Spanning-Tree Operation 
802.1s Multiple Spanning Tree Protocol (MSTP) 
Displaying the Pending MSTP Configuration.  This command displays 
the MSTP configuration the switch will implement if you execute the span-
ning-tree pending apply command (Refer to “Enabling an Entire MST Region 
at Once or Exchanging One Region Configuration for Another” on page 5-72.) 
Syntax:  show spanning-tree pending < instance | mst-config > 
instance < 1..16 | ist > 
Lists region, instance I.D. and VLAN information for the 
specified, pending instance. 
mst-config 
Lists region, IST instance VLAN(s),  numbered instances, 
and assigned VLAN information for the pending MSTP 
configuration. 
Figure 5-33.  Example of Displaying a Pending Configuration 
5-80