Creating a Two-unit ICX 7850 Stack with a Linear-topology Trunk Using Stack Interactive-setup

Complete the following steps to use stack interactive-setup to create a two-unit ICX 7850 stack with a linear-topology trunk.
  1. In global configuration mode on the unit that will server 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
ICX7850-32Q Router(config)# end
  2. On the active controller, enter the stack interactive-setup command. When prompted to select an option, select 2 if the new unit is a clean unit to discover and convert new units to stack members. To keep the proposed configuration, enter y when prompted.
    Note: If you attempt to run stack interactive-setup immediately after enabling stacking, the following message may be displayed: T=3m37.8: Some ports are in HighGig mode. Please try again in 30 seconds.
    In the following example, all eight ports (1/3/1 to 1/3/8) are connected to the peer unit. 
    ICX7850-32Q Router# stack interactive-setup
You can abort stack interactive-setup at any stage by <ctrl-c>
0: quit
1: change stack unit IDs
2: discover and convert new units (no startup-config flash) to members
3: discover and convert existing/new standalone units to members
2&3 can also find new links and auto-trunk or convert chain(s) to ring.
Please type your selection: 2
Probing topology to find clean units...
T=5m14.1: Sending probes to ports: u1: 1/3/1 to 1/3/8, 
Existing stack: ============================================================
                                                                               
     +---+                                                                     
  3/1| 1 |3/5                                                                  
     +---+                                                                     



Horizontal bars link to discovered units. Vertical bars link to stack units.


Chain #0: ==================================================================
#1: icx7850-48fs-port-management d4c1.9e18.8dd9

     1/3/1                                                                     
      ||                                                                       
      ||                                                                       
      2/1                                                                      
     +---+                                                                     
     |#1 |                                                                     
     +---+                                                                     
                                                                                
Discovered 1 chain/ring
Chain #0: Do you want to select this chain? (enter 'y' or 'n'): y
  3. Press Enter to accept the default ID, or type an alternative ID.
    In the following example, the user elected to use the default ID. 
    1: icx7850-48fs-port d4c1.9e18.8dd9, type an ID (No: 0, default: 2): 

You selected 1 unit(s): #1: ID=2,  
Links U1--U2, #=8: 3/1--2/1, 3/2--2/2, 3/3--2/3, 3/4--2/4, 3/5--2/5, 3/6--2/6, 3/7--2/7, 3/8--2/8,
  4. If the topology qualifies as a linear-topology trunk, you are given the option of selecting the linear-topology chain (enter n) or a ring topology (enter y).
    In the following example, a linear-topology trunk is selected. 
    There are total two units. The connections qualify a linear-topo that puts all discovered links to a trunk.
Do you want a ring? (y: ring, n: linear-topo chain) (enter 'y' or 'n'): n

                   #1                                                          
     +---+        +---+                                                        
     | 1 |3/1==2/1| 2 |                                                        
     +---+        +---+
  5. When prompted to accept the topology, enter y (or type n to terminate the process). 
    Proceeding will produce the above topology. Do you accept it? (enter 'y' or 'n'): y
stack interactive-setup discovers 1 unit(s) and sends stack-port/trunk to chain 0: linear-topo: 2/1 to 2/8

stack-trunk 1/3/1 to 1/3/8 replaces stack-port 1/3/1 and stack-port 1/3/5
    After you accept the topology, the second stack unit reloads, and stack formation is completed. You are prompted to enter the write memory command. 
    Configuration changed. Please do "write memory".


ICX7850-32Q Router#T=11m12.7: Election, was alone --> active, ID=1, pri=128, 2U(1-2), A=u1, nbr#=1 0, reason: u2: port-up, , 
Debug: Dec 13 22:12:21 Detect stack unit 2 has different ssh rsahost key, will synchronize it
Debug: Dec 13 22:12:21 T=11m13.2: Synchronize webauth files to u2
T:11m14.7: Done hot swap: active controller u1 sets u2 to Ready.
T=11m15.2: Election, was active, no change, ID=1, pri=128, 2U(1-2), A=u1, nbr#=1 0, reason: u1: stk-po-chg, , 
Stack unit 2 Power supply 1 is up
Stack unit 2 Power supply 2 is not present
Debug: Dec 13 22:12:28 
Config changed due to add/del units. Do write mem if you want to keep it
Debug: Dec 13 22:12:31 T=11m23.2: Synchronize ssh rsa host key to u2
T=12m15.9: Assigned unit 2 to be standby
Debug: Dec 13 22:13:26 T=12m17.9: start running config sync to standby u2
Debug: Dec 13 22:13:26 T=12m18.6: Running config sync to standby u2 is complete
  6. Enter the write memory command to save the configuration. 
    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.
  7. (Optional) Enter the show stack command and the show running-config command to check the stack configuration. 
    
ICX7850-32Q Router# show stack
T=12m52.2: 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

    standby      active                                                        
     +---+        +---+                                                        
     | 2 |2/1==3/1| 1 |                                                        
     +---+        +---+                                                        
Standby u2 - Learn other units for 31 sec, protocols may not be ready in 39 s.
Role history: N: standalone, A: active, S: standby, M: member
U1: N->A

ICX7850-32Q Router# show running-config
Current configuration:
!
ver 08.0.90_b313T233
!
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 1/3/1 to 1/3/8
  
stack unit 2
  module 1 icx7850-48fs-port-management-module
  module 2 icx7800-100g-8port-800g-module
  stack-trunk 2/2/1 to 2/2/8
  
stack enable
stack mac d4c1.9e18.3731
!
!
aaa authentication web-server default local
aaa authentication login default local
enable aaa console
!
no telnet server
username super password .....
!
!
hitless-failover enable
!
!
sz registrar
!
!
end
Parent topic: ICX 7850 Stack Configuration Overview