Hi,
I have a QNX 4.25 system running 4.25H of Proc32 and 4.24A of
Net.ether21x4x.
Every once in a while I lose the ability to telnet to the QNX 4.25 machine
from a certain range of IP addresses that go through a switch until I reboot
the QNX 4.25 machine. But I can telnet fine from other IP addresses that
are on the same subnet. Yet in all cases, I can ping just fine.
What could be causing this? I would have suspected inetd were it not for
the fact that IP addresses on the same subnet always work.
What do you see when the telnet fails, e.g. is there a login prompt?
Did the QNX machine have all its ttyps used up?
Did you try rebooting the switch instead? (Don’t laugh)
“Shawn S.” wrote:
Hi,
I have a QNX 4.25 system running 4.25H of Proc32 and 4.24A of
Net.ether21x4x.
Every once in a while I lose the ability to telnet to the QNX 4.25 machine
from a certain range of IP addresses that go through a switch until I reboot
the QNX 4.25 machine. But I can telnet fine from other IP addresses that
are on the same subnet. Yet in all cases, I can ping just fine.
What could be causing this? I would have suspected inetd were it not for
the fact that IP addresses on the same subnet always work.
As it turns out, one of our clients is leaking duplicate IP addresses across
our link with them. Both the switch and various machines got a different
hardware address in their ARP tables!
Now I have to figure out how to make them behave…
“Richard R. Kramer” <rrkramer@kramer-smilko.com> wrote in message
news:3B464EEC.DD050546@kramer-smilko.com…
What do you see when the telnet fails, e.g. is there a login prompt?
Did the QNX machine have all its ttyps used up?
Did you try rebooting the switch instead? (Don’t laugh)
“Shawn S.” wrote:
Hi,
I have a QNX 4.25 system running 4.25H of Proc32 and 4.24A of
Net.ether21x4x.
Every once in a while I lose the ability to telnet to the QNX 4.25
machine
from a certain range of IP addresses that go through a switch until I
reboot
the QNX 4.25 machine. But I can telnet fine from other IP addresses
that
are on the same subnet. Yet in all cases, I can ping just fine.
What could be causing this? I would have suspected inetd were it not
for
the fact that IP addresses on the same subnet always work.