Information About Mst - Cisco Nexus 9000 Series Configuration Manual

Configuring MST Using Cisco NX-OS
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Information About MST

See the Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide, for information on creating
Note
Layer 2 interfaces.
MST, which is the IEEE 802.1s standard, allows you to assign two or more VLANs to a spanning tree instance.
MST is not the default spanning tree mode; Rapid per VLAN Spanning Tree (Rapid PVST+) is the default
mode. MST instances with the same name, revision number, and VLAN-to-instance mapping combine to
form an MST region. The MST region appears as a single bridge to spanning tree configurations outside the
region. MST forms a boundary to that interface when it receives an IEEE 802.1D Spanning Tree Protocol
(STP) message from a neighboring device.
Spanning tree is used to refer to IEEE 802.1w and IEEE 802.1s. If the IEEE 802.1D Spanning Tree Protocol
Note
is discussed in this publication, 802.1D is stated specifically.
Information About MST, page 115
Licensing Requirements for MST, page 123
Prerequisites for MST, page 123
Guidelines and Limitations for Configuring MST, page 123
Default Settings for MST, page 125
Configuring MST, page 126
Verifying the MST Configuration, page 147
Displaying and Clearing MST Statistics -- CLI Version, page 148
MST Example Configuration, page 148
Additional References for MST -- CLI Version, page 149
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
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