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NE20E-S V800R010C10SPC500 Configuration Guide - MPLS 01

This is NE20E-S V800R010C10SPC500 Configuration Guide - MPLS
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Configuring IGP TE (OSPF or IS-IS)

Configuring IGP TE (OSPF or IS-IS)

After IGP TE is configured on all LSRs in an MPLS domain, a TEDB is generated on each LSR.

Context

Either OSPF TE or IS-IS TE can be used:

NOTE:

If neither OSPF TE nor IS-IS TE is configured, LSRs generate no TE link state advertisement (LSA) or TE Link State PDUs (LSPs) and construct no TEDBs.

TE tunnels cannot be used in inter-area scenarios. In an inter-area scenario, an explicit path can be configured, and the inbound and outbound interfaces of the explicit path must be specified, preventing a failure to establish a TE tunnel.

  • OSPF TE

    OSPF TE uses Opaque Type 10 LSAs to carry TE attributes. The OSPF Opaque capability must be enabled on each LSR. In addition, TE LSAs are generated only when at least one OSPF neighbor is in the Full state.

  • IS-IS TE

    IS-IS TE uses the sub-time-length-value (sub-TLV) in the IS-reachable TLV (22) to carry TE attributes. The IS-IS wide metric attribute must be configured. Its value can be narrow, wide, compatible, or wide-compatible.

Procedure

  • Configure OSPF TE.
    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 OSPF Opaque capability is enabled.

    4. Run area area-id

      The OSPF area view is displayed.

    5. Run mpls-te enable [ standard-complying ]

      TE is enabled in the OSPF area.

    6. Run commit

      The configurations are committed.

  • Configure IS-IS TE.
    1. Run system-view

      The system view is displayed.

    2. Run isis [ process-id ]

      The IS-IS view is displayed.

    3. Run cost-style { wide | compatible | wide-compatible }

      The IS-IS wide metric attribute is configured.

    4. Run traffic-eng [ level-1 | level-2 | level-1-2 ]

      IS-IS TE is enabled.

      If no level is specified when IS-IS TE is enabled, IS-IS TE is valid for both Level-1 and Level-2 routers.

    5. Run commit

      The configurations are committed.

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Updated: 2019-01-03

Document ID: EDOC1100055103

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