Spanning-Tree Operation 
802.1s Multiple Spanning Tree Protocol (MSTP) 
Note 
Syntax:  spanning-tree-protocol-version mstp 
Changes the current spanning-tree protocol on the switch to 
802.1s Multiple Spanning Tree. Must be followed by write mem 
and reboot to activate the change. After rebooting, the switch 
is  r ea d y  t o  o p e r a t e  a s a n  M S T P  br i d ge .  No t e  t h a t t h i s  c o mm a n d 
does not enable spanning-tree operation. To activate the 
configured spanning-tree operation on the switch, execute 
spanning-tree. 
Note: When you activate spanning-tree operation or change 
the spanning-tree configuration while spanning tree is 
enabled, the switch must recalculate the network paths it 
uses.To minimize traffic delays while this convergence occurs, 
ProCurve recommends that you not activate spanning tree 
operation until you have finished configuring all devices in 
your network. Refer to “Enabling an Entire MST Region at 
Once or Exchanging One Region Configuration for Another” 
on page 5-72. 
The following commands are available only when the switch is configured for 
MSTP protocol operation. 
Syntax:  [no] spanning-tree config-name < ascii-string > 
This command resets the configuration name of the MST 
region in which the switch resides. This name can include up 
to 32 nonblank characters and is case-sensitive. On all 
switches within a given MST region, the configuration names 
must be identical.  Thus, if you want more than one MSTP 
switch in the same MST region, you must configure the 
identical region name on all such switches. If you retain the 
default configuration name on a switch, it cannot exist in the 
same MST region with another switch. (Default Name: A text 
string using the hexadecimal representation of the switch’s 
MAC address) 
The no form of the command overwrites the currently 
configured name with the default name. 
Note: This option is available only when the switch is 
configured for MSTP operation. Also, there is no defined 
limit on the number of regions you can configure. 
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