Users Guide

After the new unit loads and the parent C9010 discovers it, the preconfigured software settings download from the C9010. The
new unit functions as part of the stack.
Renumbering a Stack Unit
By default, the number of a PE stack unit is 0. After you create and power on a PE stack, the units automatically number from 0
to 7, starting at 0. To change the default or automatically assigned stack unit number, use the pe renumber command.
NOTE: You can renumber a unit only when it is online and if no unit with the new stack-unit number is online.
• Configure a stack-unit number.
EXEC Privilege mode
pe pe-id stack-unit unit-id renumber unit-id
Where:
– pe pe-id is the PE ID number. The range is from 0 to 255.
– stack-unit unit-id is the stack-unit ID number. The range is from 0 to 7.
– renumber renumber is the new stack-unit ID.
Dell# pe 200 stack-unit 3 renumber 5
Renumbering the stack master triggers a stack reload, as shown in the following message. When the stack comes back online,
the master unit remains the management unit.
Renumbering management unit will reload the stack.
WARNING: Interface configuration for current unit will be lost!
Proceed[confirm yes/no]: yes
Prioritizing Stack Units
In a PE stack, by default, the stack unit with the highest MAC address is elected master; the stack unit with the second highest
MAC address is elected standby. To change the default master and standby assignment, you can assign stack-unit priorities. If
multiple units tie for the highest priority, the unit with the highest MAC address is elected master.
NOTE
: You can configure a stack-unit priority only when the unit is online.
1 Enter Port-Extender Configuration mode.
CONFIGURATION mode
pe pe-id
2 Configure a stack-unit priority.
PORT-EXTENDER CONFIGURATION mode
stack-unit unit-number priority priority
Where:
• unit-number — The stack-unit number. The range is from 0 to 7.
• priority — The unit with the numerically highest priority is elected the master management unit; the unit with the
second highest priority is the standby unit. The range is from 1 to 14. There is no default.
Dell(conf)#pe 2
Dell(conf-pe-2)#stack-unit 0 priority 14
Dell(conf-pe-2)#stack-unit 1 priority 13
Port Extender (PE) Stacking 710