Configuration procedure
CDP-compatible LLDP operates in one of the following modes:
Rx—CDP packets can be received but cannot be transmitted.
TxRx—CDP packets can be transmitted and received.
Disable—CDP packets cannot be transmitted or received.
To make CDP-compatible LLDP take effect on ports, follow these steps:
Enable CDP-compatible LLDP globally.
Configure CDP-compatible LLDP to operate in TxRx mode.
The maximum TTL value that CDP allows is 255 seconds. To make CDP-compatible LLDP work correctly with Cisco IP phones, configure the LLDP frame transmission interval to be no more than 1/3 of the TTL value.
To enable LLDP to be compatible with CDP:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable CDP compatibility globally. | lldp compliance cdp | By default, CDP compatibility is disabled globally. |
3. Enter Layer 2/Layer 3 Ethernet interface view or management Ethernet interface view. | interface interface-type interface-number | N/A |
4. Configure CDP-compatible LLDP to operate in TxRx mode. | lldp compliance admin-status cdp txrx | By default, CDP-compatible LLDP operates in disable mode. |