spanning-tree 802-1w
spanning-tree 802-1w
[single
]
[
force-version
number]
[
forward-delay
seconds
]
[
hello-time
seconds
]
[
max-age
seconds
]
[
priority
number
]
no spanning-tree 802-1w
[
single
]
[
force-version
number
]
[
forward-delay
seconds
]
[
hello-time
seconds
]
[
max-age
seconds
]
[
priority
number
]
Interface configuration mode
spanning-tree 802-1w
{
admin-edge-port
|
admin-pt2pt-mac}
no spanning-tree 802-1w
{
admin-edge-port
|
admin-pt2pt-mac}
The 802.1w port parameters are preconfigured with default values.
- force-version number
- Forces the bridge to send BPDUs in a specific format. 0 for STP compatibility mode and 2 for RSTP default mode.
- forward-delay seconds
- Configures the time period a port waits before it forwards an RST BPDU after a topology change. This value ranges from 4 through 30 seconds. The default is 15 seconds.
- hello-time seconds
- Configures the time interval between two Hello packets. This value ranges from 1 through 10 seconds. The default is 2 seconds.
- max-age seconds
- Configures the time period the device waits to receive a Hello packet before it initiates a topology change. The time period ranges from 6 through 40 seconds. The default is 20 seconds.
- priority number
- Configures the priority of the bridge. The value ranges from 0 through 65535. A lower numerical value means the bridge has a higher priority. Thus, the highest priority is 0. The default is 32768.
Global configuration mode
VLAN configuration mode
Interface configuration mode
The value of max-age must be greater than the value of forward-delay to ensure that the downstream bridges do not age out faster than the upstream bridges (those bridges that are closer to the root bridge).
Configuring the STP 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 sets the parameters to the default values.
This command has same function as spanning-tree rstp. From 08.0.92 release onwards, spanning-tree rstp is deprecated.