[c-nsp] C3750G Stacking

Mon Oct 5 11:29:15 EDT 2015

Hi Guys,

I currently have a C3750G-48TS-S running and working fine.  I am attempting
to add a second C3750-48TS-S as a slave into a stack.

1) Both switches confirmed to be identical platforms
2) Both switches confirmed to be running identical IOS
3) Stacking cables connected correctly,
3.1) SW01 port 1 to SW02 port 2
3.2) SW01 port 2 to SW02 port 1
4) Stacking cables has been double and tripple checked to be connected
correctly, and securely.

SW01 (the master)
switch 1 provision ws-c3750g-48ts
switch 2 provision ws-c3750g-48ts

SW01#sh switch detail
Switch/Stack Mac Address : 0026.52e8.f980
                                           H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
*1       Master 0026.52e8.f980     15     0       Ready
 2       Member 0000.0000.0000     0      0       Provisioned

         Stack Port Status             Neighbors
Switch#  Port 1     Port 2           Port 1   Port 2
--------------------------------------------------------
  1       Down       Down             None     None

This however, bothers me:
SW01#sh switch stack-ring speed

Stack Ring Speed        : 16G
Stack Ring Configuration: Half
Stack Ring Protocol     : StackWise

When I boot up SW02, the switch detects that it is switch 2 in the stack,
but it shuts down stacking ports, and becomes master, instead of slave...

Cisco IOS Software, C3750 Software (C3750-IPBASEK9-M), Version 12.2(40)SE,
RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Fri 24-Aug-07 00:53 by myl
Image text-base: 0x00003000, data-base: 0x01380000

Initializing flashfs...

flashfs[1]: 450 files, 7 directories
flashfs[1]: 0 orphaned files, 0 orphaned directories
flashfs[1]: Total bytes: 32514048
flashfs[1]: Bytes used: 10718720
flashfs[1]: Bytes available: 21795328
flashfs[1]: flashfs fsck took 2 seconds.
flashfs[1]: Initialization complete....done Initializing flashfs.

POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed

POST: PortASIC Memory Tests : Begin
POST: PortASIC 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

SM: Detected stack cables at PORT2

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

front_end/ (directory)
extracting front_end/fe_type_1 (34696 bytes)
extracting front_end/fe_type_2 (54584 bytes)
extracting front_end/front_end_ucode_info (86 bytes)
extracting ucode_info (76 bytes)
POST: PortASIC CAM Subsystem Tests : Begin
POST: PortASIC CAM Subsystem Tests : End, Status Passed

POST: No Cable found on stack port 1

POST: PortASIC Stack Port Loopback Tests : Begin
POST: Found Stack port 1 Down
POST: Found Stack port 2 Down
POST: Skipping Stack port External loopback
POST: PortASIC Stack Port Loopback Tests : End, Status Passed

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

Election Complete
Switch 2 booting as Master
Waiting for Port download...Complete

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cisco WS-C3750G-48TS (PowerPC405) processor (revision F0) with
118784K/12280K bytes of memory.
Processor board ID FOC1129Z26Y
Last reset from power-on
1 Virtual Ethernet interface
52 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:1C:B1:E8:96:00
Motherboard assembly number     : 73-10218-08
Power supply part number        : 341-0107-01
Motherboard serial number       : FOC112902Z8
Power supply serial number      : AZS1126122P
Model revision number           : F0
Motherboard revision number     : C0
Model number                    : WS-C3750G-48TS-S
System serial number            : FOC1129Z26Y
Top Assembly Part Number        : 800-26857-02
Top Assembly Revision Number    : A0
Version ID                      : V04
CLEI Code Number                : COM7X10ARA
Hardware Board Revision Number  : 0x09

Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
*    2   52     WS-C3750G-48TS     12.2(40)SE              C3750-IPBASEK9-M

Failed to generate persistent self-signed certificate.
    Secure server will use temporary self-signed certificate.

Press RETURN to get started!

00:04:41: %STACKMGR-4-SWITCH_ADDED: Switch 2 has been ADDED to the stack
00:04:43: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed
state to down
00:04:45: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
00:04:48: %SYS-5-CONFIG_I: Configured from memory by console
00:04:48: %STACKMGR-5-SWITCH_READY: Switch 2 is READY
00:04:48: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed
to state DOWN
00:04:48: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed
to state DOWN
00:04:48: %STACKMGR-5-MASTER_READY: Master Switch 2 is READY
00:04:49: %SYS-5-RESTART: System restarted --
Cisco IOS Software, C3750 Software (C3750-IPBASEK9-M), Version 12.2(40)SE,
RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Fri 24-Aug-07 00:53 by myl
00:04:49: %LINK-5-CHANGED: Interface Vlan1, changed state to
administratively down

Google seems to be full of issues similar to this, but they're not really
forth coming with a solution to the issue.

Rebooting SW01 (current master), is out of the question.  SW02 (the slave)
can have anything done to it at this point in time.

-- 

Regards,
Chris Knipe