1-12z Disable: The CDP packets can neither be transmitted nor be received.To make CDP-compatible LLDP take effect on certain ports, first enable CDP-compatible LLDP globally,and then configure CDP-compatible LLDP to operate in TxRx mode.Follow these steps to enable LLDP to be compatible with CDP:To do… Use the command… RemarksEnter system view system-view —Enable CDP compatibilityglobally lldp compliance cdp RequiredDisabled by default.Enter Layer 2Ethernet portviewinterface interface-typeinterface-numberEnterEthernetport view orport groupview Enter portgroup view port-group manual port-group-nameRequiredUse either commandConfigure CDP-compatibleLLDP to operate in TxRxmodelldp compliance admin-status cdptxrxRequiredDisable mode by defaultThe maximum TTL value allowed by CDP is 255 seconds. To make CDP-compatible LLDP workproperly with Cisco IP phones, make sure that the product of the TTL multiplier and the LLDPDUtransmit interval is less than 255 seconds.Configuring LLDP TrappingLLDP trapping notifies the network management system (NMS) of events such as newly-detectedneighboring devices and link malfunctions.To prevent excessive LLDP traps from being sent when topology is unstable, you can set a minimumtrap sending interval for LLDP.Follow these steps to configure LLDP trapping:To do… Use the command… RemarksEnter system view system-view —Enter Layer 2Ethernet portviewinterface interface-typeinterface-numberEnterEthernet portview or portgroup view Enter portgroup view port-group manual port-group-nameRequiredUse either commandEnable LLDP trapping lldp notification remote-changeenableRequiredDisabled by defaultQuit to system view quit —Set the interval to send LLDPtrapslldp timer notification-intervalintervalOptional5 seconds by default
