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Extensions to RSVP-TE for LSP Egress Local Protection

Extensions to RSVP-TE for LSP Egress Local Protection. draft-ietf-mpls-rsvp-egress-protection-01. Huaimo Chen, Zhenbin Li Ning So, Autumn Liu, Fengman Xu, Mehmet Toy Lu Huang, Lei Liu. Added details/explanations on Computing a backup path for protecting primary egress

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Extensions to RSVP-TE for LSP Egress Local Protection

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  1. Extensions to RSVP-TE for LSP Egress Local Protection draft-ietf-mpls-rsvp-egress-protection-01 Huaimo Chen, Zhenbin Li Ning So, Autumn Liu, Fengman Xu, Mehmet Toy Lu Huang, Lei Liu

  2. Added details/explanations on • Computing a backup path for protecting primary egress • Keeping primary LSP up after primary egress fails Changes to the previous version

  3. Upstream node of primary egress as PLR: • Computes a backup path for backup LSP to protect primary egress • obtains backup egress • excludes primary egress to be protected, thus • finds a path to backup egress without primary egress P2 PE7 CE4 PE1 P1 P5 CE1 P4 PE8 Computing Backup Path Upstream node as PLR P8 Primary LSP P7 P3 Primary Egress Backup LSP Backup Egress

  4. Upstream node of primary egress as PLR: • Keeps primary LSP up after primary egress fails • continues to send RESV message to its upstream node after primary egress fails. P2 PE7 CE4 PE1 P1 P5 CE1 P4 PE8 Keeping Primary LSP Up Upstream node as PLR P8 Primary LSP P7 P3 Primary Egress Backup LSP RESV Backup Egress

  5. Next Step • Welcome comments • WGLC

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