S
PANNING
T
REE
C
OMMANDS
29-22
spanning-tree mst cost
This command configures the path cost on a spanning instance in the
Multiple Spanning Tree. Use the
no
form to restore the default
auto-configuration mode.
Syntax
spanning-tree mst
instance_id
cost
cost
no spanning-tree mst
instance_id
cost
•
instance_id
- Instance identifier of the spanning tree.
(Range: 0-4094, no leading zeroes)
•
cost
- Path cost for an interface. (Range: 1-200,000,000)
(Range: 0 for auto-configuration, 1-65535 for short path cost
method
29
, 1-200,000,000 for long path cost method)
The recommended path cost range is listed in Table 29-2
on page 29-16. The recommended path cost is listed in
Table 29-3 on page 29-16.
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 29-4 on
page 29-17.
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
29. Use the spanning-tree pathcost method command on page 29-9 to set the path cost method.
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Страница 24: ...TABLE OF CONTENTS xxiv ...
Страница 28: ...TABLES xxviii ...
Страница 32: ...FIGURES xxxii Figure 16 3 DNS Cache 16 7 ...
Страница 34: ...GETTING STARTED ...
Страница 46: ...SYSTEM DEFAULTS 1 12 ...
Страница 62: ...SWITCH MANAGEMENT ...
Страница 74: ...CONFIGURING THE SWITCH 3 12 ...
Страница 112: ...BASIC MANAGEMENT TASKS 4 38 ...
Страница 168: ...USER AUTHENTICATION 6 30 ...
Страница 223: ...SHOWING PORT STATISTICS 9 33 Figure 9 12 Port Statistics ...
Страница 230: ...ADDRESS TABLE SETTINGS 10 6 ...
Страница 304: ...CLASS OF SERVICE 13 16 ...
Страница 316: ...QUALITY OF SERVICE 14 12 ...
Страница 338: ...MULTICAST FILTERING 15 22 ...
Страница 346: ...DOMAIN NAME SERVICE 16 8 ...
Страница 348: ...COMMAND LINE INTERFACE IP Interface Commands 35 1 ...
Страница 362: ...OVERVIEW OF COMMAND LINE INTERFACE 17 14 ...
Страница 426: ...SYSTEM MANAGEMENT COMMANDS 19 56 Example Console show calendar 15 12 34 February 1 2002 Console ...
Страница 494: ...USER AUTHENTICATION COMMANDS 21 48 ...
Страница 514: ...CLIENT SECURITY COMMANDS 22 20 ...
Страница 540: ...ACCESS CONTROL LIST COMMANDS 23 26 ...
Страница 558: ...INTERFACE COMMANDS 24 18 ...
Страница 576: ...MIRROR PORT COMMANDS 26 4 ...
Страница 582: ...RATE LIMIT COMMANDS 27 6 ...
Страница 616: ...SPANNING TREE COMMANDS 29 28 ...
Страница 644: ...VLAN COMMANDS 30 28 ...
Страница 664: ...CLASS OF SERVICE COMMANDS 31 20 ...
Страница 678: ...QUALITY OF SERVICE COMMANDS 32 14 ...
Страница 720: ...APPENDICES ...
Страница 726: ...SOFTWARE SPECIFICATIONS A 6 ...
Страница 730: ...TROUBLESHOOTING B 4 ...
Страница 746: ...INDEX Index 6 ...
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