Example for Configuring VLAN-based Ethernet CFM on a Layer 2 Network

Networking Requirements

As shown in Figure 1, VLANs are configured between devices. UPE2 and UPE3 back up each other. It is required that connectivity of links between UPE1 and UPE2 and between UPE2 and PEAGG be detected in real time.

Figure 1 Networking for configuring VLAN-based Ethernet CFM on a Layer 2 network

Configuration Roadmap

The configuration roadmap is as follows:

Configure VLANs for UPE1, UPE2, UPE3, and PEAGG to implement Layer 2 connectivity.
Configure basic CFM functions on UPE1 and PEAGG to detect connectivity of the link between UPE1 and PEAGG.

Procedure

Configure VLANs.

# Configure UPE1.

<HUAWEI> system-view
[HUAWEI] sysname UPE1
[UPE1] vlan 2
[UPE1-vlan2] quit
[UPE1] interface gigabitethernet 0/0/1
[UPE1-GigabitEthernet0/0/1] port link-type trunk
[UPE1-GigabitEthernet0/0/1] port trunk allow-pass vlan 2
[UPE1-GigabitEthernet0/0/1] quit
[UPE1] interface gigabitethernet 0/0/2
[UPE1-GigabitEthernet0/0/2] port link-type trunk
[UPE1-GigabitEthernet0/0/2] port trunk allow-pass vlan 2
[UPE1-GigabitEthernet0/0/2] quit

# Configure UPE2.

<HUAWEI> system-view
[HUAWEI] sysname UPE2
[UPE2] vlan 2
[UPE2-vlan2] quit
[UPE2] interface gigabitethernet 0/0/1
[UPE2-GigabitEthernet0/0/1] port link-type trunk
[UPE2-GigabitEthernet0/0/1] port trunk allow-pass vlan 2
[UPE2-GigabitEthernet0/0/1] quit
[UPE2] interface gigabitethernet 0/0/2
[UPE2-GigabitEthernet0/0/2] port link-type trunk
[UPE2-GigabitEthernet0/0/2] port trunk allow-pass vlan 2
[UPE2-GigabitEthernet0/0/2] quit

# Configure UPE3.

<HUAWEI> system-view
[HUAWEI] sysname UPE3
[UPE3] vlan 2
[UPE3-vlan2] quit
[UPE3] interface gigabitethernet 0/0/1
[UPE3-GigabitEthernet0/0/1] port link-type trunk
[UPE3-GigabitEthernet0/0/1] port trunk allow-pass vlan 2
[UPE3-GigabitEthernet0/0/1] quit
[UPE3] interface gigabitethernet 0/0/2
[UPE3-GigabitEthernet0/0/2] port link-type trunk
[UPE3-GigabitEthernet0/0/2] port trunk allow-pass vlan 2
[UPE3-GigabitEthernet0/0/2] quit

# Configure the PEAGG.

<HUAWEI> system-view
[HUAWEI] sysname PEAGG
[PEAGG] vlan 2
[PEAGG-vlan2] quit
[PEAGG] interface gigabitethernet 0/0/1
[PEAGG-GigabitEthernet0/0/1] port link-type trunk
[PEAGG-GigabitEthernet0/0/1] port trunk allow-pass vlan 2
[PEAGG-GigabitEthernet0/0/1] quit
[PEAGG] interface gigabitethernet 0/0/2
[PEAGG-GigabitEthernet0/0/2] port link-type trunk
[PEAGG-GigabitEthernet0/0/2] port trunk allow-pass vlan 2
[PEAGG-GigabitEthernet0/0/2] quit

Configure basic CFM functions.

# Configure basic CFM functions on UPE1.

[UPE1] cfm version standard
[UPE1] cfm enable
[UPE1] cfm md md
[UPE1-md-md] ma ma
[UPE1-md-md-ma-ma] map vlan 2
[UPE1-md-md-ma-ma] mep mep-id 1 interface gigabitethernet 0/0/2 outward
[UPE1-md-md-ma-ma] mep ccm-send mep-id 1 enable
[UPE1-md-md-ma-ma] remote-mep mep-id 2
[UPE1-md-md-ma-ma] remote-mep ccm-receive mep-id 2 enable
[UPE1-md-md-ma-ma] quit
[UPE1-md-md] quit

# Configure basic CFM functions on the PEAGG.

[PEAGG] cfm version standard
[PEAGG] cfm enable
[PEAGG] cfm md md
[PEAGG-md-md] ma ma
[PEAGG-md-md-ma-ma] map vlan 2
[PEAGG-md-md-ma-ma] mep mep-id 2 interface gigabitethernet 0/0/2 outward
[PEAGG-md-md-ma-ma] mep ccm-send mep-id 2 enable
[PEAGG-md-md-ma-ma] remote-mep mep-id 1
[PEAGG-md-md-ma-ma] remote-mep ccm-receive mep-id 1 enable
[PEAGG-md-md-ma-ma] quit
[PEAGG-md-md] quit

After the configuration is complete, run the display cfm remote-mep command on UPE1 and PEAGG. You can view MEP information.

[UPE1] display cfm remote-mep
The total number of RMEPs is : 1
The status of RMEPs : 1 up, 0 down, 0 disable
--------------------------------------------------
 MD Name            : md
 Level              : 0
 MA Name            : ma
 RMEP ID            : 2
 VLAN ID            : 2
 VSI Name           : --
 L2VC ID            : --
 MAC                : 00e0-0003-0003
 CCM Receive        : enabled
 Trigger-If-Down    : disabled
 CFM Status         : up
 Alarm Status       : none  Interface TLV      : --                                                          Connect Status     : up

Configuration Files

UPE1 configuration file

#                                                                               
sysname UPE1                                                               
#                                                                               
vlan batch 2                                                                    
#                                                                               
cfm enable                                                                      
#                                                                               
interface GigabitEthernet0/0/1                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
interface GigabitEthernet0/0/2                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
cfm md md                                                                      
 ma ma                                                                         
  map vlan 2                                                                    
  mep mep-id 1 interface GigabitEthernet0/0/2 outward                           
  mep ccm-send mep-id 1 enable                                                  
  remote-mep mep-id 2                                                           
  remote-mep ccm-receive mep-id 2 enable                                        
#
return

UPE2 configuration file

#                                                                               
sysname UPE2                                                                    
#                                                                               
vlan batch 2                                                                    
#                                                                               
interface GigabitEthernet0/0/1                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
interface GigabitEthernet0/0/2                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
return

UPE3 configuration file

#                                                                               
sysname UPE3                                                                    
#                                                                               
vlan batch 2                                                                    
#
interface GigabitEthernet0/0/1                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
interface GigabitEthernet0/0/2                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
return

PEAGG configuration file

#                                                                               
sysname PEAGG                                                               
#                                                                               
vlan batch 2                                                                    
#
cfm enable                                                                      
#                                                                               
interface GigabitEthernet0/0/1                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                              
interface GigabitEthernet0/0/2                                                  
 port link-type trunk                                                           
 port trunk allow-pass vlan 2                                                   
#                                                                               
cfm md md                                                                      
 ma ma                                                                         
  map vlan 2                                                                    
  mep mep-id 2 interface GigabitEthernet0/0/2 outward                           
  mep ccm-send mep-id 2 enable                                                  
  remote-mep mep-id 1                                                           
  remote-mep ccm-receive mep-id 1 enable                                        
#
return