4000 Router Series Layer 2 - LAN Switching Configuration Guide

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Ste

Command

Remarks

3. Set the LLDPDU transmit

interval.

lldp timer tx-interval interval

The default setting is 30

seconds.

4. Set the token bucket size for

sending LLDPDUs.

lldp max-credit credit-value The default setting is 5.

5. Set the LLDPDU transmit delay.

lldp timer tx-delay delay The default setting is 2 seconds.

6. Set the number of LLDPDUs

sent each time fast LLDPDU

transmission is triggered.

lldp fast-count count The default setting is 4.

7. Set an interval for fast LLDPDU

transmission.

lldp timer fast-interval interval The default setting is 1 second.

Setting an encapsulation format for LLDPDUs

LLDPDUs can be encapsulated in the following formats: Ethernet II or SNAP frames.

• With Ethernet II encapsulation configured, an LLDP port sends LLDPDUs in Ethernet II frames.

• With SNAP encapsulation configured, an LLDP port sends LLDPDUs in SNAP frames.

To set the encapsulation format for LLDPDUs to SNAP:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Layer 2 or Layer 3

Ethernet interface view.

interface interface-type interface-number N/A

3. Set the encapsulation

format for LLDPDUs to

SNAP.

lldp [ agent { nearest-customer |

nearest-nontpmr } ] encapsulation snap

By default, Ethernet II

encapsulation format

applies.

NOTE:

LLDP of earlier versions requires the same encapsulation format on both ends to process LLDPDUs. For this

reason, to communicate stably with a neighboring device running LLDP of earlier versions, the local device

should be configured with the same encapsulation format.

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 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 and LLDP-MED trapping:

Step Command Remarks

1. Enter system view.

system-view N/A