D-Link DGS-6600-48TS Configuration Guide - Page 148
Root Guard, TCN Filter, Displaying the Optional Feature Settings
View all D-Link DGS-6600-48TS manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 148 highlights
Volume 3-Layer 2 Configurations / Chapter 14-Spanning Tree Protocol (STP) Configuration STP Configuration Commands Root Guard The user can restrict a port from becoming a root port for some applications. This feature is typically used in a service-provider environment, where the network administrator wants to prevent a low speed port being a root for the local bridge networks. When this restriction is applied, the port will become alternate port and relinquish the root port role to another candidate port. Use the following command to enable the root guard feature on an interface: Command spanning-tree guard root Explanation Enables the root guard feature on the specified interface. In the following example, the user enables the root guard feature on Ethernet interface 4.47: DGS-6600:2>enable DGS-6600:15#configure terminal DGS-6600:15(config)#interface eth4.47 DGS-6600:15(config-if)#spanning-tree guard root DGS-6600:15(config-if)#end TCN Filter When the Topology Change Notification (TCN) filter is enabled for a port, the TCN notification received by the port will not be propagated. One of the applications of this function is to prevent bridges that are external to a core region of the network from causing address flushing in that region, possibly because those bridges are not under the full control of the administrator. Use the following command to enable TCN filtering on an interface: Command spanning-tree tcnfilter Explanation Enables the TCN filter on the specified interface. In the following example, the user enables TCN filtering on Ethernet interface 4.5: DGS-6600:2>enable DGS-6600:15#configure terminal DGS-6600:15(config)#interface eth4.5 DGS-6600:15(config-if)#spanning-tree tcnfilter DGS-6600:15(config-if)#end Displaying the Optional Feature Settings Use the following command to verify the MSTP optional feature settings: Command show spanning-tree mst interface INTERFACE-ID [, | -] DGS-6600 Configuration Guide Explanation Displays the configuration for the MSTP optional feature settings. 148