R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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• TxRx—CDP packets can be transmitted and received.
• Disable—CDP packets can be neither transmitted nor received.
LLDP traps are sent periodically, and the interval is configurable. To make CDP-compatible LLDP take
effect on specific ports, first enable CDP-compatible LLDP globally, and then 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, make sure that the product of the TTL multiplier and the LLDPDU transmit interval is
less than 255 seconds.
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 Ethernet interface view
or port group view.
• Enter Layer 2/Layer 3 Ethernet
interface view:
interface interface-type
interface-number
• Enter port group view:
port-group manual
port-group-name
Use either command.
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 LLDP trapping
LLDP trapping notifies the NMS of events such as newly-detected neighboring devices and link
malfunctions.
To prevent excessive LLDP traps from being sent when the topology is unstable, set a trap transmit interval
for LLDP.
To configure LLDP trapping:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter Ethernet interface
view or port group view.
• Enter Layer 2/Layer 3 Ethernet interface
view:
interface interface-type interface-number
• Enter port group view:
port-group manual port-group-name
Use either command.
3. Enable LLDP trapping.
lldp notification remote-change enable
By default, LLDP trapping is
disabled.
4. Return to system view.
quit N/A