Command Line Reference Guide

Multiple Spanning Tree Protocol (MSTP) | 911
spanning-tree
c e s
Enable Multiple Spanning Tree Protocol on the interface.
Syntax
spanning-tree
To disable the Multiple Spanning Tree Protocol on the interface, use no spanning-tree
Parameters
Defaults
Enable
Command Modes
INTERFACE
Command
History
spanning-tree msti
c e s
Configure Multiple Spanning Tree instance cost and priority for an interface.
Syntax
spanning-tree msti instance {cost cost | priority priority}
Parameters
Table 36-90. show spanning-tree msti guard Command Information
Field Description
Interface Name MSTP interface
Instance MSTP instance
Sts Port state: root-inconsistent (INCON Root), forwarding (FWD), listening (LIS),
blocking (BLK), or shut down (EDS Shut)
Guard Type Type of STP guard configured (Root, Loop, or BPDU guard)
spanning-tree Enter the keyword spanning-tree to enable the MSTP on the interface.
Default: Enable
Version 7.6.1.0 Added support for S-Series
Version 7.5.1.0 Added support for C-Series
pre-Version 6.2.1.0 Introduced on E-Series
msti instance Enter the keyword msti and the MST Instance number.
Range: zero (0) to 63
cost cost (OPTIONAL) Enter the keyword cost followed by the port cost value.
Range: 1 to 200000
Defaults:
100 Mb/s Ethernet interface = 200000
1-Gigabit Ethernet interface = 20000
10-Gigabit Ethernet interface = 2000
Port Channel interface with one 100 Mb/s Ethernet = 200000
Port Channel interface with one 1-Gigabit Ethernet = 20000
Port Channel interface with one 10-Gigabit Ethernet = 2000
Port Channel with two 1-Gigabit Ethernet = 18000
Port Channel with two 10-Gigabit Ethernet = 1800
Port Channel with two 100-Mbps Ethernet = 180000