Spanning-Tree Mst Simulate Pvst - Cisco AP775A - Nexus Converged Network Switch 5010 Command Reference Manual

Chapter 2 Ethernet Commands
S e n d c o m m e n t s t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m

spanning-tree mst simulate pvst

To reenable specific interfaces to automatically interoperate between Multiple Spanning Tree (MST) and
Rapid per VLAN Spanning Tree (Rapid PVST+), use the spanning-tree mst simulate pvst command.
To prevent specific MST interfaces from automatically interoperating with a connecting device running
Rapid PVST+, use the spanning-tree mst simulate pvst disable command. To return specific interfaces
to the default settings that are set globally for the switch, use the no form of this command.
Syntax Description This command has no keywords or arguments.
Command Default
Enabled. By default, all interfaces on the switch interoperate seamlessly between MST and Rapid
PVST+. See
Command Modes
Interface configuration mode
Command History Release
4.0(0)N1(1a)
Usage Guidelines
MST interoperates with Rapid PVST+ with no need for user configuration. The PVST simulation feature
enables this seamless interoperability. However, you may want to control the connection between MST
and Rapid PVST+ to protect against accidentally connecting an MST-enabled port to a Rapid
PVST+-enabled port.
When you use the spanning-tree mst simulate pvst disable command, specified MST interfaces that
receive a Rapid PVST+ (SSTP) BPDU move into the STP blocking state. Those interfaces remain in the
inconsistent state until the port stops receiving Rapid PVST+ BPDUs, and then the port resumes the
normal STP transition process.
To block automatic MST and Rapid PVST+ interoperability for the entire switch, use no spanning-tree
Note
mst simulate pvst global command.
This command is useful when you want to prevent accidental connection with a device running Rapid
PVST+.
To reenable seamless operation between MST and Rapid PVST+ on specific interfaces, use the
spanning-tree mst simulate pvst command.
OL-16599-01
spanning-tree mst simulate pvst
spanning-tree mst simulate pvst disable
no spanning-tree mst simulate pvst
spanning-tree mst simulate pvst global
Modification
This command was introduced.
spanning-tree mst simulate pvst
to change this setting globally.
Cisco Nexus 5000 Series Command Reference
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