Configuring Basic SR-MPLS TE Functions

This section describes how to configure basic SR-MPLS TE functions.

Context

SR-MPLS TE uses strict and loose explicit paths. Strict explicit paths use adjacency SIDs, and loose explicit paths use adjacency and node SIDs. Before an SR-MPLS TE tunnel is configured, the adjacency and node SIDs must be configured.

Procedure

Configure an SRGB range.
1. Run system-view
  The system view is displayed.
2. Run ospf [ process-id ]
  The OSPF view is displayed.
3. Run opaque-capability enable
  The Opaque LSA capability is enabled.
4. Run segment-routing mpls
  The OSPF Segment Routing function is enabled.
5. Run segment-routing global-block begin-value end-value [ ignore-conflict ]
  An OSPF SRGB range is configured.
  
  If a label in the SRGB range to be specified is in use, you can select the ignore-conflict parameter to allow configuration delivery. However, the configuration does not take effect until the device is restarted and the label is released. In normal cases, specifying ignore-conflict is not recommended.
6. Run area area-id
  The OSPF area view is displayed.
7. Run mpls-te enable [ standard-complying ]
  TE is enabled in the OSPF area.
8. Run commit
  The configuration is committed.
9. Run quit
  Return to the system view.
Set an SR prefix SID.
1. Run interface loopback loopback-number
  A loopback interface is created, and the loopback interface view is displayed.
2. Run ospf enable [ process-id ] area area-id
  OSPF is enabled on the interface.
3. Run ip address ip-address { mask | mask-length }
  The IP address is configured for the loopback interface.
4. Run ospf prefix-sid { absolute sid-value | index index-value } [ node-disable ]
  An SR prefix SID is configured for the IP address of the interface.
5. Run commit
  The configuration is committed.