Using Stack Zero-touch Provisioning to Create a Two-unit ICX 7850 Stack with a Ring Topology

Before using stack zero-touch provisioning, check all connections to make sure they are correct.

Complete the following steps to create a two-unit ICX 7850 ring using stack zero-touch provisioning.

(Optional) Enter the show running-config command to check unit configuration on the proposed active controller unit.

ICX7850-32Q Router# show running-config
Current configuration:
!
ver 09.0.00
!
stack unit 1
  module 1 icx7850-32q-port-management-module
  module 2 icx7800-100g-12port-1200g-module
  module 3 icx7800-100g-8port-800g-module
  stack-port ethernet 1/3/1
  stack-port ethernet 1/3/5
!
!

In global configuration mode on the unit that will serve as the active controller, enter the stack enable command to enable stacking.
```
ICX7850-32Q Router# configure terminal
ICX7850-32Q Router(config)# stack enable
Enable stacking. This unit actively participates in stacking
```

Enter the stack zero-touch-enable command.

ICX7850-32Q Router(config)# stack zero-touch-enable

(Optional) Enter the show stack zero-touch status command to check the available configuration options.
```
ICX7850-32Q Router# show stack zero-touch status
I cannot be discovered by stack zero-touch or interactive-setup option 2. reason: has stack enable
configuration
I can be discovered by stack interactive-setup option 3.
Has no unit-replacement timer. trig=2, reason=has stack zero-touch-enable
zero-touch-enable and stack enable are configured. Have done 0 probes
ZTP has converted 0 new units to members.
zero-touch-enable period: 3 minutes. Will trigger in 0 min 16 sec
ZTP postponed due to topology changes: 0
My MAC used in image copy is 748e.f8f9.636e.
ACL #=0, ind=0
```
The stack zero-touch provisioning process sends probes to ports 1/3/1 through 1/3/8 and discovers the ring topology.
The other unit reloads as a stack member, and stack formation is complete.

Note: The results of stack zero-touch provisioning are no longer output to the console. Instead, they are stored in log manager. To display the results of the process, enter the show log debug infra stack all command. You can also confirm stack formation with the show stack command after unit 2 reloads and joins the stack.

Enter the write memory command to save the configuration after Unit 2 reloads and joins the stack.

ICX7850-32Q Router# write memory

There is no startup config file, unable to save legacy config 
Flash Memory Write (8192 bytes per dot) 
Write startup-config done.

Automatic copy to member units:  2
Flash Memory Write (8192 bytes per dot) 
.
Copy Done.

(Optional) Enter the show stack command and the show running-config command to check the stack configuration.

ICX7850-32Q Router# show stack
T=14m59.3: alone: standalone, D: dynamic cfg, S: static
ID   Type          Role    Mac Address    Pri State   Comment                   
1  S ICX7850-32Q   active  d4c1.9e18.3731 128 local   Ready
2  S ICX7850-48FS  standby d4c1.9e18.8dd9   0 remote  Ready

    active       standby                                                       
     +---+        +---+                                                        
 =3/5| 1 |3/1==2/1| 2 |2/5=                                                    
 |   +---+        +---+   |                                                    
 |                        |                                                    
 |------------------------|                                                    
Standby u2 - Learn other units for 63 sec, protocols may not be ready in 7 s.
Role history: N: standalone, A: active, S: standby, M: member
U1: N->A

Current stack management MAC is d4c1.9e18.3731

ICX7850-32Q Router# show running-config
Current configuration:
!
ver 09.0.00
!
stack unit 1
  module 1 icx7850-32q-port-management-module
  module 2 icx7800-100g-12port-1200g-module
  module 3 icx7800-100g-8port-800g-module
  priority 128
  stack-trunk ethernet 1/3/1 to 1/3/4
  stack-trunk ethernet 1/3/5 to 1/3/8
stack unit 2
  module 1 icx7850-48fs-port-management-module
  module 2 icx7800-100g-8port-800g-module
  stack-trunk ethernet 2/2/1 to 2/2/4
  stack-trunk ethernet 2/2/5 to 2/2/8
stack enable
stack zero-touch-enable
stack mac d4c1.9e18.3731
!
!

Stacking by Device

Using Stack Zero-touch Provisioning to Create a Two-unit ICX 7850 Stack with a Ring Topology