spanning-tree 802-1w ethernet
Enables the spanning-tree 802.1w port commands on Ethernet ports.
Syntax
spanning-tree 802-1w
[
single
]
ethernet
stackid/slot/port
[
admin-edge-port
]
[
admin-pt2pt-mac
]
[
force-migration-check
]
[
path-cost
number
]
[
priority
number
]
[
disable
]
no spanning-tree 802-1w
[
single
]
ethernet
stackid/slot/port
[
admin-edge-port
]
[
admin-pt2pt-mac
]
[
force-migration-check
]
[
path-cost
number
]
[
priority
number
]
[
disable
]
Command Default
The 802.1w port parameters are pre-configured with default values.
Parameters
- ethernet stackid/slot/port
- Specifies the Ethernet port on which you want to configure the 802.1w parameters.
- admin-pt2pt-mac
- Enables a port that is connected to another port through a point-to-point link. The point-to-point link increases the speed of convergence. This parameter, however, does not auto-detect whether or not the link is a physical point-to-point link.
- force-migration-check
- Forces the specified port to sent one RST BPDU. If only STP BPDUs are received in response to the send RST BPDU, then the port will return to sending STP BPDUs.
- path-cost number
- Configures the cost of the port path to the root bridge. 802.1w prefers the path with the lowest cost. The path cost ranges is from 1 through 20,000,000.
- priority number
- Sets the priority for the port. The priority value ranges from 0 through 240, in increments of 16. The default value is 128.
Modes
Global configuration mode
VLAN configuration mode
Usage Guidelines
Configuring the parameters is optional. All parameters have default values. Additionally, all values will be globally applied to all ports on the system or on the port-based VLAN for which they are defined.
The
no form of the command disables the spanning tree on a VLAN