Creating an ICX 7750 Stacking Link in a Production Environment

The stack-trunk command cannot be used to form a trunk manually in a live environment. Instead, use the multi-stack-trunk command. The multi-stack-trunk command configures both ends of a trunk, based on the range of ports you specify for each side.

Note: Configure the same size trunk on either side.

To configure stacking ports in a live system, use the multi-stack-port command.

In the following example, a port connection is converted to a two-port trunk connection between stack unit 4 and stack unit 5.

Please verify stack-port modifications. 

ICX7750-48F Router# configure terminal
ICX7750-48F Router(config)# stack unit 4
ICX7750-48F Router(config-unit-4)# multi-stack-trunk 4/2/1 to 4/2/2 and 5/2/4  to 5/2/5

stack unit 4
  module 1 icx7750-48-xgf-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  stack-trunk 4/2/1 to 4/2/2
  stack-port 4/2/4
stack unit 5                                                      
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  stack-port 5/2/1
  stack-trunk 5/2/4 to 5/2/5

The following example creates a stacking link between ports 1/2/1 and 2/2/1 in a live system. 

ICX7750-48F Router# configure terminal
ICX7750-48F Router(config)# stack unit 2
ICX7750-48F Router(config-unit-2)# multi-stack-port 2/2/1 and 1/2/1
ICX7750-48F Router(config-unit-2)#T=21m22.6: Election, was active, no change, ID=1, pri=128, 3U(1-3), A=u1, nbr#=1 1,
show run
Current configuration:
!
ver 08.0.90devT203
!
stack unit 1
  module 1 icx7750-48-xgf-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  priority 128
  stack-port 1/2/1
  stack-trunk 1/2/4 to 1/2/6
stack unit 2
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  stack-port 2/2/1

stack unit 3
  module 1 icx7750-20-qxg-port-management-module
  module 2 icx7750-qsfp-6port-qsfp-240g-module
  module 3 icx7750-6q-6port-qsfp-240g-module
  stack-trunk 3/2/4 to 3/2/6

stack enable
stack mac 609c.9f7f.9400

ICX7750-48F Router(config-unit-2)# show stack
T=21m31.4: alone: standalone, D: dynamic cfg, S: static
ID   Type          Role    Mac Address    Pri State   Comment
1  S ICX7750-48XGF active  609c.9f7f.9400 128 local   Ready
2  S ICX7750-20QXG standby cc4e.2438.7280   0 remote  Ready
3  S ICX7750-20QXG member  748e.f8f9.6300   0 remote  Ready

   standby      active
     +---+        +---+        +---+
     | 2 |2/1--2/1| 1 |2/4==2/4| 3 |
     +---+        +---+        +---+
Parent topic: ICX 7750 Stack Configuration Overview