Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 484

ethernet tcn-propagation Use the ethernet tcn-propagation command to enable topology change notification from a sub-ring to the major ring. Use the no form of the command to disable TCN propagation. Syntax ethernet tcn-propagation g8032 to g8032 Default Configuration TCN propagation is disabled by default. Command Mode Interface (Ethernet) Configuration mode User Guidelines This command enables topology change propagation from sub-ring to a major ring. If TCN is enabled globally, it is applied to all the instances configured on the switch. If the global and instance mode configured value is the same, this command is not shown in the instance mode section in running-config. Example This example configures a closed ring node for interface Te1/0/1 and Te1/0/2 using data VLANs 101-103. It assumes that VLANs 100-103 are already created. A single instance is created and associated with ERP profile1. The profile sets the hold-off timer to 500 milliseconds. Interface Te1/0/2 is configured in the Owner role. Interface Te1/0/2 connects to an adjacent switch port Te1/0/1. Traffic is blocked on these two ports under normal conditions. VLANs 101-103 are protected. VLAN 100 is used as the Automatic Protection Switching (APS) VLAN. Only Ethernet CFM messages at maintenance level 7 are monitored. console (config)# ethernet ring g8032 ring1 console (config-erp-ring1)#port0 interface te1/0/1 console (config-erp-ring1)#port1 none console (config-erp-ring1)#open-ring console (config-erp-ring1)#exit console (config)#interface Te1/0/2 console (config-if-Te1/0/2)#switchport mode trunk Layer 2 Switching Commands 484