Specifying The Link Type For Rapid Pvst+-Cli Version - Cisco Nexus 7000 Series Configuration Manual

Configuring Rapid PVST+ Using Cisco NX-OS
Specifying the Link Type for Rapid PVST+—CLI Version
Rapid connectivity (802.1w standard) is established only on point-to-point links. By default, the link type is
controlled from the duplex mode of the interface. A full-duplex port is considered to have a point-to-point
connection; a half-duplex port is considered to have a shared connection.
If you have a half-duplex link physically connected point to point to a single port on a remote device, you can
override the default setting on the link type and enable rapid transitions.
If you set the link to shared, STP falls back to 802.1D.
Before You Begin
Ensure that you are in the correct VDC (or enter the switchto vdc command).
SUMMARY STEPS
1. config t
2. interface type slot/port
3. spanning-tree link-type {auto | point-to-point | shared}
4. exit
5. (Optional) show spanning-tree
6. (Optional) copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1 config t
Example:
switch# config t
switch(config)#
Step 2 interface type slot/port
Example:
switch(config)# interface ethernet 1/4
switch(config-if)#
Step 3
spanning-tree link-type {auto | point-to-point |
shared}
Example:
switch(config-if)# spanning-tree link-type
point-to-point
Step 4
exit
Example:
switch(config-if)# exit
switch(config)#
Purpose
Enters global configuration mode.
Specifies the interface to configure and enters interface
configuration mode.
Configures the link type to be either a point-to-point link or
shared link. The system reads the default value from the device
connection, as follows: half duplex links are shared and
full-duplex links are point to point. If the link type is shared,
the STP falls back to 802.1D. The default is auto, which sets
the link type based on the duplex setting of the interface.
Exits interface configuration mode.
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
Specifying the Link Type for Rapid PVST+—CLI Version
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