Re: Servers Timeout Issue!!! HELP!!

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Hello Ifti,

Some time ago we halso problems with internal communication between servers and also clients. We figured out that it was caused by our CISCO 4 switch stack, even after reloading all switches the problems come back, so we started one by one and at the end we started changing the stack cable, because in the switch evenlog where some strange errors between 2 switch stack ports. After changing the cable and reloading the switches everything was fine.

Best regards

Meinolf Weber
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I have a new issue thats arisen today, and Im stumped......

My network consists of windows 2003 servers (13 servers, 1 DC) and XP
Pro clients. Everythings been running fine up until today.

Around 12.30pm today, we started experiencing communication issues.
This is affecting the entire network. Basically, when I ping across
the network, even if I ping from one server to another, I get some
replies and some timeouts. Its very intermittent. I may get 2 replies,
then 2 timeouts, or 1 timeout and 3 replies, and so on. The connection
seems to come and go.

This is occuring with all servers, not just one or two. As a result,
clients cant keep their connection, and keeping hanging etc.

Ive tried the following so far....

1. Checked services on the DC - all are running fine.
2. Checked DNS, service seems to be running fine. Also when I ping,
the
host name is resolved correctly.
3. Checked DHCP and all is fine.
4. Checked Event Viewer on the DC, all seems fine. Just he few odd
errors where clients arent able to connect properly.
5. Checked my core switch, which seems to be flashing away nicely as
though its working.
6. Ive checked the CISCO switches across the network (2950's) since I
thought some packets may be bouncing around in a loop somewhere,
consuming bandwidth, and when I can connect to them, they are
reporting
bandwidth usage as being very low.
7. Tried removing the servers from the core switch (HP) and placing
them all on their own switch, and pinging between servers is still
intermittent.
8. Ive contacted our ISP who manage our firewall, and have asked if
they are finding anything strange hitting the firewall - they are yet
to get back to me....
The only thing I can think of is a hardware error with the core
switch, but I dont want to replace it unless Im certain thats where
the issue lies.

Any ideas what could suddenly cause this, when no network changes etc
have been made at all?

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