Configuring Rapid Pvst; Guidelines For Configuring Rapid Pvst; Enabling Rapid Pvst+-Cli Version - Cisco Nexus 7000 Series Configuration Manual

Configuring Rapid PVST+

Configuring Rapid PVST+

Rapid PVST+, which has the 802.1 w standard applied to the PVST+ protocol, is the default STP setting in
the device.
You enable Rapid PVST+ on a per-VLAN basis. The device maintains a separate instance of STP for each
VLAN (except on those VLANS on which you disable STP). By default, Rapid PVST+ is enabled on the
default VLAN and on each VLAN that you create.

Guidelines for Configuring Rapid PVST+

Ensure that you are in the correct VDC (see the Cisco Nexus 7000 Series NX-OS Virtual Device Context
Configuration Guide).
Enabling Rapid PVST+—CLI Version
If you disable Rapid PVST+ on any VLANs, you must reenable Rapid PVRST+ on the specified VLANs. If
you have enabled MST on the device and now want to use Rapid PVST+, you must enable Rapid PVST+ on
the device.
Rapid PVST+ is the default STP mode. You cannot simultaneously run MST and Rapid PVST+ in the same
VDC.
However, one VDC can run Rapid PVST+ and a different VDC can run MST.
Note When you change the spanning tree mode, traffic is disrupted because all spanning tree instances are
stopped for the previous mode and started for the new mode.
Before You Begin
Ensure that you are in the correct VDC (or enter the switchto vdc command).
SUMMARY STEPS
1. config t
2. spanning-tree mode rapid-pvst
3. exit
4. (Optional) show running-config spanning-tree all
5. (Optional) copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
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Configuring Rapid PVST+ Using Cisco NX-OS