228
C
HAPTER
15: S
PANNING
-T
REE
C
OMMANDS
Command Mode
MST Configuration mode
User Guidelines
There are no user guidelines for this command.
Example
The following example exits the MST Configuration mode without saving
changes.
spanning-tree
guard root
The
spanning-tree guard root
Interface Configuration (Ethernet,
port-channel) mode command enables root guard on all spanning tree
instances on the interface. Root guard prevents the interface from
becoming the root port of the device. To disable root guard on the
interface, use the
no
form of this command.
Syntax
spanning-tree guard root
no spanning-tree guard root
Default Configuration
Root guard is disabled.
Command Mode
Interface Configuration (Ethernet, port-channel) mode
User Guidelines
Root guard can be enabled when the device operates in STP, RSTP and
MSTP.
When root guard is enabled, the port changes to the alternate state if
spanning-tree calculations selects the port as the root port.
Console(config) #
spanning-tree mst configuration
Console(config-mst) #
abort
Summary of Contents for 3CRUS2475 24
Page 18: ......
Page 40: ...40 CHAPTER 2 AAA COMMANDS ...
Page 54: ...54 CHAPTER 3 ACL COMMANDS ...
Page 76: ...76 CHAPTER 4 ADDRESS TABLE COMMANDS ...
Page 166: ...166 CHAPTER 10 CLOCK COMMANDS ...
Page 200: ...200 CHAPTER 13 LACP COMMANDS ...
Page 208: ...208 CHAPTER 14 POWER OVER ETHERNET COMMANDS ...
Page 262: ...262 CHAPTER 15 SPANNING TREE COMMANDS ...
Page 278: ...278 CHAPTER 17 RADIUS COMMAND ...
Page 281: ...show ports monitor 281 g1 8 RX TX Active g2 8 RX TX Active g18 8 RX Active ...
Page 282: ...282 CHAPTER 18 PORT MONITOR COMMANDS ...
Page 306: ...306 CHAPTER 19 SNMP COMMANDS ...
Page 316: ...316 CHAPTER 20 IP ADDRESS COMMANDS ...
Page 330: ...330 CHAPTER 22 WIRELESS ROGUE AP COMMANDS ...
Page 350: ...350 CHAPTER 23 WIRELESS ESS COMMANDS ...
Page 382: ...382 CHAPTER 25 SSH COMMANDS ...
Page 400: ...400 CHAPTER 27 TACACS COMMANDS Global values TimeOut 3 ...
Page 444: ...444 CHAPTER 31 USER INTERFACE COMMANDS ...
Page 454: ...454 CHAPTER 32 GVRP COMMANDS ...
Page 492: ...492 CHAPTER 34 802 1X COMMANDS ...
Page 521: ...Troubleshooting Solutions 521 ...
Page 522: ...522 CHAPTER 37 TROUBLESHOOTING ...