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Stack Management
Configuring stacking trunks in a live environment
Displaying multi-trunk stacking configuration
The multi-stack-trunk command is used on live stacks and is effectively a combination of two stack-trunk commands to
ensure that a trunk-to-trunk connection is created on both ends of a stack link simultaneously. When the multi-stack trunk
command is used to create a trunk, the configuration is saved as stack trunk ports, and the running configuration displays the
stack trunk details on both ends under the heading stack unit <unit> configuration.
ICX7750-48C Router# configure terminal
ICX7750-48C Router(config)# stack unit 1
ICX7750-48C Router(config-unit-1)# multi-stack-trunk 1/2/4 to 1/2/6 and 2/2/4 to 2/2/6
In the previous example, a two-port trunk is created between stack units 1 and 2. This example enlarges the two-port trunk to a
three-port trunk.
Use the show running-config command to display the related configuration under stack-trunk and stack-port. For the multi-
stack trunk created in the previous example, the running or startup configuration displays the following configuration for the
show running-config command.
ICX7750-48C Router# show running-config
Current configuration:
!
ver 08.0.90
!
stack unit 1
module 1 icx7750-48-xgc-port-management-module
module 2 icx7750-qsfp-6port-qsfp-240g-module
stack-port 1/2/1
stack-trunk 1/2/4 to 1/2/6
stack unit 2
module 1 icx7750-48-xgc-port-management-module
module 2 icx7750-qsfp-6port-qsfp-240g-module
stack-port 2/2/1
stack-trunk 2/2/4 to 2/2/6
stack enable
!
!
Error messages encountered when configuring a stacking trunk
The following error messages may occur when you configure a trunk on a Ruckus ICX stack:
•
If you form a multi-trunk connection on two sets of stack ports that are not directly connected on neighboring units, the
multi-stack-trunk command is rejected, and an error message similar to the follow example is displayed.
Error! 1/2/3 has no connection. Please use "stack-trunk".
•
When a unit joins or leaves a stack, or a stack trunk is configured using the stack-trunk command, a stack election is
triggered. The multi-stack-trunk command triggers a stack election among the stack units and reprograms (or
removes) the stack trunk port in the hardware. A timer is set on all units to coordinate a stack election. Traffic is
generally interrupted for less than 5 seconds for the system to detect the port down event and reprogram hardware.
You must wait for the stack election to be completed before entering another command. If you do not wait for the stack
election to finish, the following warning message is displayed.
Stack port or trunk change is in progress, please try later.
208
Ruckus FastIron Stacking Configuration Guide, 08.0.90
Part Number: 53-1005572-01
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Troubleshooting
