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Catalyst 6500 Series Switch Command Reference—Release7.6
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Chapter2 Catalyst 6500 Series Switch and ROM Monitor Commands show spantree conflicts
show spantree conflicts
To display the MAC address of the root switch in the instance, the time remaining before the VLAN joins
the instance, and the number of seconds left before the entry expires and is removed from the table, use the
show spantree conflicts command.
show spantree conflicts vlan
Syntax Description
Defaults This command has no default settings.
Command Types Switch command.
Command Modes Normal.
Usage Guidelines This command is available in MISTP or MISTP/PVST+ mode only.
This command is not available in MST mode.
When only one entry is printed (or when all the entries are associated to the same instance), the VLAN
is mapped to that instance. If two or more entries are associated with different instance s, then the VLAN
has a conflict, is blocked, and is not mapped to any instance.
The time left timers associated with the mapping of a VLAN to an MISTP instance are started with the
maximum age of the BPDU and can be up to the maximum age. This field can sho w “inactiv e” to indicate
the MAC address is the same as the MAC address of the switch (for example, the switch is the root). In
all the other cases, the entry is a number, and the timer restarts every time an incoming BPDU confirms
the mapping.
The delay timer field can display the following:
•Number in seconds that represents the timer running; this timer can be up to the maximum forward
delay. The timer is initialized with the fwd delay.
•If the timer is not running, “inactive” is displayed because t h e VL AN is al re ady ma pped t o the
instance or a conflict is in progress.
Examples This example shows the output if there are no conflicts on the specified VLAN:
Console> (enable) show spantree conflicts 1
No conflicts for vlan 1
Inst MAC Delay Time left
---- ----------------- --------- ---------
1 00-30-a3-4a-0c-00 inactive 35
Console> (enable)
vlan Number of the VLAN.