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Spanning-Tree Commands
Page 321
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.
Examples
The following example prevents Ethernet port 1/1 from being the root port of the device.
Console(config) #
interface ethernet
1/1
Console(config-mst) #
spanning-tree guard root
Содержание DXS-3250 - xStack Switch - Stackable
Страница 12: ...Page 11 ...
Страница 46: ...ACL Commands Page 45 ...
Страница 68: ...Address Table Commands Page 67 ...
Страница 124: ...Ethernet Configuration Commands Page 123 ...
Страница 134: ...GVRP Commands Page 133 ...
Страница 144: ...IGMP Snooping Commands Page 143 ...
Страница 158: ...IP Addressing Commands Page 157 Console config ip helper address 172 16 9 9 49 53 ...
Страница 166: ...IP Addressing Commands Page 165 ...
Страница 170: ...IP Routing Commands Page 169 Ethernet 1 Specifies the interface through which the specified network can be reached ...
Страница 186: ...Line Commands Page 185 ...
Страница 194: ...Management ACL Commands Page 193 ...
Страница 200: ...PHY Diagnostics Commands Page 199 ...
Страница 208: ...Port Monitor Commands Page 207 ...
Страница 216: ...Power over Ethernet Commands Page 215 ...
Страница 272: ...RMON Commands Page 271 ...
Страница 334: ...Spanning Tree Commands Page 333 ...
Страница 428: ...VLAN Commands Page 427 ...
Страница 465: ...D Link CLI Reference Guide Page 464 Trap frequency 100 Status Single host locked Violations since last trap 9 ...
Страница 466: ...802 1x Commands Page 465 ...