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Network Connection Dropping

Medium Priority
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Last Modified: 2013-11-09
I have fiber running to a building next door and I keep losing connectivity to a server in that building. The fiber plugs into a Netgear FS517TS 17-port switch then has 7 Netgear FS524S switches daisy chained to it.  When I connect the server to the first switch I have no problem pinging it all day long, but when I connect it to any of the FS524's connected to it I lose connectivity several times a day. Today is bad, I'm losing about every 12th ping packet.  What is the best way to troubleshoot this?
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Commented:
Have you changed the fiber or cable that jumps from switch one to the second switch?

I'd first swap out cables connecting the switches one by one until I find out which switch(es) have the problems. Did this just start happening or are these switches new & the problem is new?

Author

Commented:
This started happening a couple of months ago but it has been getting worse lately. The switches are 4 or 5 years old.

Commented:
Ok, here's what I'd do:

1. Swap out the cross over cables/fiber from the first switch down.

2. Check each switch ports for errors to see which ports are causeing the errors.

3. Make sure the port duplex settings are the same & no QoS has been turned on by mistake

4. Finally, I'd upgrade the switches firmware to the same version if they are the same type of switches, if not, upgarde them to the newest..
I isolated the problem, utilizing a previously unused fiber link to that building and a couple of extra network switches, to a group of computers in the media center.

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