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NE40E V800R010C00 Configuration Guide - MPLS 01

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(Optional) Configuring a P2P TE Tunnel Template

(Optional) Configuring a P2P TE Tunnel Template

A P2P TE tunnel template can be configured, and MPLS TE tunnel attributes can be set in the template.

Usage Scenario

Before you create P2P TE tunnels in a batch, create a P2P TE tunnel template and configure parameters, such as bandwidth and a path limit, in the template. The mpls te auto-primary-tunnel command can then be run to reference this template. The device automatically uses the parameters configured in the P2P TE tunnel template to create P2P TE tunnels in a batch.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    mpls te p2p-template template-name

    A P2P TE tunnel template is created, and the P2P TE tunnel template view is displayed.

  3. Select one or multiple operations.

    Table 3-2  Operations

    Operation

    Description

    Run the bandwidth ct0 bw-value command to configure the CT0 bandwidth for MPLS TE tunnels.

    Before bandwidth protection is provided for traffic transmitted along a P2P TE tunnel, run the bandwidth command to set the CT0 bandwidth for the tunnel. Nodes on the P2P TE tunnel can then reserve bandwidth for services, which implements bandwidth protection.

    Run the record-route [ label ] command to enable the route and label record for MPLS TE tunnels.

    This step enables nodes along a P2P TE tunnel to use RSVP messages to record detailed P2P TE tunnel information, including the IP address of each hop. The label parameter in the record-route command enables RSVP messages to record label values.

    Run the resv-style { se | ff } command to specify the resource reservation style for MPLS TE tunnels.

    -

    Run the path metric-type { igp | te } command to specify the link metric type for MPLS TE tunnels.

    -

    Run the affinity property properties [ mask mask-value ] command to configure an affinity constraint for MPLS TE tunnels.

    An affinity is a 32-bit vector value used to describe an MPLS link. An affinity and an administrative group attribute define the nodes through which an MPLS TE tunnel passes. Affinity masks determine the link properties that should be checked by a device. If some bits in the mask are 1, at least one bit in an administrative group is 1, and the corresponding bit in the affinity must be 1. If the bits in the affinity are 0s, the corresponding bits in the administrative group cannot be 1.

    You can use an affinity to control the nodes through which a P2P TE tunnel passes.

    Run the affinity primary { include-all | include-any | exclude } bit-name &<1-32> command to configure an affinity for an MPLS TE tunnel.

    Before this command is run, run the path-constraint affinity-mapping command in the system view to create an affinity name template. In addition, run the attribute affinity-name bit-sequence bit-number command to configure the mappings between affinity bit values and names in the template view.

    Run the hop-limit hop-limit-value command to set the maximum number of hops on an MPLS TE tunnel.

    Run this command to set the maximum number of hops that each CR-LSP in an MPLS TE tunnel supports.

    Run the tie-breaking { least-fill | most-fill | random } command to configure a rule for selecting a route among multiple routes to the same destination.

    -

    Run the priority setup-priority [ hold-priority ] command to set the setup and holding priority values for MPLS TE tunnels.

    The setup priority of a tunnel must be no higher than its holding priority. To be specific, a setup priority value must be greater than or equal to a holding priority value.

    If resources are insufficient, setting the setup and holding priority values helps a device release LSPs with lower priorities and use the released resources to establish LSPs with higher priorities.

    Run the reoptimization [ frequency interval ] command to enable the periodic re-optimization for MPLS TE tunnels.

    Periodic re-optimization allows an MPLS TE tunnel to be automatically reestablished over a path with a lower cost. After a path with a lower cost to the same destination has been calculated for a specific reason, such as a cost change, a TE tunnel will be automatically reestablished, optimizing resources on a network.

    Run the bfd enable command to enable BFD for CR-LSP. To rapidly detect LSP faults and improve network reliability, configuring BFD for CR-LSP is recommended.
    Run the bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier } * command to configure BFD for CR-LSP parameters. BFD parameters can be set to control BFD detection sensitivity.
    Run the fast-reroute [ bandwidth ] command to enable TE FRR. TE FRR is recommended for primary MPLS TE tunnels, which improves network reliability.

    Run the bypass-attributes { bandwidth bandwidth | priority setup-priority [ hold-priority ] } * command to configure bypass tunnel attributes.

    A bypass tunnel is established using the configured bypass tunnel attributes. The bypass tunnel bandwidth cannot exceed the primary tunnel bandwidth. The setup priority of a bypass tunnel must be lower than or equal to the holding priority. Both of them must be lower than or equal to those of the primary tunnel.

    Run the lsp-tp outbound command to enable traffic policing for MPLS TE tunnels.

    Physical links over which a TE tunnel is established may also transmit traffic of other TE tunnels, non-CR-LSP traffic, or even IP traffic, in addition to the TE tunnel traffic. To limit TE traffic within a configured bandwidth range, enable traffic policing for a specific MPLS TE tunnel.

  4. Run:

    commit

    The configuration is committed.

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Updated: 2018-07-12

Document ID: EDOC1100028530

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