Abstract
This disclosure describes a proactive traffic engineering recovery mechanism for Resource Reservation Protocol - Traffic Engineering (RSVP-TE) tunnels based on physical-layer link degradation indicators, such as cyclic redundancy check (CRC) errors. Existing RSVP-TE and transport control-plane mechanisms generally react only after hard failures, such as link-down events, loss of signal, Bidirectional Forwarding Detection (BFD) timeout, or RSVP signaling timeout. However, high-speed optical and packet networks may experience soft failures in which a link remains operationally up while packet corruption or error rates increase due to fiber degradation, dirty connectors, optic issues, or other physical-layer impairments. In such cases, traffic continues to use the degraded link, resulting in packet loss and application degradation before conventional protection mechanisms are triggered.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Garg, Abhishek; Thapar, Jaiesh; and Anand, Rajeev, "CRC-Based Dynamic TE Metric Adjustment and Recovery Mechanism for RSVP-TE tunnels", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/11129