Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 487

spanning-tree mst Configures an MST instance and determines root and bridge priorities. Syntax Parameters spanning-tree mst instance number priority | root {primary | secondary} • instance number - Enter an MST instance number, from 0 to 63. For Z9332F-ON platform, enter a MST instance value from 0 to 61. • priority priority value - Set a bridge priority value in increments of 4096, from 0 to 61440. Valid priority values are: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 61440. All other values are rejected. • root - Enter a primary or secondary root. • primary - Enter a device as a primary root. • secondary - Enter a device as a secondary root. Default Not configured Command Mode CONFIGURATION Usage Information 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. Example OS10(config)# spanning-tree mst 0 priority 0 OS10(config)# spanning-tree mst 2 root primary Supported Releases 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 Priority value is 128 Command Mode INTERFACE Usage Information 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. Example 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 Layer 2 487