04-13-2009 04:39 PM - edited 03-06-2019 05:09 AM
Hi,
The following messages are in the log and I don't make any operation in it.I want to know that whether the stack ports can be changed themselves or by somebody else:
.Apr 13 17:15:16: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state UP
.Apr 13 17:15:16: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 2 Switch 3 has changed to state UP
.Apr 13 17:23:42: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state DOWN
.Apr 13 17:23:44: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state UP
.Apr 13 17:23:45: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 2 Switch 3 has changed to state DOWN
.Apr 13 17:23:45: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state DOWN
.Apr 13 17:24:27: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 2 Switch 3 has changed to state UP
.Apr 13 17:24:28: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state UP
.Apr 13 18:54:34: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state DOWN
.Apr 13 18:54:35: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 2 Switch 3 has changed to state DOWN
.Apr 13 21:45:21: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 2 Switch 3 has changed to state UP
.Apr 13 21:45:23: %STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 4 has changed to state UP
Thank you very much!
04-14-2009 12:44 AM
they are just like any other port in the switch.
if you have a lot of that type of loggs as you seem to have i would check that the cable is fastened propperly if it is then I would exchange the (most likely faulty) cable.
if it continues after doing the above then I would look at the environment (electric cables close to it and such if it is not that then the switch, and exchange one of the switches as you then most likely have a faulty port. if it continues after the switchchange then it is most likely the remaining switch. (ie the one of 3 or 4 you left behind) test it towards another switch. if you find it to show the symptoms, bag and tag to send back for exchange/repairs on the warranty contracts.
04-14-2009 01:45 AM
Make sure the stacking cables are screwed properly and inserted correctly. From the errors you have here, it does NOT look like a switch has a bad stacking system.
12-09-2009 04:08 AM
Hi,
i have the exact issue with two 3750-e switches
Dec 9 13:06:39.680 CET: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Dec 9 13:06:42.071 CET: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN
Dec 9 13:06:43.094 CET: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP
Dec 9 13:06:53.781 CET: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Dec 9 13:06:55.794 CET: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
This message is beeing generated almost every second.
The stack seems ok, though
sh switch detail
Switch/Stack Mac Address : ec30.9159.c880
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 0021.a0ec.2980 15 1 Ready
*2 Master ec30.9159.c880 1 1 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 2
2 Ok Ok 1 1
Why is this message beeing generated?
12-09-2009 04:42 AM
this issue could be because of lose stack wise cable at the back or a faulty one.
.
12-09-2009 04:54 AM
Hi,
Check out the following observation
The problem could be due to the following:
1) The Gigastack cable is not properly connected.
2) Bad Gigastack Cable.
3) Bad Gigastack port on switch.
Recommended Action:
1) Double check the connection of the Gigastack cable and port.
2) Try a known working Gigastack cable.
3) Reload the Switch.
4) If the issue persists, it could be due to h/w failure.
Hope this will help
Regards
Ganesh.H
12-10-2009 10:15 PM
Hi,
we replaced one of the stack cable and the error message is gone. Thank you
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