adaptec 1542-a/b host adapters to run disks and an Archive 2150s tape drive. For network support, they all use 3-COMM 3C503 (Etherlink 2) cards. The first 3 work great, reliable networking and all, including FTP. The new one's FTP server doesn't work at all. You can log into it from another machine, but you can't do anything which requires an outbound data transfer. The message seen at the client is: "421 Service not supported. Server disconnected" Inbound traffic works fine, and running the server at another machine to this client is also fine. All other networking appears to work fine. We have torn apart all the config files and can't find any errors. We're running FTPD from INETD with the -d and -l options. No error messages appear in the errlog or message files. Multi User Systems (our distributor in Hollis NH) says "must be hardware". I'm willing to buy that as a possibility, but what hardware? I also believe hardware's unlikely since NFS and rcp file xfers work fine both ways, and use all the same hardware paths. I have personally moved ~200 MB of data to this system with NFS (mounted file systems). The software is identical on all the affected systems also. I'd sure appreciate any help or advice on this one, as I'm about out of ideas. ;-( Thanks in advance for any and all help. -- Smitty ------------------------------------------- Hibbard T. Smith JR smitty@essnj1.ESSNJAY.COM ESSNJAY Systems Inc. uunet!hsi!essnj1!smitty
romkey@ASYLUM.SF.CA.US (John Romkey) (03/17/91)
Here's a guess... SCO uses Lachman's TCP. ISC bought Lachman (much to SCO's consternation, I expect). I see a similar problem on my SCO system sometimes. One thing that brings it out is if my system can't resolve the hostname of the client. So, verify that it can resolve your client's hostname (try telneting to the ISC system and then netstat to see if the name is listed). If it can't, try reconfiguring your system so it can and try it again. I doubt *very* much that it's a hardware problem. If it is, it's probably something like an ethernet board that drops packets and is consistently dropping a packet. Are you using a 3C501? Anyway, I do doubt it's a hardware problem. - john romkey Epilogue Technology USENET/UUCP/Internet: romkey@asylum.sf.ca.us voice/fax: 415 594-1141