SignaMax SC30010, Справочное руководство CLI

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Chapter 17
| Spanning Tree Commands
– 431 –
Default Setting
By default, the system automatically detects the speed and duplex mode used
on each port, and configures the path cost according to the values shown
below. Path cost “0” is used to indicate auto-configuration mode. When the
short path cost method is selected and the default path cost recommended by
the IEEE 8021w standard exceeds 65,535, the default is set to 65,535. The
default path costs are listed in
Table 86 on page 425 .
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ Each spanning-tree instance is associated with a unique set of VLAN IDs.
◆ This command is used by the multiple spanning-tree algorithm to
determine the best path between devices. Therefore, lower values should
be assigned to interfaces attached to faster media, and higher values
assigned to interfaces with slower media.
◆
Use the no spanning-tree mst cost command to specify auto-
configuration mode.
◆ Path cost takes precedence over interface priority.
Example
Console(config)#interface Ethernet 1/5
Console(config-if)#spanning-tree mst 1 cost 50
Console(config-if)#
Related Commands
spanning-tree mst port-priority (431)
spanning-tree
mst port-priority
This command configures the interface priority on a spanning instance in the
Multiple Spanning Tree. Use the
no form to restore the default.
Syntax
spanning-tree mst instance-id port-priority priority
no spanning-tree mst instance-id port-priority
instance-id - Instance identifier of the spanning tree. (Range: 0-
4094)
priority - Priority for an interface. (Range: 0-240 in steps of 16)
Default Setting
128