Extreme Stacking Backup Node Reboot

[Vladimir_Monoma]

Colleagues, good afternoon . Prompt
please, there is such problem - if one of switches in a stack (master) is overloaded that the second node backup is overloaded after it through
10-15 seconds. And this in my opinion is some nonsense. Have you encountered such behavior of the stack and can it be defeated?



On the X670G2-48x and G670G2-72x stack, the license level on both switches is the same, both have master capability enabled.

Slot-2 Stack.12 # show stacking detail
Stacking Node 00:04:96:a0:7f:9d information:
Current:
Stacking : Enabled
Role : Master
Priority : 100
Slot number : 2
Stack state : Active
Master capable? : Yes
Stacking protocol : Enhanced
License level restriction :
In active topology? : Yes
Factory MAC address : 00:04:96:a0:7f:9d
Stack MAC address : 02:04:96:98:79:f9
Alternate IP address :
Alternate gateway :
Stack Port 1:
State : Operational
Blocked? : Yes
Control path active? : Yes
Selection : Alternate (47)
Stack Port 2:
State : Operational
Blocked? : No
Control path active? : Yes
Selection : Alternate (48)
Configured:
Stacking : Enabled
Master capable? : Yes
Slot number : 2
Stack MAC address : 02:04:96:98:79:f9
Stacking protocol : Enhanced
License level restriction :
Stack Port 1:
Selection : Alternate (47)
Stack Port 2:
Selection : Alternate (48)



Stacking Node 00:04:96:98:79:f9 information:
Current:
Stacking : Enabled
Role : Backup
Priority : 50
Slot number : 1
Stack state : Active
Master capable? : Yes
Stacking protocol : Enhanced
License level restriction :
In active topology? : Yes
Factory MAC address : 00:04:96:98:79:f9
Stack MAC address : 02:04:96:98:79:f9
Alternate IP address :
Alternate gateway :
Stack Port 1:
State : Operational
Blocked? : Yes
Control path active? : Yes
Selection : Alternate (71)
Stack Port 2:
State : Operational
Blocked? : No
Control path active? : Yes
Selection : Alternate (72)
Configured:
Stacking : Enabled
Master capable? : Yes
Slot number : 1
Stack MAC address : 02:04:96:98:79:f9
Stacking protocol : Enhanced
License level restriction :
Stack Port 1:
Selection : Alternate (71)
Stack Port 2:
Selection : Alternate (72)



Slot-2 Stack.15 # show stacking configuration
Stack MAC in use: 02:04:96:98:79:f9
Node Slot Alternate Alternate
MAC Address Cfg Cur Prio Mgmt IP / Mask Gateway Flags Lic
------------------ --- --- ---- ------------------ --------------- --------- ---
*00:04:96:a0:7f:9d 2 2 100 CcEeMm-Nn --
00:04:96:98:79:f9 1 1 50 CcEeMm-Nn --
* - Indicates this node
Flags: (C) master-Capable in use, (c) master-capable is configured,
(E) Stacking is currently Enabled, (e) Stacking is configured Enabled,
(M) Stack MAC in use, (m) Stack MACs configured and in use are the same,
(i) Stack MACs configured and in use are not the same or unknown,
(N) Enhanced protocol is in use, (n) Enhanced protocol is configured,
(-) Not in use or not configured
License level restrictions: (C) Core, (A) Advanced edge, or (E) Edge in use,
(c) Core, (a) Advanced edge, or (e) Edge configured,
(-) Not in use or not configured

[Vladimir_Monoma]

Slot-2 Stack.3 # show switch

SysName: Stack
SysLocation:
SysContact: support@extremenetworks.com, +1 888 257 3000
System MAC: 02:04:96:98:79:F9
System Type: X670G2-48x-4q (Stack)

SysHealth check: Enabled (Normal)
Recovery Mode: All
System Watchdog: Enabled

Current Time: Wed Jul 25 23:24:37 2018
Timezone: [Auto DST Disabled] GMT Offset: 0 minutes, name is UTC.
Boot Time: Wed Jul 25 23:15:49 2018
Boot Count: 42
Next Reboot: None scheduled
System UpTime: 8 minutes 47 seconds

Slot: Slot-2 * Slot-1
------------------------ ------------------------
Current State: MASTER BACKUP (In Sync)

Image Selected: secondary secondary
Image Booted: secondary secondary
Primary ver: 21.1.3.7 15.6.0.15
Secondary ver: 16.2.4.5 16.2.4.5
patch1-8 patch1-8

Config Selected: primary.cfg
Config Booted: primary.cfg

primary.cfg Created by ExtremeXOS version 16.2.4.5
721253 bytes saved on Wed Jul 25 23:14:56 2018

>> As I understand Master node was changed from 00:04:96:98:79:f9 to 00:04:96:a0:7f:9d?

Yes

[Vladimir_Monoma]

Hi Robert,

1. I do not think that the problem is stacking different switches

2. It means that I disconnect the power supply from the switch which in this topology is a master

[Robert_Cummins]

I am sorry but I am not understanding what the problem is you are trying to solve. Are you trying to force the backup master to take over by powering off the master slot?

[Alexandr_P]

Hello!

1. What EXOS version?
2. Is there some messages appear in logs?
3. What sys-recovery level configured?
4. Is both nodes powered by same UPS? Is backup node rebooting when power off manually Master node?
5. As I understand Master node was changed from 00:04:96:98:79:f9 to 00:04:96:a0:7f:9d?

Thank you!

[renevanegdom]

I think the firmware on both switch are not equal. Use the command show switch and show version image to check this.