【案例分享】LLDP基本功能配置
发布作者：微思网络 发布时间：2022-07-06 浏览量：0次
NMS（Network Management System，网络管理系统）与Device A相连，Device A通过接口GigabitEthernet1/0/1和GigabitEthernet1/0/2分别与MED设备和Device B相连。 通过在Device A和Device B上配置LLDP功能，使NMS可以对Device A与MED设备之间、以及Device A与Device B之间链路的通信情况进行判断。 图1-5 LLDP基本功能配置组网图 (1) 配置Device A (2) 配置Device B 由此可见，Device A的接口GigabitEthernet1/0/2上已经没有任何邻居设备了。# 全局开启LLDP功能。
<DeviceA> system-view
[DeviceA] lldp global enable
# 在接口GigabitEthernet1/0/1和GigabitEthernet1/0/2上分别开启LLDP功能（此步骤可省略，LLDP功能在接口上缺省开启），并配置LLDP工作模式为Rx。
[DeviceA] interface gigabitethernet 1/0/1
[DeviceA-GigabitEthernet1/0/1] lldp enable
[DeviceA-GigabitEthernet1/0/1] lldp admin-status rx
[DeviceA-GigabitEthernet1/0/1] quit
[DeviceA] interface gigabitethernet 1/0/2
[DeviceA-GigabitEthernet1/0/2] lldp enable
[DeviceA-GigabitEthernet1/0/2] lldp admin-status rx
[DeviceA-GigabitEthernet1/0/2] qui# 全局开启LLDP功能。
<DeviceB> system-view
[DeviceB] lldp global enable
# 在接口GigabitEthernet1/0/1上开启LLDP功能（此步骤可省略，LLDP功能在接口上缺省开启），并配置LLDP工作模式为Tx。
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] lldp enable
[DeviceB-GigabitEthernet1/0/1] lldp admin-status tx
[DeviceB-GigabitEthernet1/0/1] qui# 显示Device A上全局和所有接口的LLDP状态信息。
[DeviceA] display lldp status
Global status of LLDP: Enable
Bridge mode of LLDP: customer-bridge
The current number of LLDP neighbors: 2
The current number of CDP neighbors: 0
LLDP neighbor information last changed time: 0 days, 0 hours, 4 minutes, 40 seconds
Transmit interval : 30s
Fast transmit interval : 1s
Transmit max credit : 5
Hold multiplier : 4
Reinit delay : 2s
Trap interval : 30s
Fast start times : 4
LLDP status information of port 1 [GigabitEthernet1/0/1]:
LLDP agent nearest-bridge:
Port status of LLDP : Enable
Admin status : Rx_Only
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 1
Number of MED neighbors : 1
Number of CDP neighbors : 0
Number of sent optional TLV : 21
Number of received unknown TLV : 0
LLDP agent nearest-nontpmr:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 1
Number of received unknown TLV : 0
LLDP agent nearest-customer:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 16
Number of received unknown TLV : 0
LLDP status information of port 2 [GigabitEthernet1/0/2]:
LLDP agent nearest-bridge:
Port status of LLDP : Enable
Admin status : Rx_Only
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 1
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 21
Number of received unknown TLV : 3
LLDP agent nearest-nontpmr:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 1
Number of received unknown TLV : 0
LLDP agent nearest-customer:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 16
Number of received unknown TLV :
由此可见，Device A的接口GigabitEthernet1/0/1上连接了一个MED邻居设备，GigabitEthernet1/0/2上则连接了一个非MED邻居设备，且这两个接口的LLDP工作模式都为Rx，即只接收而不发送LLDP报文。# 将Device A和Device B间的链路断掉后，再显示Device A上所有接口的LLDP状态信息。
[DeviceA] display lldp status
Global status of LLDP: Enable
The current number of LLDP neighbors: 1
The current number of CDP neighbors: 0
LLDP neighbor information last changed time: 0 days, 0 hours, 5 minutes, 20 seconds
Transmit interval : 30s
Fast transmit interval : 1s
Transmit max credit : 5
Hold multiplier : 4
Reinit delay : 2s
Trap interval : 30s
Fast start times : 4
LLDP status information of port 1 [GigabitEthernet1/0/1]:
LLDP agent nearest-bridge:
Port status of LLDP : Enable
Admin status : Rx_Only
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 1
Number of MED neighbors : 1
Number of CDP neighbors : 0
Number of sent optional TLV : 0
Number of received unknown TLV : 5
LLDP agent nearest-nontpmr:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 1
Number of received unknown TLV : 0
LLDP status information of port 2 [GigabitEthernet1/0/2]:
LLDP agent nearest-bridge:
Port status of LLDP : Enable
Admin status : Rx_Only
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 0
Number of received unknown TLV : 0
LLDP agent nearest-nontpmr:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 1
Number of received unknown TLV : 0
LLDP agent nearest-customer:
Port status of LLDP : Enable
Admin status : Disable
Trap flag : No
MED trap flag : No
Polling interval : 0s
Number of LLDP neighbors : 0
Number of MED neighbors : 0
Number of CDP neighbors : 0
Number of sent optional TLV : 16
Number of received unknown TLV :
