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Switch ports up and down SG200-50P

Wyocat193
Level 1
Level 1

‎02-20-2013 01:43 PM - edited ‎03-07-2019 11:50 AM

My SG200-50P Switch Log appears as follows with Random ports going up and down. I am trying to find out if this links to another problem I'm having with a Client Server software locking up on the client end. The hardware, thin clients and desktops, are working and have checked all sleep and power settings. All items in working order, now I'm wondering about the switch

PLEASE help...

Thank You

John

2147483369 2013-Feb-20 15:12:07 Warning %STP-W-PORTSTATUS: gi19: STP status Forwarding

2147483370 2013-Feb-20 15:12:02 Informational %LINK-I-Up: gi19

2147483371 2013-Feb-20 15:12:00 Warning %LINK-W-Down: gi19

2147483377 2013-Feb-20 14:51:31 Informational %LINK-I-Up: gi45

2147483378 2013-Feb-20 14:51:28 Warning %LINK-W-Down: gi45

2147483379 2013-Feb-20 14:47:58 Warning %LINK-W-Down: gi47, aggregated (1)

2147483380 2013-Feb-20 14:47:58 Informational %LINK-I-Up: gi47

2147483381 2013-Feb-20 14:47:55 Warning %LINK-W-Down: gi47

2147483382 2013-Feb-20 14:31:56 Warning %STP-W-PORTSTATUS: gi15: STP status Forwarding

2147483383 2013-Feb-20 14:31:51 Informational %LINK-I-Up: gi15

2147483384 2013-Feb-20 14:31:50 Warning %LINK-W-Down: gi15

2147483385 2013-Feb-20 14:06:00 Warning %STP-W-PORTSTATUS: gi39: STP status Forwarding

2147483386 2013-Feb-20 14:05:55 Informational %LINK-I-Up: gi39

2147483387 2013-Feb-20 14:05:53 Warning %LINK-W-Down: gi39

2147483388 2013-Feb-20 14:05:16 Warning %STP-W-PORTSTATUS: gi3: STP status Forwarding

2147483389 2013-Feb-20 14:05:11 Informational %LINK-I-Up: gi3

2147483390 2013-Feb-20 14:05:10 Warning %LINK-W-Down: gi3

2147483391 2013-Feb-20 14:05:05 Warning %STP-W-PORTSTATUS: gi37: STP status Forwarding

2147483392 2013-Feb-20 14:05:00 Informational %LINK-I-Up: gi37

2147483393 2013-Feb-20 14:04:58 Warning %LINK-W-Down: gi37 2147483369 2013-Feb-20 15:12:07 Warning %STP-W-PORTSTATUS: gi19: STP status Forwarding
2147483370 2013-Feb-20 15:12:02 Informational %LINK-I-Up: gi19
2147483371 2013-Feb-20 15:12:00 Warning %LINK-W-Down: gi19
2147483377 2013-Feb-20 14:51:31 Informational %LINK-I-Up: gi45
2147483378 2013-Feb-20 14:51:28 Warning %LINK-W-Down: gi45
2147483379 2013-Feb-20 14:47:58 Warning %LINK-W-Down: gi47, aggregated (1)
2147483380 2013-Feb-20 14:47:58 Informational %LINK-I-Up: gi47
2147483381 2013-Feb-20 14:47:55 Warning %LINK-W-Down: gi47
2147483382 2013-Feb-20 14:31:56 Warning %STP-W-PORTSTATUS: gi15: STP status Forwarding
2147483383 2013-Feb-20 14:31:51 Informational %LINK-I-Up: gi15
2147483384 2013-Feb-20 14:31:50 Warning %LINK-W-Down: gi15
2147483385 2013-Feb-20 14:06:00 Warning %STP-W-PORTSTATUS: gi39: STP status Forwarding
2147483386 2013-Feb-20 14:05:55 Informational %LINK-I-Up: gi39
2147483387 2013-Feb-20 14:05:53 Warning %LINK-W-Down: gi39
2147483388 2013-Feb-20 14:05:16 Warning %STP-W-PORTSTATUS: gi3: STP status Forwarding
2147483389 2013-Feb-20 14:05:11 Informational %LINK-I-Up: gi3
2147483390 2013-Feb-20 14:05:10 Warning %LINK-W-Down: gi3
2147483391 2013-Feb-20 14:05:05 Warning %STP-W-PORTSTATUS: gi37: STP status Forwarding
2147483392 2013-Feb-20 14:05:00 Informational %LINK-I-Up: gi37
2147483393 2013-Feb-20 14:04:58 Warning %LINK-W-Down: gi37

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1 Reply 1

Wilson Bonilla
Level 3
Level 3

‎02-27-2013 08:34 PM

Hello John.

The possible reason of event status change are:

Due to a hardware... or you have some one behind doing shut and no shut to the interfaces.

Speed and/or duplex mismatch.

Those messages regarding STP are just one consecuence of the first...

Let's start troubleshooting layer 1,

- Make sure cables are fine.

- If cables are ok, then swap the cable, move it to another interfaces and check if the issue follow the cable or follow the interfaces.

Now you know if the new interfaces where you plugged the cable if the issue stops then you know you have a problem with the interfaces, if it's still giving the same problem, swap the cable with a good one,

if still no good, then check duplex and speed, and make sure that it's configured properly in BOTH sides.

if it's a fiber link, then check fiber cable and transceiver.

I want to share with you this link, it's a good one to have for this kind of issues:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015bfd6.shtml

Keep me posted.

Wilson B.

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