03-25-2012 08:24 PM - edited 03-07-2019 05:46 AM
Hi,
End user has two new 3750E switches. At the begining were working fine but suddenly loggs began showing the following messages
ar 24 17:32:02: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN
Mar 24 17:32:03: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP
Mar 24 17:32:33: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 17:32:34: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Mar 24 17:35:15: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 17:35:16: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Mar 24 18:01:35: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 18:01:36: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Mar 24 17:32:02: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN
Mar 24 17:32:03: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP
Mar 24 17:32:33: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 17:32:34: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Mar 24 17:35:15: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 17:35:16: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Mar 24 18:01:35: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
Mar 24 18:01:36: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
I have powered down both switches and checked stack cables connection, but the problem remains.
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 54 WS-C3750E-48PD 12.2(52)SE C3750E-UNIVERSALK9-M
2 54 WS-C3750E-48PD 12.2(52)SE C3750E-UNIVERSALK9-M
What else can I checked in order to clear this issue?
regards
03-25-2012 09:45 PM
Make sure the stack cables are secure.
Judging from the error messages, looks like Switch #2 is faulty.
03-26-2012 12:45 AM
With help of # show switch detail command you can see the status of the stack cable connetivity. Please verify and put output for reference.
03-26-2012 11:09 AM
Hi Tirumala,
This is the output I got some minuetes ago,
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 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
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 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
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 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
**************************************************************************************
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 1 1 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 2
2 Ok Down None None ------------>>> sometimes DOWN
********************************************************
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 1 1 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 None --------------------------------------->>> ????
2 Ok Ok 1 1
COREP5#
**************************************************************
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 1 1 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 2
2 Ok Ok None None ---------->>>>>> ??????
COREP5# sh switch detail
Switch/Stack Mac Address : 0c85.25c3.9400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0c85.25c3.9400 10 1 Ready
2 Member 0c85.25c2.b480 1 1 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 None ---------->>>????
2 Ok Down 1 None --->>>>>>???
COREP5#
03-26-2012 02:20 PM
Judging from this latest output, my initial recommendations are still the same:
1. Have you check to ensure all four cable sockets are firmly secure to each stack port?
2. Stack member #2 is failing. You could try a disruptive test if wish. Command is: diagnostic start switch 2 test all
WARNING: This is a DISRUPTIVE test.
Post the output to the command "sh diagn result switch 2".
03-26-2012 02:45 PM
Hi Leo,
Thanks a lot for your interest in this issue.
I have already checked several times all cable sockets. I powered off both switches and disconnected cables, then connect once again firmly secure.
Because of is a DISRUPTIVE test I need to try in no working hours. :-(
regards
03-26-2012 03:41 PM
Thanks. I await for your response and result.
03-27-2012 02:14 PM
May I also ask you to post the output to the command "sh post" please?
03-27-2012 02:23 PM
Hi leo,
I send you the sh post info:
I'm waiting the maintenance windows in order to get the info you asked me.
I really appreciate your time and help.
COREP5#sh post
Stored system POST messages:
Switch 1
---------
POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed
POST: MA BIST : Begin
POST: MA BIST : End, Status Passed
POST: TCAM BIST : Begin
POST: TCAM BIST : End, Status Passed
POST: SF ASIC BIST : Begin
POST: SF ASIC BIST : End, Status Passed
POST: Switch Fabric Memory Tests : Begin
POST: Switch Fabric Memory Tests : End, Status Passed
POST: CPU MIC interface Loopback Tests : Begin
POST: CPU MIC interface Loopback Tests : End, Status Passed
POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed
POST: Inline Power Controller Tests : Begin
POST: Inline Power Controller Tests : End, Status Passed
POST: Thermal, Fan Tests : Begin
POST: Thermal, Fan Tests : End, Status Passed
POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed
POST: EMAC Loopback Tests : Begin
POST: EMAC Loopback Tests : End, Status Passed
Switch 2
---------
POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed
POST: MA BIST : Begin
POST: MA BIST : End, Status Passed
POST: TCAM BIST : Begin
POST: TCAM BIST : End, Status Passed
POST: SF ASIC BIST : Begin
POST: SF ASIC BIST : End, Status Passed
POST: Switch Fabric Memory Tests : Begin
POST: Switch Fabric Memory Tests : End, Status Passed
POST: CPU MIC interface Loopback Tests : Begin
POST: CPU MIC interface Loopback Tests : End, Status Passed
POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed
POST: Inline Power Controller Tests : Begin
POST: Inline Power Controller Tests : End, Status Passed
POST: Thermal, Fan Tests : Begin
POST: Thermal, Fan Tests : End, Status Passed
POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed
POST: EMAC Loopback Tests : Begin
POST: EMAC Loopback Tests : End, Status Passed
COREP5#
03-27-2012 02:32 PM
Hmmm ... "sh post" looks good. We'll see after the diagnostics.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide