MST

802.1s Multiple Spanning Trees (MST) Multiple Instance STP (MISTP) Multiple STP (MSTP)

Multiple instances of STP using 802.1Q trunking Always uses RSTP Does not require STP for each VLAN

=Configuration=

config# spanning-tree mode mst config-mst# name WORD config-mst# revision 1 config-mst# instance 

=Benefits=

Only requires 1 instance for a group of VLANS Hundreds of VLANS would only need 1 STP message. PVST would need hundreds