4A default S-channel is created on an interface after EVB is enabled on the interface. Both SCID and SVIDare 1. After an S-channel is created, an S-channel interface or S-channel aggregate interface is createdand operates in access mode.Do not enable both EVB and VLAN mapping, both EVB and TRILL, or both EVB and QinQ on the sameinterface.Do not create a service instance for an interface enabled with EVB, and vice versa.Do not assign interfaces enabled with EVB and not configured with the trill evb-support command to thesame VLAN as interfaces enabled with TRILL. For more information about TRILL, see TRILL ConfigurationGuide. For more information about the trill evb-support command, see TRILL Command Reference.To enable EVB:Step Command Remarks1. Enter system view. system-view N/A2. Enter Layer 2 Ethernetinterface view or Layer 2aggregate interface view.interface interface-typeinterface-number N/A3. Enable EVB. evb enable By default, EVB is disabled on aninterface.Configuring LLDPEVB uses LLDP to transmit CDCP TLVs, and CDCP TLVs are carried by the LLDP packet that is addressedusing the Nearest non-TPMR Bridge address, so you must configure LLDP.For detailed information about the lldp global enable, lldp enable and lldp agent nearest-nontpmradmin-status commands, see Layer 2—LAN Switching Command Reference.To configure LLDP:Step Command Remarks1. Enter system view. system-view N/A2. Enable LLDP globally. lldp global enable By default, LLDP is disabledglobally.3. Enter Layer 2 Ethernetinterface view or Layer 2aggregate interface view.interface interface-typeinterface-number N/A4. Enable LLDP on the interface lldp enable By default, LLDP is enabled on aninterface.5. Configure the Nearestnon-TPMR Bridge agent forLLDP to operate in TxRx mode.lldp agent nearest-nontpmradmin-status txrx The default mode is disable.