Alcatel OS6855-24 User Guide - Page 174

Merging Stacks, Connect the stacking cables for all incoming modules to the existing

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Hot-Swapping Modules In a Stack Managing OmniSwitch 6855 Series Stacks Merging Stacks Merging stacks involves connecting two or more operational stacks and attempting to reboot them as a single virtual chassis. In most cases, errors will result. To merge stacks without causing errors, select one stack that is to remain up and running and then add modules from the other stack(s) by following the steps below: 1 Make sure all switches are running the same software version. 2 Clear the saved slot information from all incoming modules. This will ensure that they are each assigned unique slot numbers when they join the stack. 3 After clearing the saved slot information, power off all incoming modules. 4 Connect the stacking cables for all incoming modules to the existing, operational stack as required. Be sure to provide stacking cable redundancy. For information on stack cabling, refer to page 7-17. 5 Power on all incoming modules. Note. No more than four switches can operate in a single stacked configuration at any time. page 7-26 OmniSwitch 6855 Series Hardware Users Guide September 2011

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Hot-Swapping Modules In a Stack
Managing OmniSwitch 6855 Series Stacks
page 7-26
OmniSwitch 6855 Series Hardware Users Guide
September 2011
Merging Stacks
Merging stacks involves connecting two or more operational stacks and attempting to reboot them as a
single virtual chassis. In most cases, errors will result. To merge stacks without causing errors, select one
stack that is to remain up and running and then add modules from the other stack(s) by following the steps
below:
1
Make sure all switches are running the same software version.
2
Clear the saved slot information from all incoming modules. This will ensure that they are each
assigned unique slot numbers when they join the stack.
3
After clearing the saved slot information, power off all incoming modules.
4
Connect the stacking cables for all incoming modules to the existing, operational stack as required. Be
sure to provide stacking cable redundancy. For information on stack cabling, refer to
page 7-17
.
5
Power on all incoming modules.
Note.
No more than four switches can operate in a single stacked configuration at any time.