Hi Himanshu, > > Thank you for the presentation of > draft-karboubi-spring-sidlist-optimized-cs-sr > <https://datatracker.ietf.org/doc/draft-karboubi-spring-sidlist-optimized-cs-sr/>. > If I understood your response to Ali correctly, the proposed mechanism is > expected to use more aggressive network failure detection than the link > layer. If that is correct, I have several questions about the multi-layer > OAM: > > - AFAIK link-layer failures are detected within 10 ms using a > connectivity check mechanism (CCM of Y.1731 or a single-hop BFD) with a 3.3 > ms interval. > - If the link failure is detectable within 10 ms, what detection time > for the path, i.e., E2E connection failure detection, is suggested? What > interval between test probes will be used in that case? > - Furthermore, even if the path converges around the link failure > before the local protection is deployed, the link failure will be detected, > and the protection mechanism will be deployed despite the Orchestrator > setting up its recovery path in the network. If that is correct, local > defect detection and protection are unnecessary overheads. Would you agree? > > > Regards, > > Greg >
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