Enabling Rapid Pvst; Enabling Rapid Pvst+ Per Vlan - Cisco Nexus 3000 series Configuration Manual

Enabling Rapid PVST+

You enable Rapid PVST+ on a per-VLAN basis. The software 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.
Enabling Rapid PVST+
Once you enable Rapid PVST+ on the switch, you must enable Rapid PVST+ on the specified VLANs.
Rapid PVST+ is the default STP mode. You cannot simultaneously run MST and Rapid PVST+.
Changing the spanning tree mode disrupts traffic because all spanning tree instances are stopped for the
Note
previous mode and started for the new mode.
SUMMARY STEPS
1. switch# configure terminal
2. switch(config)# spanning-tree mode rapid-pvst
DETAILED STEPS
Command or Action
Step 1 switch# configure terminal
Step 2 switch(config)# spanning-tree mode
rapid-pvst
This example shows how to enable Rapid PVST+ on the switch:
switch# configure terminal
switch(config)# spanning-tree mode rapid-pvst
Because STP is enabled by default, entering the show running-config command to view the resulting
Note
configuration does not display the command that you entered to enable Rapid PVST+.

Enabling Rapid PVST+ per VLAN

You can enable or disable Rapid PVST+ on each VLAN.
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U1(1)
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Purpose
Enters configuration mode.
Enables Rapid PVST+ on the switch. Rapid PVST+ is the default spanning
tree mode.
Changing the spanning tree mode disrupts traffic because all
Note
spanning tree instances are stopped for the previous mode and
started for the new mode.
Configuring Rapid PVST+