Command Line Interface Reference Guide HP BladeSystem PC Blade Switch

22-18 www.hp.com HP PC Blade Switch CLI Reference Guide
Spanning-Tree Commands
spanning-tree mst cost
The spanning-tree mst cost Interface Configuration mode command configures the path cost for
multiple spanning tree (MST) calculations. If a loop occurs, the spanning tree considers path cost
when selecting an interface to put in the forwarding state. To return to the default configuration,
use the no
form of this command.
Syntax
spanning-tree mst
instance-id cost cost
no spanning-tree mst
instance-id cost
Parameters
n instance-ID — ID of the spanning-tree instance (Range: 1-16).
n cost — The port path cost. (Range: 1-200,000,000)
Default Setting
Default path cost is determined by port speed and path cost method (long or short) as shown in
the following table:
Command Modes
Interface Configuration (Ethernet, port-channel) mode
Command Usage
There are no user guidelines for this command.
Example
The following command configures the MSTP instance 1 path cost for Ethernet port e42 to 4.
Interface Long Short
Port-channel 20,000 4
Gigabit Ethernet (1000 Mbps) 20,000 4
Fast Ethernet (100 Mbps) 200,000 19
Ethernet (10 Mbps) 2,000,000 100
console(config) # interface ethernet e42
console(config-if) # spanning-tree mst 1 cost 4