Reference Guide

Multiple Spanning Tree Protocol (MSTP) | 949
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
Defaults
cost = depends on the interface type; priority = 128
Command Modes
INTERFACE
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
priority priority Enter keyword priority followed by a value in increments of 16 as the priority.
Range: 0 to 240.
Default: 128