类似思科CDP的能看见邻居交换机。

1. 使能SwitchA的全局LLDP功能。
2. 在SwitchA上配置LLDP兼容CDP协议的功能，使得华为设备能够发现与之相连的其他厂商设备。
   操作步骤
   1、使能SwitchA的全局LLDP功能

[HUAWEI] **sysname SwitchA**
[SwitchA] **lldp enable**```
2、在SwitchA上配置LLDP兼容CDP协议的功能,在接口GigabitEthernet0/0/1上配置LLDP兼容CDP协议的功能。

```[SwitchA] **interface gigabitethernet 0/0/1**
[SwitchA-GigabitEthernet0/0/1] **lldp compliance cdp receive**
[SwitchA-GigabitEthernet0/0/1] **quit**
[SwitchA] **quit**```
3、验证配置结果
查看SwitchA的LLDP是否使能、CDP告警功能是否使能以及CDP告警的延迟时间是否为所配置的值。
>查看SwitchA的本地CDP信息。
```<SwitchA> **display cdp local**
·     System configuration
·     -------------------------------------------------------------------------- 
·     CDP Notification Interval          :5                    (default is 5s)              
·     CDP Notification Enable            :enabled              (default is enabled)      
·    
·     Remote Table Statistics:
·     --------------------------------------------------------------------------
·     Remote Table Last Change Time   :0 days, 23 hours, 21 minutes, 37 seconds
·    
·     Remote Neighbors Added             :0
·    
·     Remote Neighbors Deleted           :0
·    
·     Remote Neighbors Dropped           :0
·    
·     Remote Neighbors Aged              :0
·    
·     Total Neighbors                    :1
·    
·     Port information:
·     --------------------------------------------------------------------------  
·     Interface GigabitEthernet0/0/1:
·     CDP Status               :enabled             (default is disabled)            
·     Total Neighbors          :1 
  ---- More ---- ```

>查看SwitchA的邻居设备的CDP信息。

· <SwitchA> display cdp neighbor
· GigabitEthernet0/0/1 has 1 neighbor(s):
·
·
· Neighbor index :1
· Device ID :ME3400
· Port ID :GigabitEthernet0/4
· Version :Cisco IOS Software, ME340x Software (ME340x-METROIPACCESSK9-M),
· Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
· Technical Support: http://www.cisco.com/techsupport
· Copyright (c) 1986-2011 by Cisco Systems, Inc.
· Compiled Thu 05-May-11 17:37 by prod_rel_team
· Platform :cisco ME-3400EG-2CS-A
· MacAddress :b4a4-e3cf-e984
· Discovered time:0 days, 22 hours, 33 minutes, 36 seconds
· Expired time :122
---- More ---- ```