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Spanning-Tree Commands
78-20269-01 Command Line Interface Reference Guide
370
29
Command Mode
Interface Configuration (Ethernet, port-channel) mode
User Guidelines
The priority value must be a multiple of 16.
Example
The following example configures the spanning priority on
gi
15 to 96
Console(config)# interface gi15
Console(config-if)# spanning-tree port-priority 96
29.10 spanning-tree portfast
Use the spanning-tree portfast Interface Configuration (Ethernet, port-channel)
mode command to enable the PortFast mode. In PortFast mode, the interface is
immediately put into the forwarding state upon linkup, without waiting for the
standard forward time delay. Use the no form of this command to disable the
PortFast mode.
Syntax
spanning-tree portfast [auto]
no spanning-tree portfast
Parameters
auto—Specifies that the software waits for 3 seconds (with no BPDUs received on
the interface) before putting the interface into the PortFast mode.
Default Configuration
PortFast mode is disabled.
Command Mode
Interface Configuration (Ethernet, port-channel) mode