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You would want to use Rapid Per VLAN STP and the core switch as your root bridge:
In 6509:
% Enable Per VLAN STP %spanning-tree mode rapid-pvst
% Make sure a different Bridge ID is used for each VLAN %spanning-tree extend system-id
% Force the core s...
5 is the severity level which means everything between 0 and 5 is logged.
The facility value is used to calculate the priority value of the message which is done by below formula:
Priority value = (facility value* 8) + severity value
These are the fa...