Stack rebooting issue

support.info1 · ‎09-08-2016

Hi everyone !

I have a stack of 2 3650 that works fine. Each member has a number and its priority (switch 1 priority 1, switch 2 priority 2)

Recently I had to shut down this stack due to electric work. when I restarted the stack, the switch with priority 2 was the first to boot and seemed to be the active one for the stack.

But I couldn't explore my network.

I connected to console port on this switch a saw that it proposed me to create a basic configuration (the same as when you just but the switch and make the first start !)

I rebooted the 2 switche, making sure the first one with priority one was online first, and it ran ok !

How counld it be that my second switch "lost" the startup config to restore and lead the switch after being the first one to be ready ?

How can I verify this stack memeber has the same config files than the other ?

Thanks for help !

Austin Sabio · ‎09-08-2016

Switches participate in the election if they all boot-up within 20 to 60 seconds -depends on IOS version-. Otherwise, the first switch that boots will be the master.

To verify both switches have same config means they are part of the same stack.

Stack# show switch

Switch# Role     Mac Address     Priority Version State
 ----------------------------------------------------------
*1      Master   0018.ba60.de00     15      1     Ready
 2      Member   0018.ba60.ce00     14      1     Ready

Stack master and switch priority conflicts are resolved in this order:
1. The switch that is already master remains unchanged.
2. The switch (or stack) whose master has a higher user-configured priority.
3. The switch (or stack) that is not using the default configuration.
4. The switch (or stack) with the more recent license or image version.
5. The switch (or stack) with the higher hardware priority or hardware version.
6. The stack with the most members (if two stacks are being connected).
7. The switch with the lowest MAC addresses.

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

Please rate, if helpful

Thank you.

support.info1 · ‎09-08-2016

Hi,

Thank you for reply.

Here is what the command show switch displays :

Switch/Stack Mac Address : xxxx.xxxx.xxx1 - Local Mac Address
Mac persistency wait time: Indefinite
                                         H/W    Current
Switch# Role    Mac Address   Priority Version  State
------------------------------------------------------------
*1      Active  xxxx.xxxx.xxx1    1       V01   Ready
 2      Standby xxxx.xxxx.xxx2    2        0    Ready

Switch are same model 3650 (baught at the same time at the same reseller), but curiously H/W version is not the same...

Austin Sabio · ‎09-09-2016

You should be good as both are in ready state. Please post show version.

support.info1 · ‎09-29-2016

Here is th result of show version command :

Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.00E RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 26-Jun-14 20:18 by prod_rel_team

Cisco IOS-XE software, Copyright (c) 2005-2014 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.

ROM: IOS-XE ROMMON
BOOTLDR: CAT3K_CAA Boot Loader (CAT3K_CAA-HBOOT-M) Version 1.2, RELEASE SOFTWARE (P)

3650-COEUR-1 uptime is 7 weeks, 1 hour, 24 minutes
Uptime for this control processor is 7 weeks, 1 hour, 28 minutes
System returned to ROM by reload
System image file is "flash:packages.conf"
Last reload reason: reload

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

License Level: Ipbase
License Type: Permanent
Next reload license Level: Ipbase

cisco WS-C3650-24TS (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FDO1842E0RZ
2 Virtual Ethernet interfaces
56 Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
257008K bytes of Crash Files at crashinfo:.
257008K bytes of Crash Files at crashinfo-2:.
1550272K bytes of Flash at flash:.
1550272K bytes of Flash at flash-2:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of Dummy USB Flash at usbflash0-2:.
0K bytes of at webui:.

Base Ethernet MAC Address : xx:1d:fc:xx:c3:xx
Motherboard Assembly Number : 73-15127-05
Motherboard Serial Number : xxxxxxx
Model Revision Number : D0
Motherboard Revision Number : A0
Model Number : WS-C3650-24TS
System Serial Number : xxxxxxx

Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 28 WS-C3650-24TS 03.06.00E cat3k_caa-universalk9 INSTALL
2 28 WS-C3650-24TS 03.06.00E cat3k_caa-universalk9 INSTALL

Switch 02
---------
Switch uptime : 7 weeks, 1 hour, 21 minutes
Base Ethernet MAC Address : a0:xx:f9:xx:xx:80
Motherboard Assembly Number : 73-15127-05
Motherboard Serial Number : xxxxxxxx
Model Revision Number : D0
Motherboard Revision Number : A0
Model Number : WS-C3650-24TS
System Serial Number : xxxxxxxx

Configuration register is 0x102