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NE40E V800R010C00 Configuration Guide - MPLS 01

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Checking the Configurations

Checking the Configurations

After configuring LDP-IGP synchronization on an interface, you can view the synchronization status of interfaces with LDP-IGP synchronization enabled.


LDP-IGP synchronization has been configured.


  • Run the display mpls ldp command to check the global LDP configuration.
  • Run the display isis [ process-id ] ldp-sync interface command to check synchronization status of interfaces configured with LDP-IS-IS synchronization.
  • Run the display ospf ldp-sync interface { all | interface-type interface-number } command to check synchronization status of interfaces configured with LDP-OSPF synchronization.


Run the display mpls ldp command to view the time of waiting for the establishment of the LSP after the LDP session is set up and the delay time for withdrawing the label assigned by an interface to its upstream interface after the LDP session becomes Down.

<HUAWEI> display mpls ldp
                           LDP Global Information
 Protocol Version        : V1            Neighbor Liveness     : 600 Sec
 Graceful Restart        : Off           FT Reconnect Timer    : 300 Sec
 MTU Signaling           : On            Recovery Timer        : 300 Sec
 Capability-Announcement : On            Longest-match         : Off
 mLDP P2MP Capability    : Off           mLDP MBB Capability   : Off
 mLDP MP2MP Capability   : Off           mLDP Recursive-fec    : Off

                          LDP Instance Information
 Instance ID             : 0             VPN-Instance          : 
 Instance Status         : Active        LSR ID                :
 Hop Count Limit         : 32            Path Vector Limit     : 32
 Loop Detection          : Off
 DU Re-advertise Timer   : 10 Sec        DU Re-advertise Flag  : Off
 DU Explicit Request     : Off           Request Retry Flag    : Off
 Label Distribution Mode : Ordered       
 Label Retention Mode    : Liberal(DU)/Conservative(DOD)
 Graceful-Delete         : Off           Graceful-Delete Timer : 5 Sec
 Igp-sync-delay Timer    : 10 Sec       
 Ipv6-family             : Off
 Local-Ipv6-transport-address   :  --

Run the display ospf ldp-sync interface { all | interface-type interface-number } command. The command output shows that the interface status is Sync-Achieved.

<HUAWEI> display ospf ldp-sync interface GigabitEthernet 1/0/0
 Interface GE1/0/0
  HoldDown Timer: 10        HoldMaxCost Timer: 50
 LDP State: Up             OSPF Sync State: Sync-Achieved

Run the display isis ldp-sync interface command, and you can find that the interface status becomes Sync-Achieved.

<HUAWEI> display isis ldp-sync interface
Ldp Sync interface information for ISIS(1)
Interface    HoldDownTimer    HoldMaxCostTimer   LDP State   Sync State
GE1/0/0      10               10                 Down        Init
Updated: 2018-07-12

Document ID: EDOC1100028530

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