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Question--

How much of TCP/IP is awake and functioning when the iSeries is rebooted in manual mode and stopped at DST (Dedicated Service Tools)?

I made brief search thru the archives but didn't find anything that seemed to address this issue.

The problem--

We had our machine down over the weekend for repairs. The CE had the machine up to DST and back down a few times over a 3 hour period. During that time it appears that some SMTP mail transactions and some FTP uploads disappeared.

The business partner that sent us the SMTP transactions (dedicated circuit) states that the transmission was normal, with no hangups reported. The log file on the FTP system shows that 3 upload attempts were made. Yet none of these made it to the mailbox or the target file.

One theory is that TCP/IP is awake enough to acknowledge the attempted transactions, but not enough to actually -do- anything with them; they end up in the bit bucket.

Our systems manager doesn't think so; the network group polls the SMTP servers to see if they're alive; the iSeries gave no response until the system was all the way up and the subsystems were started.

My (perhaps warped) understanding is that TCP/IP has to be awake enough to talk to the PC-attached console (thru the dedicated special port); it's also awake enough to listen on other ethernet connections (which is why, as I understand it, SST and DST now come equipped with profiles and passwords).

Can anyone shed any light on the behavior of TCP/IP and maybe explain where these transactions might have gone?

Thanks!

Paul E Musselman
PaulMmn@xxxxxxxxxxxxxxxxxxxx

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