R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

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• Enable LLDP on the port connecting to an IP phone.
• Configure LLDP to operate in TxRx mode on the port.
Configuration procedure
CDP-compatible LLDP operates in one of the following modes:
• TxRx—CDP packets can be transmitted and received.
• Disable—CDP packets cannot be transmitted or received.
LLDP traps are sent periodically, and the interval is configurable.
To make CDP-compatible LLDP take effect on a ports, follow these steps:
• Enable CDP-compatible LLDP globally.
• 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 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.
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 LLDP trapping and LLDP-MED trapping
LLDP trapping or LLDP-MED trapping notifies the network management system of events such as newly
detected neighboring devices and link failures.
To prevent excessive LLDP traps from being sent when the topology is unstable, set a trap transmission
interval for LLDP.
To configure LLDP trapping and LLDP-MED trapping:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2/Layer 3
Ethernet interface view, or
Layer 3 aggregate interface
view.
interface interface-type interface-number N/A