Manually Creating a Two-unit ICX 7850 Stack with a Ring Topology

Perform the following steps to manually create a two-unit ICX 7850 stack with a ring topology.
  1. (Optional) Enter the show running-config command on each stack unit to check its current configuration.
    The following example shows two stacking units each with stacking ports configured. 
    Unit 1:
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
  stack-port 1/3/1
  stack-port 1/3/5
!
!
aaa authentication web-server default local                       
aaa authentication login default local
enable aaa console
!
no telnet server
username super password .....
!
!
sz registrar
!
!
End

Unit 2:
ICX7850-48FS Router# show running-config
Current configuration:
!
ver 08.0.90_b313T233
!
stack unit 1
  module 1 icx7850-48fs-port-management-module
  module 2 icx7800-100g-8port-800g-module
  stack-port 1/2/1
  stack-port 1/2/5
!
!
aaa authentication web-server default local
aaa authentication login default local                            
enable aaa console
!
no telnet server
username super password .....
!
!
sz registrar
!
!
End
  2. Manually configure the desired stack-ports or stack-trunks on the two candidate stack units. To configure a ring, configure two potential connections on each unit.
    The following example creates two four-port stacking trunks on each stacking candidate. 
    Unit 1:
ICX7850-32Q Router# configure terminal
ICX7850-32Q Router(config)# stack unit 1
ICX7850-32Q Router(config-unit-1)# stack-trunk 1/3/1 to 1/3/4
stack-trunk 1/3/1 to 1/3/4 replaces stack-port 1/3/1
ICX7850-32Q Router(config-unit-1)# stack unit 1
ICX7850-32Q Router(config-unit-1)# stack-trunk 1/3/5 to 1/3/8
stack-trunk 1/3/5 to 1/3/8 replaces stack-port 1/3/5

Unit 2:
ICX7850-48FS Router# configure terminal
ICX7850-48FS Router(config)# stack unit 1
ICX7850-48FS Router(config-unit-1)# stack-trunk 1/2/1 to 1/2/4
stack-trunk 1/2/1 to 1/2/4 replaces stack-port 1/2/1
ICX7850-48FS Router(config-unit-1)# stack-trunk 1/2/5 to 1/2/8
stack-trunk 1/2/5 to 1/2/8 replaces stack-port 1/2/5
ICX7850-48FS Router(config-unit-1)# end
  3. Enter the stack enable command on both the units to enable stacking. 
    Unit 1:
ICX7850-32Q Router# configure terminal
ICX7850-32Q Router(config)# stack enable
Enable stacking. This unit actively participates in stacking

Unit 2:
ICX7850-48FS Router# configure terminal
ICX7850-48FS Router(config)# stack enable
Enable stacking. This unit actively participates in stacking
    Stack active controller election occurs on the connected units, and the second unit reloads to join to the stacking system. 
    T=22m0.6: Election, was alone --> member, ID=2, pri=0, 2U(1-2), A=u1, nbr#=1 1, reason: u1: stk-po-chg, , 
My assigned ID is 2, but my bootup ID is 1, need reload

 [MEMBER]local-1@ICX7850-48FS Router>T=22m3.6: Boot request from u1 mac=d4c1.9e18.3731, my ID=2, reason: u2 bootup-id=1, flash: Primary, jumbo=0, 
Copy RAMFS console log file to flash before we shutdown
Copy RAMFS fitrace error log file to flash before we shutdown
PCI-FPGA EP found, disabling FPGA interrupts
=============Goes for reload
    The active controller is assigned unit ID 1. It reloads and synchronizes configuration with unit 2. Unit 2 is assigned the role of standby controller. 
    
ICX7850-32Q Router(config)#T=22m3.6: Election, was alone --> active, ID=1, pri=0, 2U(1-2), A=u1, nbr#=1 1, reason: u2: stk-po-chg, , 
T=22m6.0: Election, was active, no change, ID=1, pri=0, 2U(1-2), A=u1, nbr#=1 1, reason: u1: stk-po-chg, , 
T=22m9.1: reset unit 2: u2 bootup-id=1
Debug: Dec 13 23:21:27 
Config changed due to add/del units. Do write mem if you want to keep it
Debug: Dec 13 23:21:30 T=22m14.1: Unit 1 loses all neighbors.
T=22m14.2: Active U1 deletes U2 and its config because it is learned.
T=27m21.6: Election, was active, no change, ID=1, pri=0, 2U(1-2), A=u1, nbr#=1 1, reason: u1: port-up, , 
Debug: Dec 13 23:26:38 Detect stack unit 2 has different ssh rsahost key, will synchronize it
Debug: Dec 13 23:26:38 T=27m22.0: Synchronize webauth files to u2
T:27m23.6: Done hot swap: active controller u1 sets u2 to Ready.
T=27m24.1: Election, was active, no change, ID=1, pri=0, 2U(1-2), A=u1, nbr#=1 1, 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 23:26:45 
Config changed due to add/del units. Do write mem if you want to keep it
Debug: Dec 13 23:26:48 T=27m32.0: Synchronize ssh rsa host key to u2
T=28m24.7: Assigned unit 2 to be standby
Debug: Dec 13 23:27:43 T=28m26.7: start running config sync to standby u2
Debug: Dec 13 23:27:43 T=28m27.5: Running config sync to standby u2 is complete

After running configuration sync to standby is complete, please save the configuration.
  4. Enter the write memory command to save the configuration after the two units have synchronized and the standby controller assignment is complete. 
    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.
  5. (Optional) Enter the show stack command and the show running-config command to verify stack formation. 
    ICX7850-32Q Router# show stack
T=31m6.8: alone: standalone, D: dynamic cfg, S: static
ID   Type          Role    Mac Address    Pri State   Comment                   
1  S ICX7850-32Q   active  d4c1.9e18.3731   0 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 - protocols ready, can failover or manually switch over
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 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
  stack-trunk 1/3/1 to 1/3/4
  stack-trunk 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 2/2/1 to 2/2/4
  stack-trunk 2/2/5 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
ICX7850-32Q Router#
Parent topic: ICX 7850 Stack Configuration Overview