HP ProCurve 5300xl Series Management Manual page 245

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 6-69.)
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 6-33. Example of Displaying a Pending Configuration
Spanning-Tree Operation
802.1s Multiple Spanning Tree Protocol (MSTP)
6-77