two 9300 stacking issue

[NokLi90697432]

Hi all,

I have two 9300 with stacking, And I try to testing the fail-over. Then unplug power cable at active switch and expect standby switch will become to active. But the result is standby switch go to reboot at the same time.

What could be causing for stack switchover fail? Did I missing some configuration? Thanks

Redundant System Information :
------------------------------
Available system uptime = 3 hours, 40 minutes
Switchovers system experienced = 2
Standby failures = 0
Last switchover reason = active unit removed

Hardware Mode = Duplex
Configured Redundancy Mode = sso
Operating Redundancy Mode = sso
Maintenance Mode = Disabled
Communications = Up

Current Processor Information :
-------------------------------
Active Location = slot 1
Current Software state = ACTIVE
Uptime in current state = 3 hours, 11 minutes
Image Version = Cisco IOS Software [Fuji], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre
BOOT = flash:packages.conf
CONFIG_FILE =
Configuration register = 0x102

Peer Processor Information :
----------------------------
Standby Location = slot 2
Current Software state = STANDBY HOT
Uptime in current state = 3 hours, 6 minutes
Image Version = Cisco IOS Software [Fuji], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre
BOOT = flash:packages.conf
CONFIG_FILE =
Configuration register = 0x102

[Leo Laohoo]

What is the the output to the command "sh switch detail"?

[NokLi90697432]

Hi Leo,

here the output

show switch detail
Switch/Stack Mac Address : 10b3.d611.d680 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active 10b3.d611.d680 10 V02 Ready
2 Standby 308b.b23e.c900 1 V02 Ready

Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 OK OK 2 2
2 OK OK 1 1

[Reza Sharifi]

Hi,

All outputs show that the stacking has been configured correctly. Is it possible that you have power stacking configured and the primary switch is powering the standby? Are these switches connected to PDU or wall outlets?

What happens if you just reboot the standby? Does that reboot the active too?

HTH

[NokLi90697432]

hi Reza Sharifi

Yes, there are stack power cable, but I already unplug stack power cable before failover. It is related to stack power configuration causing fail? And how to check stack power configuration?

[balaji.bandi]

I believe you need to connect - Cross.

Switch 1 Port 1 stack cable to Switch2 Port 2

Switch 2 Port  2 Stack Cable to Switch 1 Port 1

Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 OK OK 2 2
2 OK OK 1 1

[paul driver]

Hello

---

@NokLi90697432 wrote:

Yes, there are stack power cable, but I already unplug stack power cable before failover. It is related to stack power configuration causing fail? And how to check stack power configuration?

---

Yes it can,it would depend on the power consumption of the stack, what power role that switch played the stack and the and the power mode you have appended to the stack, however in a two switch power stack with all things equal i guess a reload this shoudnt really happen to the second switch.

sh env all
sh stack-power