With CDP compatibility enabled, your device can receive and recognize CDP packets from a Cisco IP phone and respond with CDP packets, which carry the voice VLAN configuration TLVs. The voice traffic is confined in the configured voice VLAN, and differentiated from other types of traffic.
∙TxRx: CDP packets can be transmitted and received.
∙Disable: CDP packets cannot be transmitted or received.
Protocols and standards
∙IEEE
∙
LLDP configuration task list
Perform the tasks in 1 to configure LLDP:
1.LLDP configuration task list
Task | Remarks | |
| Optional | |
Enabling LLDP on ports | By default, LLDP is enabled on ports. | |
Make sure that LLDP is also enabled globally, because LLDP can work on a port | ||
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| only when it is enabled both globally and on the port. | |
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| Optional | |
| LLDP settings include LLDP operating mode, packet encapsulation, CDP | |
| compatibility, device information polling, trapping, and advertised TLVs. | |
Configuring LLDP settings | By default, | |
∙ The LLDP operating mode is TxRx. | ||
on ports | ||
∙ The encapsulation format is Ethernet II. | ||
| ||
| ∙ CDP compatibility is disabled. | |
| ∙ Device information polling and trapping are disabled. | |
| ∙ All TLVs except the Location Identification TLV are advertised. | |
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| |
Configuring global LLDP | Required | |
By default, global LLDP is disabled. | ||
setup | ||
To enable LLDP to work on a port, enable LLDP both globally and on the port. | ||
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| Optional | |
| You can display the local LLDP information, neighbor information, statistics, and | |
Displaying LLDP | status information of a port, where | |
information for a port | ∙ The local LLDP information refers to the TLVs to be advertised by the local | |
| device to neighbors. | |
| ∙ The neighbor information refers to the TLVs received from neighbors. | |
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