Dell S5148F-ON OS10 Enterprise Edition User Guide Release 10.3.2E-R1 - Page 152
spanning-tree mst, spanning-tree mst force-version, spanning-tree msti
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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 (0 to 63). • priority priority value - Set a bridge priority value in increments of 4096 (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 Command Mode Usage Information Example Not configured CONFIGURATION The MST protocol 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 Supported Releases 10.2.0E or later spanning-tree mst force-version Configures a forced version of STP to transmit BPDUs. Syntax spanning-tree mst force-version {stp | rstp} Parameters • stp - Forces the version for the BPDUs transmitted by MST to STP. • rstp - Forces the version for the BPDUs transmitted by MST to RSTP. Default Command Mode Usage Information Example Not configured CONFIGURATION Forces a bridge that supports MST to operate in a STP-compatible mode. OS10(config)# spanning-tree mst force-version Supported Releases 10.2.0E or later spanning-tree msti Configures the MSTI, cost, and priority values for an interface. Syntax spanning-tree msti instance {cost cost | priority value} 152 Layer 2
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