Catalyst 9200l stack issue

[GianLucaCeffa80907]

Hi,

i'm working with for the first time, I connected two C9200L-48T-4G in stack, they worked fine, the state before the issue was the following

show switch stack-ports summary
Sw#/Port# Port Status Neighbor Cable Length Link OK Link Active Sync OK #Changes to LinkOK In Loopback
-------------------------------------------------------------------------------------------------------------------
1/1 OK 2 50cm Yes Yes Yes 1 No
1/2 OK 2 50cm Yes Yes Yes 1 No
2/1 OK 1 50cm Yes Yes Yes 1 No
2/2 OK 1 50cm Yes Yes Yes 1 No

Suddenly the hosts connected to the second switch of the stack stopped to work, and I see the stack port down:

mi-cpe-l2-enelg-2#show switch stack-ports summary
Sw#/Port# Port Status Neighbor Cable Length Link OK Link Active Sync OK #Changes to LinkOK In Loopback
-------------------------------------------------------------------------------------------------------------------
1/1 DOWN NONE 50cm Yes No Yes 0 No
1/2 DOWN NONE 50cm Yes No Yes 0 No

show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 None None

show switch detail
Switch/Stack Mac Address : 6c8b.d3a3.a800 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active 6c8b.d3a3.a800 1 V01 Ready
2 Member 0000.0000.0000 0 Provisioned

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

Could be an hardware issue on stack cable or module?

What's the corret replacement procedure, how can I add the second swith in stack member again?

Thanks

Gian Luca

[balaji.bandi]

This looks like Bug in the code, can you post show version.

resolution for short term to reboot entire stack. make you you setup and switch provision, switch number and switch priority, so they maintain consistence.

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9300-series-switches/white-paper-c11-741468.html

[GianLucaCeffa80907]

Hi Balaji,

I've just restarted the entire stack first, then only the second switch, unplug/plug again the stack cable.

Following the sho ver

Cisco IOS XE Software, Version 16.09.02
Cisco IOS Software [Fuji], Catalyst L3 Switch Software (CAT9K_LITE_IOSXE), Version 16.9.2, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2018 by Cisco Systems, Inc.
Compiled Mon 05-Nov-18 18:14 by mcpre

Cisco IOS-XE software, Copyright (c) 2005-2018 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. 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: System Bootstrap, Version 16.10.1r [FC3], RELEASE SOFTWARE (P)

mi-cpe-l2-enelg-2 uptime is 1 day, 3 hours, 0 minutes
Uptime for this control processor is 1 day, 3 hours, 5 minutes
System returned to ROM by Reload Command at 12:30:19 MET Sun May 23 2021
System restarted at 12:38:05 MET Sun May 23 2021
System image file is "flash:cat9k_lite_iosxe.16.09.02.SPA.bin"
Last reload reason: Reload Command

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cisco C9200L-48T-4G (ARM64) processor with 519552K/3071K bytes of memory.
Processor board ID JAE23080J41
21 Virtual Ethernet interfaces
104 Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
1999164K bytes of physical memory.
819200K bytes of Crash Files at crashinfo:.
1941504K bytes of Flash at flash:.
0K bytes of WebUI ODM Files at webui:.

Base Ethernet MAC Address : 6c:8b:d3:a3:a8:00
Motherboard Assembly Number : 73-18698-05
Motherboard Serial Number : JAE23080J41
Model Revision Number : D0
Motherboard Revision Number : A0
Model Number : C9200L-48T-4G
System Serial Number : JAE23080J41

Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 52 C9200L-48T-4G 16.9.2 CAT9K_LITE_IOSXE BUNDLE

Configuration register is 0x102

If I undestand well, the process should be:

- set the highest switch priority to swith 1

- connect new stack cable prior to powering it on switch 2

- power on switch 2

- check stack discovered operation

- reboot entire stack with reload command by cli

Could be fine?

Thanks

Gian Luca

[balaji.bandi]

I have seen some bug around 16.09.X - suggest to upgrade to 16.12.X for better stable.

- set the highest switch priority to swith 1
- connect new stack cable prior to powering it on switch 2
- power on switch 2
- check stack discovered operation
- reboot entire stack with reload command by cli

should work after changing the number and priority - write the config.

[Leo Laohoo]

The stack is running an early version of 16.9.X.  I would recommend upgrading the firmware because I suspect the stack is about to "split".

[GianLucaCeffa80907]

Hi,

what's the right process to upgrade a IOS XE release? 

I found this:

https://www.ciscozine.com/catalyst-9000-upgrade/

Could be fine?

Thanks

[Leo Laohoo]

The instructions on how to do the upgrade, in Install Mode, are found in the Release Notes.

[GianLucaCeffa80907]

All switchs in the stack  must have the same release sw?

[Leo Laohoo]

---

@GianLucaCeffa80907 wrote:

All switchs in the stack  must have the same release sw?

---

• All switches in the same stack must be running in the same exact IOS-XE version. 
• All switches in the same stack must have their IOS in either Install Mode or Bundle Mode (and not both).

[GianLucaCeffa80907]

Hi Leo,

a last question: if I have a switch in in install mode and anotehre in bundle mode, howe can I switch from install to bundle?

Thanks

[balaji.bandi · Accepted solution]

You can convert bundle to install mode and join to the stack :

below proceedure still works for Cat 9K

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/system_management/configuration_guide/b_sm_3se_3850_cg/b_sm_3se_3850_cg_chapter_010100.html