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Configuration procedure
CDP-compatible LLDP operates in one of the following modes:
•
TxRx
—CDP packets can be transmitted and received.
•
Rx
—CDP packets can be received but cannot be transmitted.
•
Disable
—CDP packets cannot be transmitted or received.
To make CDP-compatible LLDP take effect on a port, follow these steps:
1.
Enable CDP-compatible LLDP globally.
2.
Configure CDP-compatible LLDP to operate in TxRx mode on the port.
The maximum TTL value that CDP allows is 255 seconds. To make CDP-compatible LLDP work
correctly with CDP devices, configure the LLDP frame transmission interval to be no more than 1/3 of
the TTL value.
To configure 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,
management Ethernet
interface view, or Layer
2/Layer 3 aggregate
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.
Configuring DCBX
Data Center Ethernet (DCE), also known as Converged Enhanced Ethernet (CEE), is enhancement
and expansion of traditional Ethernet local area networks for use in data centers. DCE uses the Data
Center Bridging Exchange Protocol (DCBX) to negotiate and remotely configure the bridge capability
of network elements.
DCBX has the following self-adaptable versions:
•
DCB Capability Exchange Protocol Specification Rev 1.00.
•
DCB Capability Exchange Protocol Base Specification Rev 1.01.
•
IEEE Std 802.1Qaz-2011 (Media Access Control (MAC) Bridges and Virtual Bridged Local Area
Networks-Amendment 18: Enhanced Transmission Selection for Bandwidth Sharing Between
Traffic Classes).
DCBX offers the following functions:
•
Discovers the peer devices' capabilities and determines whether devices at both ends support
these capabilities.
•
Detects configuration errors on peer devices.
•
Remotely configures the peer device if the peer device accepts the configuration.