Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.2.1.1
Introduced on the E-Series.
Usage 
Information
You must enable the multiple spanning tree protocol prior to using this command.
Example
FTOS#show spanning-tree mst configuration
MST region name: CustomerSvc
Revision: 2
MSTI VID
  10 101-105
FTOS#
show spanning-tree msti
View the multiple spanning tree instance.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
show spanning-tree msti [instance-number [brief]] [guard]
Parameters
instance-number
(Optional) Enter the multiple spanning tree instance number. The 
range is 0 to 63.
brief (Optional) Enter the keyword brief to view a synopsis of the MST 
instance.
guard (Optional) Enter the keyword guard to display the type of guard 
enabled on an MSTP interface and the current port state.
Command Modes
• EXEC
• EXEC Privilege
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.4.2.1 Support for the optional keyword guard was added on the C-Series, 
S-Series, and E-Series TeraScale.
Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
1000