C
HAPTER
37
| Spanning Tree Commands
– 874 –
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.
Table 98: Default STA Path Costs
Port Type
Short Path Cost
(IEEE 802.1D-1998)
Long Path Cost
(802.1D-2004)
Fast Ethernet
100,000
100,000
Gigabit Ethernet
10,000
10,000
10G Ethernet
1,000
1,000
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
◆
This command is used by the Spanning Tree Algorithm to determine the
best path between devices. Therefore, lower values should be assigned
to ports attached to faster media, and higher values assigned to ports
with slower media.
◆
Path cost takes precedence over port priority.
◆
When the path cost method (
page 866
) is set to short, the maximum
value for path cost is 65,535.
E
XAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree cost 50
Console(config-if)#
spanning-tree edge-
port
This command specifies an interface as an edge port. Use the
no
form to
restore the default.
S
YNTAX
[
no
]
spanning-tree edge-port
D
EFAULT
S
ETTING
Disabled
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
Summary of Contents for LGB6026A
Page 6: ...ABOUT THIS GUIDE 4...
Page 40: ...38 CONTENTS...
Page 60: ...58 SECTION I Getting Started...
Page 86: ...84 SECTION II Web Configuration Unicast Routing on page 517 Multicast Routing on page 575...
Page 162: ...160 CHAPTER 5 Interface Configuration VLAN Trunking...
Page 196: ...194 CHAPTER 6 VLAN Configuration Configuring MAC based VLANs...
Page 204: ...CHAPTER 7 Address Table Settings Clearing the Dynamic Address Table 202...
Page 238: ...CHAPTER 11 Class of Service Layer 2 Queue Settings 236...
Page 254: ...252 CHAPTER 12 Quality of Service Attaching a Policy Map to a Port...
Page 448: ...446 CHAPTER 16 Multicast Filtering Multicast VLAN Registration...
Page 470: ...468 CHAPTER 17 IP Configuration Setting the Switch s IP Address IP Version 6...
Page 576: ...574 CHAPTER 21 Unicast Routing Configuring the Open Shortest Path First Protocol Version 2...
Page 606: ...604 CHAPTER 22 Multicast Routing Configuring PIMv6 for IPv6...
Page 620: ...618 CHAPTER 23 Using the Command Line Interface CLI Command Groups...
Page 672: ...670 CHAPTER 25 System Management Commands Time Range...
Page 692: ...690 CHAPTER 26 SNMP Commands...
Page 700: ...698 CHAPTER 27 Remote Monitoring Commands...
Page 854: ...CHAPTER 34 Port Mirroring Commands Local Port Mirroring Commands 852...
Page 862: ...860 CHAPTER 36 Address Table Commands...
Page 958: ...956 CHAPTER 40 Quality of Service Commands...
Page 1034: ...1032 CHAPTER 42 LLDP Commands...
Page 1044: ...1042 CHAPTER 43 Domain Name Service Commands...
Page 1062: ...1060 CHAPTER 44 DHCP Commands DHCP Server...
Page 1206: ...CHAPTER 47 IP Routing Commands Open Shortest Path First OSPFv3 1204...
Page 1250: ...1248 SECTION IV Appendices...
Page 1256: ...1254 APPENDIX A Software Specifications Management Information Bases...
Page 1278: ...1276 COMMAND LIST...