Example for Configuring CDP-Compatible LLDP

Networking Requirements

As shown in Figure 1, SwitchA (a Huawei device) connects to SwitchB (a non-Huawei device) through an unknown network. The NMS and the switches have reachable routes to each other, and SNMP is configured on devices and NMS.

A network administrator wants to obtain Layer 2 information about SwitchA and SwitchB to know details about network topology and configuration conflicts.

Figure 1 Configuring CDP-compatible LLDP

Configuration Roadmap

The configuration roadmap is as follows:

Enable global LLDP on SwitchA.
Enable CDP-compatible LLDP on SwitchA so that SwitchA can discover non-Huawei neighbors.

Procedure

Enable global LLDP on SwitchA.

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] lldp enable

Enable CDP-compatible LLDP on SwitchA.

# Enable CDP-compatible LLDP on GE0/0/1

[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] lldp compliance cdp receive
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] quit

Verify the configurations.

# View the configuration of CDP-compatible LLDP, CDP trap function, and the delay in sending CDP trap messages.

View local CDP information on SwitchA.

<SwitchA> display cdp local
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 ----

View neighbor CDP information on SwitchA.

<SwitchA> display cdp neighbor
GigabitEthernet0/0/1 has 1 neighbor(s):                                          
                                                                                
                                                                                
Neighbor index :1                                                               
Device ID                :ME3400                                                          
Port ID                  :GigabitEthernet0/4                                              
Version                  :SCCP75.8-3-3SR2S
Platform                 :cisco ME-3400EG-2CS-A
MacAddress               :b4a4-e3cf-e984                                                  
Discovered time          :0 days, 22 hours, 33 minutes, 36 seconds                        
Expired time             :122                                
Power drawn              :12000 mw 
Power request ID         :39308 
Power management ID      :2 
Power request levels     :12000 mw 0 mw
  ---- More ----

Configuration File

SwitchA configuration file

#
sysname SwitchA
#
lldp enable
#
interface GigabitEthernet0/0/1
 lldp compliance cdp receive
#
return