The VC of a Martini VLL Connection Cannot Go Up

Procedure

1. Check whether the two ends use the same encapsulation type and MTU value.

   Run the display mpls l2vc vc-id command to check VC information.

   <HUAWEI> display mpls l2vc 102
    Total LDP VC : 1     0 up       1 down                      
                                                                
    *client interface       : Vlanif10 is up                     
     Administrator PW       : no                                 
     session state          : down                              
     AC status              : up                                
     Ignore AC state        : disable
     VC state               : down                              
     Label state            : 0                                 
     Token state            : 0                                
     VC ID                  : 102                              
     VC type                : VLAN                         
     destination            : 2.2.2.2                       
     local VC label         : 1032         remote VC label      : 0  
     control word           : disable                 
     remote control word    : none                   
     forwarding entry       : not exist               
     local group ID         : 0                      
     remote group ID        : 0                     
     local AC OAM State     : up                     
     local PSN OAM State    : up                    
     local forwarding state : not forwarding       
     local status code      : 0x1                  
     BFD for PW             : unavailable          
     VCCV State             : up                   
     manual fault           : not set              
     active state           : inactive             
     link state             : down           
     local VC MTU           : 1500         remote VC MTU        : 0 
     local VCCV             : alert ttl lsp-ping bfd  
     remote VCCV            : none                    
     tunnel policy name     : --                      
     PW template name       : --                      
     primary or secondary   : primary 
   .....
   

   If the two PEs use different encapsulation types or MTU values, configure the same type of AC interfaces on the PEs and run the mpls mtu command to set the same MTU value on the PEs.

   If the two PEs use the same encapsulation type and MTU but the fault persists, go to step 2.

   

   A VC can go Up only when both ends use the same encapsulation type and MTU value.

2. Check whether VC IDs on the two PEs are the same.

   <HUAWEI> display mpls l2vc 102
    Total LDP VC : 1     0 up       1 down            
                                                     
    *client interface       : Vlanif10 is up         
     Administrator PW       : no                     
     session state          : up                     
     AC status              : up                     
     Ignore AC state        : disable
     VC state               : down                   
     Label state            : 0                     
     Token state            : 0                     
     VC ID                  : 102           
     VC type                : VLAN                  
   .....
   

   If the VC IDs are different, run the undo mpls l2vc command on one end to delete the existing VC ID, and then run the mpls l2vc command to set the VC ID to the same as that on the other end.

   If the two ends use the same VC ID but the fault persists, go to step 3.

   

   A VC can go Up only when both ends use the same VC ID.

3. Check whether the control words on the two PEs are the same.

   <HUAWEI> display mpls l2vc 102
    Total LDP VC : 1     0 up       1 down      
                                                
    *client interface       : Vlanif10 is up   
     Administrator PW       : no               
     session state          : up              
     AC status              : up              
     Ignore AC state        : disable
     VC state               : down            
     Label state            : 0               
     Token state            : 0               
     VC ID                  : 102             
     VC type                : VLAN            
     destination            : 2.2.2.2        
     local VC label         : 1032         remote VC label      : 1500  
     control word           : disable      
     remote control word    : none      
     forwarding entry       : not exist   
     local group ID         : 0           
     remote group ID        : 0           
     local AC OAM State     : up          
     local PSN OAM State    : up             
     local forwarding state : not forwarding 
     local status code      : 0x1            
     BFD for PW             : unavailable    
     VCCV State             : up             
     manual fault           : not set        
     active state           : inactive       
     link state             : down           
     local VC MTU           : 1500         remote VC MTU        : 0  
     local VCCV             : alert ttl lsp-ping bfd      
     remote VCCV            : none                       
     tunnel policy name     : --                     
     PW template name       : --                   
     primary or secondary   : primary 
   .....
   

   A VC can go Up only when both ends use the same control word. If the control words on two ends are different, run the undo mpls l2vc command to delete a VC connection on one end and then run the mpls l2vc command to create a VC connection and configure the same control word for two ends.