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AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010 CLI-based Configuration Guide - MPLS

This document describes MPLS features on the device and provides configuration procedures and configuration examples.

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Example for Setting Attributes for an MPLS TE Tunnel

Example for Setting Attributes for an MPLS TE Tunnel

Networking Requirements

As shown in Figure 4-49, LSRA has two dynamic MPLS TE tunnels to LSRD: Tunnel0/0/1 and Tunnel0/0/2. The affinity attribute and mask need to be used according to the administrative group attribute so that Tunnel0/0/1 on LSRA uses the physical link LSRB -> LSRC and Tunnel0/0/2 uses the physical link LSRB -> LSRE.

Figure 4-49  Networking for setting MPLS TE tunnel attributes

Configuration Roadmap

The configuration roadmap is as follows:

  1. Assign an IP address to each interface and configure OSPF to ensure that there are reachable routes between LSRs.

  2. Configure an ID for each LSR and globally enable MPLS TE, RSVP-TE, CSPF on each node and interface, and enable OSPF TE.

  3. Configure the administrative group attribute of the outbound interface of the tunnel on each LSR.

  4. On the ingress node of the primary tunnel, create a tunnel interface, and specify the IP address, tunneling protocol, destination IP address, tunnel ID, and dynamic signaling protocol RSVP-TE for the tunnel interface.

  5. Determine and configure the affinity attribute and mask for each tunnel according to the administrative group attribute and networking requirements.

Procedure

  1. Assign an IP address to each interface and configure OSPF.

    # Configure LSRA. The configurations of LSRB, LSRC, LSRD, and LSRE are similar to the configuration of LSRA, and are not mentioned here. 

    <Huawei> system-view
[Huawei] sysname LSRA
[LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] ip address 172.1.1.1 255.255.255.0
[LSRA-GigabitEthernet1/0/0] quit
[LSRA] interface loopback 1
[LSRA-LoopBack1] ip address 1.1.1.9 255.255.255.255
[LSRA-LoopBack1] quit
[LSRA] ospf 1
[LSRA-ospf-1] area 0
[LSRA-ospf-1-area-0.0.0.0] network 1.1.1.9 0.0.0.0
[LSRA-ospf-1-area-0.0.0.0] network 172.1.1.0 0.0.0.255
[LSRA-ospf-1-area-0.0.0.0] quit
[LSRA-ospf-1] quit

    After the configurations are complete, run the display ip routing-table command on each LSR. You can see that the LSRs have learned the routes to Loopback1 interfaces of each other. The display on LSRA is used as an example.

    [LSRA] display ip routing-table
Route Flags:
R - relay, D - download to fib                                     
------------------------------------------------------------------------------  
Routing Tables: Public                                                          
         Destinations : 16       Routes : 16                                    
                                                                                
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface      
                                                                                
        1.1.1.9/32  Direct  0    0           D   127.0.0.1       LoopBack1      
        2.2.2.9/32  OSPF    10   1           D   172.1.1.2       GigabitEthernet1/0/0
        3.3.3.9/32  OSPF    10   2           D   172.1.1.2       GigabitEthernet1/0/0
        4.4.4.9/32  OSPF    10   3           D   172.1.1.2       GigabitEthernet1/0/0
        5.5.5.9/32  OSPF    10   2           D   172.1.1.2       GigabitEthernet1/0/0
      127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0    
      127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0    
127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0    
      172.1.1.0/24  Direct  0    0           D   172.1.1.1       GigabitEthernet1/0/0
      172.1.1.1/32  Direct  0    0           D   127.0.0.1       GigabitEthernet1/0/0
    172.1.1.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet1/0/0
      172.2.1.0/24  OSPF    10   2           D   172.1.1.2       GigabitEthernet1/0/0
      172.3.1.0/24  OSPF    10   3           D   172.1.1.2       GigabitEthernet1/0/0
      172.4.1.0/24  OSPF    10   2           D   172.1.1.2       GigabitEthernet1/0/0
      172.5.1.0/24  OSPF    10   3           D   172.1.1.2       GigabitEthernet1/0/0
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

  2. Configure basic MPLS functions and enable MPLS TE, RSVP-TE, and CSPF.

    # Configure LSRA. The configurations of LSRB, LSRC, LSRD, and LSRE are similar to the configuration of LSRA, and are not mentioned here. CSPF only needs to be configured on the ingress node of the primary tunnel.

    [LSRA] mpls lsr-id 1.1.1.9
[LSRA] mpls
[LSRA-mpls] mpls te
[LSRA-mpls] mpls rsvp-te
[LSRA-mpls] mpls te cspf
[LSRA-mpls] quit
[LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] mpls
[LSRA-GigabitEthernet1/0/0] mpls te
[LSRA-GigabitEthernet1/0/0] mpls rsvp-te
[LSRA-GigabitEthernet1/0/0] quit

  3. Configure OSPF TE.

    # Configure LSRA. The configurations of LSRB, LSRC, LSRD, and LSRE are similar to the configuration of LSRA, and are not mentioned here. 

    [LSRA] ospf
[LSRA-ospf-1] opaque-capability enable
[LSRA-ospf-1] area 0
[LSRA-ospf-1-area-0.0.0.0] mpls-te enable
[LSRA-ospf-1-area-0.0.0.0] quit
[LSRA-ospf-1] quit

  4. Set MPLS TE attributes of the outbound interface of each node.

    # Configure the administrative group attribute on LSRA.

    [LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] mpls te link administrative group 10001
[LSRA-GigabitEthernet1/0/0] quit

    # Configure the administrative group attribute on LSRB.

    [LSRB] interface gigabitethernet 2/0/0
[LSRB-GigabitEthernet2/0/0] mpls te link administrative group 10101
[LSRB-GigabitEthernet2/0/0] quit
[LSRB] interface gigabitethernet 3/0/0
[LSRB-GigabitEthernet3/0/0] mpls te link administrative group 10011
[LSRB-GigabitEthernet3/0/0] quit

    # Configure the administrative group attribute on LSRC.

    [LSRC] interface gigabitethernet 2/0/0
[LSRC-GigabitEthernet2/0/0] mpls te link administrative group 10001
[LSRC-GigabitEthernet2/0/0] quit

    # Configure the administrative group attribute on LSRE.

    [LSRE] interface gigabitethernet 2/0/0
[LSRE-GigabitEthernet2/0/0] mpls te link administrative group 10011
[LSRE-GigabitEthernet2/0/0] quit

    After the configurations are complete, check the TEDB including the Color field of each link. The Color field indicates the administrative group attribute. The display on LSRA is used as an example.

    [LSRA] display mpls te cspf tedb node
 Router ID: 1.1.1.9                                                             
 IGP Type: OSPF      Process ID: 1                                              
  MPLS-TE Link Count: 1                                                         
  Link[1]:                                                                      
    OSPF Router ID: 1.1.1.9                Opaque LSA ID: 1.0.0.1               
    Interface IP Address: 172.1.1.1                                             
    DR Address: 172.1.1.2                                                       
    IGP Area: 0                                                                 
    Link  Type: Multi-access  Link Status: Active                               
    IGP Metric: 1               TE Metric: 1           Color: 0x10001           
...

  5. Create MPLS TE tunnels on the ingress node.

    # Create Tunnel0/0/1 on LSRA.

    [LSRA] interface tunnel 0/0/1
[LSRA-Tunnel0/0/1] ip address unnumbered interface loopback 1
[LSRA-Tunnel0/0/1] tunnel-protocol mpls te
[LSRA-Tunnel0/0/1] destination 4.4.4.9
[LSRA-Tunnel0/0/1] mpls te tunnel-id 100
[LSRA-Tunnel0/0/1] mpls te record-route label
[LSRA-Tunnel0/0/1] mpls te affinity property 10101 mask 11011
[LSRA-Tunnel0/0/1] mpls te commit
[LSRA-Tunnel0/0/1] quit

    # Create Tunnel0/0/2 on LSRA.

    [LSRA] interface tunnel 0/0/2
[LSRA-Tunnel0/0/2] ip address unnumbered interface loopback 1
[LSRA-Tunnel0/0/2] tunnel-protocol mpls te
[LSRA-Tunnel0/0/2] destination 4.4.4.9
[LSRA-Tunnel0/0/2] mpls te tunnel-id 101
[LSRA-Tunnel0/0/2] mpls te record-route label
[LSRA-Tunnel0/0/2] mpls te affinity property 10011 mask 11101
[LSRA-Tunnel0/0/2] mpls te commit
[LSRA-Tunnel0/0/2] quit

  6. Verify the configuration.

    # After the configurations are complete, run the display mpls te tunnel-interface command to view the tunnel status on LSRA. You can see that both Tunnel0/0/1 and Tunnel0/0/2 are Up.

    [LSRA] display mpls te tunnel-interface
    ----------------------------------------------------------------            
                               Tunnel0/0/1                                      
    ----------------------------------------------------------------            
    Tunnel State Desc   :  UP                                                   
    Active LSP          :  Primary LSP                                          
    Session ID          :  100                                                  
    Ingress LSR ID      :  1.1.1.9          Egress LSR ID:  4.4.4.9             
    Admin State         :  UP               Oper State   :  UP                  
    Primary LSP State      : UP                                                 
      Main LSP State       : READY               LSP ID  : 47                   
                                                                                
    ----------------------------------------------------------------            
                               Tunnel0/0/2                                      
    ----------------------------------------------------------------            
    Tunnel State Desc   :  UP                                                   
    Active LSP          :  Primary LSP                                          
    Session ID          :  101                                                  
    Ingress LSR ID      :  1.1.1.9          Egress LSR ID:  4.4.4.9             
    Admin State         :  UP               Oper State   :  UP                  
    Primary LSP State      : UP                                                 
      Main LSP State       : READY               LSP ID  : 4

    # Run the display mpls te tunnel path command to view the path of the tunnel. You can see that the affinity attribute and mask of the tunnel match the administrative group attribute of each link.

    [LSRA] display mpls te tunnel path
 Tunnel Interface Name : Tunnel0/0/1                                            
 Lsp ID : 1.1.1.9 :100 :47                                                      
 Hop Information                                                                
  Hop 0   172.1.1.1                                                             
  Hop 1   172.1.1.2  Label 1065                                                 
  Hop 2   2.2.2.9  Label 1065                                                   
  Hop 3   172.2.1.1                                                             
  Hop 4   172.2.1.2  Label 1075                                                 
  Hop 5   3.3.3.9  Label 1075                                                   
  Hop 6   172.3.1.1                                                             
  Hop 7   172.3.1.2  Label 3                                                    
  Hop 8   4.4.4.9  Label 3                                                      
                                                                                
 Tunnel Interface Name : Tunnel0/0/2                                            
 Lsp ID : 1.1.1.9 :101 :4                                                       
 Hop Information                                                                
  Hop 0   172.1.1.1                                                             
  Hop 1   172.1.1.2  Label 1067                                                 
  Hop 2   2.2.2.9  Label 1067                                                   
  Hop 3   172.4.1.1                                                             
  Hop 4   172.4.1.2  Label 1040                                                 
  Hop 5   5.5.5.9  Label 1040                                                   
  Hop 6   172.5.1.1                                                             
  Hop 7   172.5.1.2  Label 1077                                                 
  Hop 8   3.3.3.9  Label 1077                                                   
  Hop 9   172.3.1.1                                                             
  Hop 10   172.3.1.2  Label 3                                                   
  Hop 11   4.4.4.9  Label 3

Configuration Files

  • LSRA configuration file

    #
 sysname LSRA
#
mpls lsr-id 1.1.1.9                                                             
mpls                                                                            
 mpls te                                                                        
 mpls rsvp-te                                                                   
 mpls te cspf 
#
interface GigabitEthernet1/0/0
 ip address 172.1.1.1 255.255.255.0
 mpls
 mpls te
 mpls te link administrative group 10001
 mpls rsvp-te
#
interface LoopBack1
 ip address 1.1.1.9 255.255.255.255
#
interface Tunnel0/0/1                                                           
 ip address unnumbered interface LoopBack1                                      
 tunnel-protocol mpls te                                                        
 destination 4.4.4.9                                                            
 mpls te tunnel-id 100                                                          
 mpls te record-route label                                                     
 mpls te affinity property 10101 mask 11011                                     
 mpls te commit                                                                 
#                                                                               
interface Tunnel0/0/2                                                           
 ip address unnumbered interface LoopBack1                                      
 tunnel-protocol mpls te                                                        
 destination 4.4.4.9                                                            
 mpls te tunnel-id 101                                                          
 mpls te record-route label                                                     
 mpls te affinity property 10011 mask 11101                                     
 mpls te commit                                                                 
#                                                                               
ospf 1                                                                          
 opaque-capability enable                                                       
 area 0.0.0.0                                                                   
  network 1.1.1.9 0.0.0.0                                                       
  network 172.1.1.0 0.0.0.255                                                   
  mpls-te enable 
#
return

  • LSRB configuration file

    #
 sysname LSRB
# 
mpls lsr-id 2.2.2.9
mpls
 mpls te
 mpls rsvp-te
#
interface GigabitEthernet1/0/0
 ip address 172.1.1.2 255.255.255.0
 mpls
 mpls te
 mpls rsvp-te
# 
interface GigabitEthernet2/0/0
 ip address 172.2.1.1 255.255.255.0
 mpls
 mpls te
 mpls te link administrative group 10101
 mpls rsvp-te
#
interface GigabitEthernet3/0/0
 ip address 172.4.1.1 255.255.255.0
 mpls
 mpls te
 mpls te link administrative group 10011
 mpls rsvp-te
#
interface LoopBack1
 ip address 2.2.2.9 255.255.255.255
# 
ospf 1
 opaque-capability enable
 area 0.0.0.0
  network 2.2.2.9 0.0.0.0                                                       
  network 172.1.1.0 0.0.0.255                                                   
  network 172.2.1.0 0.0.0.255                                                   
  network 172.4.1.0 0.0.0.255 
  mpls-te enable
#
return

  • LSRC configuration file

    #
 sysname LSRC
#
mpls lsr-id 3.3.3.9
mpls
 mpls te
 mpls rsvp-te
#
interface GigabitEthernet1/0/0
 ip address 172.2.1.2 255.255.255.0
 mpls
 mpls te 
 mpls rsvp-te
#
interface GigabitEthernet2/0/0
 ip address 172.3.1.1 255.255.255.0
 mpls
 mpls te
 mpls te link administrative group 10001
 mpls rsvp-te
#
interface GigabitEthernet3/0/0
 ip address 172.5.1.2 255.255.255.0
 mpls
 mpls te
 mpls rsvp-te
#
interface LoopBack1
 ip address 3.3.3.9 255.255.255.255
#
ospf 1
 opaque-capability enable
 area 0.0.0.0
  network 3.3.3.9 0.0.0.0                                                       
  network 172.2.1.0 0.0.0.255                                                   
  network 172.3.1.0 0.0.0.255                                                   
  network 172.5.1.0 0.0.0.255                                                   
  mpls-te enable
#
return

  • LSRD configuration file

    #
 sysname LSRD
#
mpls lsr-id 4.4.4.9                                                             
mpls                                                                            
 mpls te                                                                        
 mpls rsvp-te
#
interface GigabitEthernet1/0/0
 ip address 172.3.1.2 255.255.255.0
 mpls
 mpls te
 mpls rsvp-te
#
interface LoopBack1
 ip address 4.4.4.9 255.255.255.255
#
ospf 1
 opaque-capability enable
 area 0.0.0.0
  network 4.4.4.9 0.0.0.0                                                       
  network 172.3.1.0 0.0.0.255
  mpls-te enable
#
return

  • LSRE configuration file

    #
 sysname LSRE
#
mpls lsr-id 5.5.5.9
mpls
 mpls te
 mpls rsvp-te
#
interface GigabitEthernet1/0/0
 ip address 172.4.1.2 255.255.255.0
 mpls
 mpls te
 mpls rsvp-te
#
interface GigabitEthernet2/0/0
 ip address 172.5.1.1 255.255.255.0
 mpls
 mpls te
 mpls te link administrative group 10011
 mpls rsvp-te
#
interface LoopBack1
 ip address 5.5.5.9 255.255.255.255
#
ospf 1
 opaque-capability enable
 area 0.0.0.0
  network 5.5.5.9 0.0.0.0                                                       
  network 172.4.1.0 0.0.0.255                                                   
  network 172.5.1.0 0.0.0.255
  mpls-te enable
#
return
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Updated: 2023-08-07

Document ID: EDOC1100034073

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