Why not to try another NIC?

Att.
Ronald Gonzalez

--- "Joel V." escribió:

> Hello all,
>
> I'm not experiencing this problem, my friend is.
> He's simply too pissed off
> to write here and I'm afraid he's going to set his
> office on fire if he
> doesn't solve the problem soon, so without further
> ado, here's the problem:
>
> He has two fbsd boxes, main server running 6.1 and
> dns server running 4.3.
> He has 4 public IPs which he can use and the main
> server is running on
> x.x.x.122. He's main box is NOT acting as a
> gateway/NAT box in the office.
> Today he noticed that net is getting awfully slow.
> Sometimes there would be
> 50% pl when pinging, sometimes pinging would be all
> OK, but SSH is dead-slow
> and the webpages running on the main server are not
> displaying. E-mails are
> not going through. He calls the ISP, who say that
> his network is showing
> major uploading activity. He switches off networking
> services one by one in
> the main box but situation does not improve. He
> disconnects the main server
> and puts a windows xp box instead, which seems to
> run fine. He puts back the
> freebsd box, disables all networking services again
> except for SSH and
> connects the network: instant 100% networking
> slow-down. He tried to change
> the switch, thinking it's faulty. He disconnect
> every other computer in the
> office from the network: nothing. He put the public
> IP address on the
> second, internal network NIC: same thing. Now it
> gets really mysterious: he
> puts the old dns server with the x.x.x.122 IP and
> instantly it becomes slow
> as death. The logical conclusion would be that
> someone is flooding that IP?
> Only the windows xp box seemed to work fine and the
> ISP guy said it was
> upload bandwidth that was excessive...
>
> Netstat -a doesn't show anything interesting, arp -a
> doesn't show any
> incomplete addresses He tried to build and install a
> new fresh kernel.
> Nothing. This is the most creepy networking problem
> I've heard of. Can YOU
> help? Any ideas where to start looking?
>
> I'm not in the freebsd-hackers list, so if you want
> the e-mail to reach me,
> send a copy to joel@spirit.ee
>
> Thank you in advance!
> Joel
>
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>

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