Enabling Rapid Pvst+ Per Vlan - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Enabling Rapid PVST+ per VLAN

Step 2
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.
Note Rapid PVST+ is enabled by default on the default VLAN and on all VLANs that you create.
Procedure
Step 1
Step 2
Step 3
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
166
Command or Action
switch(config)# spanning-tree
mode rapid-pvst
Command or Action
switch# configure
terminal
switch(config)#
spanning-tree vlan-range
switch(config)# no
spanning-tree vlan-range
Purpose
Enables Rapid PVST+ on the switch. Rapid PVST+ is the
default spanning tree mode.
Changing the spanning tree mode disrupts traffic
Note
because all spanning tree instances are stopped for
the previous mode and started for the new mode.
Purpose
Enters configuration mode.
Enables Rapid PVST+ (default STP) on a per VLAN basis. The
vlan-range value can be 2 through 4094 (except reserved VLAN
values).
(Optional)
Disables Rapid PVST+ on the specified VLAN.
Caution Do not disable spanning tree on a VLAN unless all switches
and bridges in the VLAN have spanning tree disabled. You
cannot disable spanning tree on some of the switches and
bridges in a VLAN and leave it enabled on other switches
and bridges. This action can have unexpected results
because switches and bridges with spanning tree enabled
will have incomplete information regarding the physical
topology of the network.
Do not disable spanning tree in a VLAN without ensuring
that there are no physical loops present in the VLAN.
Spanning tree serves as a safeguard against
misconfigurations and cabling errors.
Configuring Rapid PVST+
OL-16597-01