Spanning-Tree Mst 0 External-Cost - Dell PowerConnect 8024 Cli Reference Manual

rstp — Rapid Spanning Tree Protocol (RSTP) is enabled.
•
• mstp — Multiple Spanning Tree Protocol (MSTP) is enabled.
Default Configuration
Rapid Spanning Tree Protocol (RSTP) is supported.
Command Mode
Global Configuration mode
User Guidelines
In RSTP mode the switch would use STP when the neighbor switch is using STP . In MSTP
mode the switch would use RSTP when the neighbor switch is using RSTP and would use STP
when the neighbor switch is using STP.
Example
The following example configures the spanning-tree protocol to MSTP.
console(config)#spanning-tree mode mstp

spanning-tree mst 0 external-cost

Use the spanning-tree mst 0 external-cost command to set the external cost for the common
spanning tree. Use the "no" form of this command to reset the external cost to the default.
Syntax
spanning-tree mst 0 external-cost
no spanning-tree mst 0 external-cost
cost — The external cost of the common spanning tree (Range: 0–200000000).
•
Default Configuration
The default cost is 0, which signifies that the cost is automatically calculated based on port
speed.
Port Channel — 20,000
10 Gbps — 2000
1 Gbps — 20,000
100 Mbps — 200,000
10 Mbps — 2,000,000
cost
Spanning Tree Commands
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