Supermicro SSE-G2252, User Manual

Page: 1027 / 1401

Chapter 34: Spanning Tree Commands
– 1040 –
The recommended path cost range is listed in Table 34-2 on
page 1034 .
D
EFAULT
S
ETTING
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 34-3 on page 1035 .
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
•
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.
E
XAMPLE
Console(config)#interface Ethernet 1/5
Console(config-if)#spanning-tree mst 1 cost 50
Console(config-if)#
R
ELATED
C
OMMANDS
spanning-tree mst port-priority (1040)
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.
S
YNTAX
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)
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EFAULT
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ETTING
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