HP Cisco Nexus 5000 Cisco Nexus 5000 Series Switch CLI Software Configuration - Page 230

Entering MST Configuration Mode Configuring MST Procedure Step 1 Step 2 Step 3 Command or Action switch# configure terminal Purpose Enters configuration mode. switch(config)# spanning-tree mode mst Enables MST on the switch. switch(config)# no spanning-tree mode mst (Optional) Disables MST on the switch and returns you to Rapid PVST+. This example shows how to enable MST on the switch: switch# configure terminal switch(config)# spanning-tree mode mst Note Because STP is enabled by default, entering a show running-config command to view the resulting configuration does not display the command that you entered to enable STP. Entering MST Configuration Mode You enter MST configuration mode to configure the MST name, VLAN-to-instance mapping, and MST revision number on the switch. For two or more switches to be in the same MST region, they must have the identical MST name, VLAN-to-instance mapping, and MST revision number. Note Each command reference line creates its pending regional configuration in MST configuration mode. In addition, the pending region configuration starts with the current region configuration. When you are working in MST configuration mode, note the difference between the exit and abort commands. Procedure Step 1 Step 2 Command or Action switch# configure terminal Purpose Enters configuration mode. switch(config)# spanning-tree Enters MST configuration mode on the system. You must be mst configuration in the MST configuration mode to assign the MST configuration parameters, as follows: • MST name • Instance-to-VLAN mapping • MST revision number • Synchronize primary and secondary VLANs in private VLANs Cisco Nexus 5000 Series Switch CLI Software Configuration Guide 184 OL-16597-01