3750-X Stacking

[adamgibs7]

Dears,

I have a 3750-X switch with LAN base license, i see the stack ports are down i tried to upgrade the IOS switch but still no luck, how i can know if the cables are faulty, what else are the chances for these port to not come up.when i reload the switch it shows me the below messages but infact the 2 switches doesn't form a stack.

Thanks

[Julio E. Moisa]

Hi

You can execute the command:

sh switch stack-ports

sh switch neighbors

[adamgibs7]

Dears,

I have changed the cables but still the ports are down, how to segregate the problem where it is

thanks

[Julio E. Moisa]

Hi

This link could be useful:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/switch_stacks.html#wp39498

If the problem persists it could be faulty stack port or you could open a case with the Cisco TAC.

Hope it is useful

:-)

[adamgibs7]

Dears,

If you'll can see when the switch reloads it checks the stack ports and it founds up and then it says for electing as a master when all this process happen at last it come up only with one switch as seen in below output

oor#reload
Proceed with reload? [confirm]

Using driver version 3 for media type 2
Base ethernet MAC Address: XX:XX:XX:XX:XX:00
Xmodem file system is available.
The password-recovery mechanism is enabled.
Initializing Flash...
mifs[2]: 12 files, 1 directories
mifs[2]: Total bytes     :    2097152
mifs[2]: Bytes used      :     755200
mifs[2]: Bytes available :    1341952
mifs[2]: mifs fsck took 1 seconds.
mifs[3]: 0 files, 1 directories
mifs[3]: Total bytes     :    4194304
mifs[3]: Bytes used      :       1024
mifs[3]: Bytes available :    4193280
mifs[3]: mifs fsck took 2 seconds.
mifs[4]: 5 files, 1 directories
mifs[4]: Total bytes     :     524288
mifs[4]: Bytes used      :       9216
mifs[4]: Bytes available :     515072
mifs[4]: mifs fsck took 0 seconds.
mifs[5]: 5 files, 1 directories
mifs[5]: Total bytes     :     524288
mifs[5]: Bytes used      :       9216
mifs[5]: Bytes available :     515072
mifs[5]: mifs fsck took 1 seconds.
mifs[6]: 503 files, 11 directories
mifs[6]: Total bytes     :   57671680
mifs[6]: Bytes used      :   40247808
mifs[6]: Bytes available :   17423872
mifs[6]: mifs fsck took 24 seconds.
...done Initializing Flash.
done.
Loading "flash:c3750e-universalk9-mz.150-2.SE10a.bin"...@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
File "flash:c3750e-universalk9-mz.150-2.SE10a.bin" uncompressed and installed, entry point: 0x3000
executing...

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Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 15.0(2)SE10a                                                                                        , RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Thu 03-Nov-16 13:36 by prod_rel_team
HULC:Collect Entropy thread starting on box...
Initializing flashfs...
Using driver version 3 for media type 1
Using driver version 3 for media type 2
mifs[6]: 12 files, 1 directories
mifs[6]: Total bytes     : 2097152
mifs[6]: Bytes used      : 755200
mifs[6]: Bytes available : 1341952
mifs[6]: mifs fsck took 0 seconds.
mifs[6]: Initialization complete.

mifs[7]: 0 files, 1 directories
mifs[7]: Total bytes     : 4194304
mifs[7]: Bytes used      : 1024
mifs[7]: Bytes available : 4193280
mifs[7]: mifs fsck took 0 seconds.
mifs[7]: Initialization complete.

mifs[8]: 5 files, 1 directories
mifs[8]: Total bytes     : 524288
mifs[8]: Bytes used      : 9216
mifs[8]: Bytes available : 515072
mifs[8]: mifs fsck took 0 seconds.
mifs[8]: Initialization complete.

mifs[9]: 5 files, 1 directories
mifs[9]: Total bytes     : 524288
mifs[9]: Bytes used      : 9216
mifs[9]: Bytes available : 515072
mifs[9]: mifs fsck took 0 seconds.
mifs[9]: Initialization complete.

mifs[10]: 503 files, 11 directories
mifs[10]: Total bytes     : 57671680
mifs[10]: Bytes used      : 40247808
mifs[10]: Bytes available : 17423872
mifs[10]: mifs fsck took 1 seconds.
mifs[10]: Initialization complete.

...done Initializing flashfs.
Checking for Bootloader upgrade..
Boot Loader upgrade not required (Stage 2)


FIPS: Flash Key Check : Begin
FIPS: Flash Key Check : End, Not Found, FIPS Mode Not Enabled

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

extracting front_end/front_end_ucode_info (309 bytes)
SM: Detected stack cables at PORT1

Waiting for Stack Master Election...
SM: Waiting for other switches in stack to boot...
################################################################################                                                                                        #######################################
SM: All possible switches in stack are booted up

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: PortASIC Macsec Loopback Tests : Begin
POST: PortASIC Macsec Loopback Tests : End, Status Passed

POST: EMAC Loopback Tests : Begin
POST: EMAC Loopback Tests : End, Status Passed

Election Complete
Switch 1 booting as Master
Waiting for Port download...Complete


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cisco WS-C3750X-48P (PowerPC405) processor (revision T0) with 262144K bytes of memory.
Processor board ID XX:XX:XX:XX:XX:00
Last reset from power-on
1 Virtual Ethernet interface
1 FastEthernet interface
52 Gigabit Ethernet interfaces
2 Ten Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : XX:XX:XX:XX:XX:00
Motherboard assembly number     : 73-12553-12
Motherboard serial number       :00000000
Model revision number           : T0
Motherboard revision number     : A0
Model number                    : WS-C3750X-48P-S
Daughterboard assembly number   : 800-32727-03
Daughterboard serial number     : 000000000
System serial number            :00000000
Top Assembly Part Number        : 800-31324-09
Top Assembly Revision Number    : F0
Version ID                      : V06
CLEI Code Number                : 00000000
Hardware Board Revision Number  : 0x05


Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 54    WS-C3750X-48P      15.0(2)SE10a          C3750E-UNIVERSALK9-M



sh switch
Switch/Stack Mac Address : XXXX.XXXX.0000
                                           H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
*1       Master XXXX.XXXX.0000     15     3       Ready

[Julio E. Moisa]

Hi

Have you replaced the stack cables?

[adamgibs7]

yes from a working stack removed the cable and tested but still the situation same.

[Julio E. Moisa]

That is not a normal behavior, if you still have contract you could open ticket with the TAC, one of  the stack ports could be the cause. 

[adamgibs7]

now the question is which switch stack ports are faulty how i can know them ?? i have a stack of 2 switches.

thanks

[Reza Sharifi]

Hi,

When the stack ports are down, usually there is physical issue and not IOS related.  Check to make sure the stack cables are inserted into the slots all the way. Also, make sure the screws are tighten.

HTH

[Suresh Vinayagam Subramanian]

Hi ,

Mostly it  could be due to stack cable or stack port issue on switch . Most of the time remove and refix the stack cable properly will fix this issue .

Otherwise try swap known working stack cable and switches to narrow down further.

Also you can use " show switch details" command to identify stack port, neigbhbor and switch role details.

HTH
Regards,
VS.Suresh.
*Plz rate the usefull posts *

[Joseph W. Doherty]

I recall (?) LAN base will only stack with LAN base.  Both switches have the same IOS version, same image, and same license?