Dell MX9116n EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 542

Usage Information Example Supported Releases The MSTP determines the root bridge but you can assign one bridge a lower priority to increase the probability it being the root bridge. A lower priority-value increases the probability of the bridge becoming a root bridge. The no version of this command resets the value to the default. OS10(config)# spanning-tree mst 0 priority 0 OS10(config)# spanning-tree mst 2 root primary 10.2.0E or later spanning-tree msti Configures the MSTI, cost, and priority values for an interface. Syntax Parameters spanning-tree msti instance {cost cost | priority value} ● msti instance - Enter the MST instance number, from 0 to 63. For Z9332F-ON platform, enter a MST instance value from 0 to 61. ● cost cost - (Optional) Enter a port cost value, from 1 to 200000000. Default values: ○ 100 Mb/s Ethernet interface = 200000 ○ 1-Gigabit Ethernet interface = 20000 ○ 10-Gigabit Ethernet interface = 2000 ○ Port-channel interface with one 100 Mb/s Ethernet = 200000 ○ Port-channel interface with one 1 Gigabit Ethernet = 20000 ○ Port-channel interface with one 10 Gigabit Ethernet = 2000 ○ Port-channel with two 1 Gigabit Ethernet = 18000 ○ Port-channel with two 10 Gigabit Ethernet = 1800 ○ Port-channel with two 100 Mbps Ethernet = 180000 ● priority value - Enter a value in increments of 16 as the priority, from 0 to 240, default 128. Default Command Mode Usage Information Example Priority value is 128 INTERFACE The cost value is based on the interface type. The greater the cost value, the less likely the port is selected to be a forwarding port. The priority influences the likelihood that a port is selected to be a forwarding port if several ports have the same cost value. OS10(conf-if-eth1/1/1)# spanning-tree msti 1 priority 0 OS10(conf-if-eth1/1/1)# spanning-tree msti 1 cost 3 Supported Releases 10.2.0E or later spanning-tree mst configuration Enters MST mode to configure MSTP from Configuration mode. Syntax Parameters Default Command Mode Usage Information Example spanning-tree mst configuration None Disabled CONFIGURATION Use this command to enter STP MST configuration mode. OS10(config)# spanning-tree mst configuration OS10(conf-mst)# 542 Layer 2