Linux-kernel mailing list archive 2000-01,: Re: 2.0.3[58] network problem

# Re: 2.0.3[58] network problem

Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 4 Jan 2000 00:29:21 +0000 (GMT)

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> hardware, and leaving the kernel (2.0.35), etc., intact. We're now
> experiencing a strange problem with ftp service - most bulk transfers seem
> to stall after a few K and stay that way. The tcpdumps I've done remotely
> show the remote end not receiving segments and repeatedly acking an old
> segment. Users report similar problems with bulk web transfers. Upgrading
> to 2.0.38 didn't help. Swapping network interfaces didn't either.
> Everything else appears to be normal, including interactive network
> sessions and transfers to the system.
>
> Any suggestions short of moving the system to 2.2? (Which I hope to do
> before the end of the month, but may not have time for.)

If your tcpdump shows that you are sending the frames out, another box
on the same segment of the lan sees it and your remote users dont then the
problem will be elsewhere.

If the host thinks the packet is being sent but nobody local sees it check
the hub port, cable etc. If its seen locally and vanishes when it hits the
internet check for broken firewall setups

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