Merging Stacks - Alcatel OmniSwitch 6800 Series Hardware User's Manual

Managing OmniSwitch 6800 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
5
Power on all incoming modules.
Note. No more than eight switches can operate in a single stacked configuration at any time. In addition, a
single stack provides 32 tokens for all hardware operating within the stack. If a module is inserted into an
existing stack and not enough tokens are available, an error will result. Refer to
on page 3-24 for more information.
OmniSwitch 6800 Series Hardware Users Guide July 2005
Hot-Swapping Modules In a Stack
page 3-15.
"Understanding Tokens"
page 3-23