I've seen symptoms like this that are the result of the switch deciding
the port is behaving badly (by some weird and unknown algorithm).
The cause can either be the switch or the NIC or just a bad cable
connection. So I would first try to plug the machine into a different
port on the switch and then if the machine has two ethernet cards swap
the internal and external configurations and wires and see if the
problem follows.
Joe
On 4/14/13 11:04 PM, Mahmood Naderan wrote:
Hi
There are machines (one is ubuntu and the other is SL6.3). Both of
them are connected to the same switch for internet connection. As a
result their IP address look like A.B.C.105 and A.B.C.104.
Problem is, while I am working with SL6.3 through ssh, I see frequent
and long connection time out. Indeed I m not able to ping to SL6.3
while at the same time I can ping the ubuntu machine.
It is hard to pinpoint the problem. Fortunately, these two machines
are connected via an internal switch with 192.168 ip addresses. So in
case of connection time out, I can login first to ubuntu and then ssh
to SL6.3 via internal ip address. But that doesn't solve my problem
because I need to transfer files.
I have attached a screen shot from the ping command to both machines.
Sorry for the very low quality since I have to lower the attachment
size. How can I diagnose more?
Regards,
Mahmood*
*
xxx
