Dear authors, Speaking as a network operator, I welcome the effort in IPFIX to improve the drop cause declaration better.
As described, IE89 forwardingStatus covers the following categories forwarded dropped consumed I understood that the motivation of the draft is to increase the amount of code points for dropped from 6-bit (according to IANA, 16 code points currently used) to 32-bit and support the enterprise. >From my perspective, it makes sense to support an enterprise bit for forwarded dropped consumed However, I miss a clear reason of the increase of size. I would appreciate if you could describe more drop causes which qualifies for the increase to 32-bit. I would also to consider to include the existing code points from IE89 in forwardingExceptionCode as well to support a migration path. So a device does not need to export both. Further please clarify the need of forwardingNexthopId over existing entities IE15 ipNextHopIPv4Address IE18 bgpNextHopIPv4Address IE62 ipNextHopIPv6Address IE63 bgpNextHopIPv6Address IE47 mplsTopLabelIPv4Address Best wishes Thomas From: OPSAWG <[email protected]> On Behalf Of Venkata Chaitanya Munukutla Sent: Monday, February 22, 2021 9:38 PM To: [email protected] Subject: [OPSAWG] Requesting review & feedback - draft-mvmd-opsawg-ipfix-fwd-exceptions-02 WG, We recently published a new version of the draft ( https://tools.ietf.org/html/draft-mvmd-opsawg-ipfix-fwd-exceptions-02<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Fdraft-mvmd-opsawg-ipfix-fwd-exceptions-02&data=04%7C01%7CThomas.Graf%40swisscom.com%7Ca4f03da8f61048936eca08d8d771d4fc%7C364e5b87c1c7420d9beec35d19b557a1%7C1%7C0%7C637496231201225710%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=qL61o9f4Px%2FeA1ffRXX1zwALEIlID6WDSy%2BlE2niDSY%3D&reserved=0> ) based on review comments & feedback from IETF 109. Please do review this draft and let us know your feedback. -- Title : IP Flow Information Export (IPFIX) Information Elements Extension for Forwarding Exceptions. Authors : Chaitanya Munukutla Shivam Vaid Aditya Mahale Devang Patel Filename : draft-mvmd-opsawg-ipfix-fwd-exceptions-02 Last updated: 2021-02-04 Abstract : This draft proposes couple of new Forwarding exceptions related Information Elements (IEs) and Templates for the IP Flow Information Export (IPFIX) protocol. These new Information Elements and Exception Template can be used to export information about any forwarding errors in a network. This essential information is adequate to correlate packet drops to any control plane entity and map it to an impacted service. Once exceptions are correlated to a particular entity, an action can be assigned to mitigate such problems essentially enabling self-driving networks. -- The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-mvmd-opsawg-ipfix-fwd-exceptions/<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-mvmd-opsawg-ipfix-fwd-exceptions%2F&data=04%7C01%7CThomas.Graf%40swisscom.com%7Ca4f03da8f61048936eca08d8d771d4fc%7C364e5b87c1c7420d9beec35d19b557a1%7C1%7C0%7C637496231201225710%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=RG68bfLtbxSLNRrVlSNft9%2BuEt%2FsADdKyYUU51GSbfM%3D&reserved=0> Side-by-side diff from version 00 for this draft is available at: https://www.ietf.org/rfcdiff?url1=draft-mvmd-opsawg-ipfix-fwd-exceptions-00&url2=draft-mvmd-opsawg-ipfix-fwd-exceptions-02<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Frfcdiff%3Furl1%3Ddraft-mvmd-opsawg-ipfix-fwd-exceptions-00%26url2%3Ddraft-mvmd-opsawg-ipfix-fwd-exceptions-02&data=04%7C01%7CThomas.Graf%40swisscom.com%7Ca4f03da8f61048936eca08d8d771d4fc%7C364e5b87c1c7420d9beec35d19b557a1%7C1%7C0%7C637496231201235669%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=4XCq21S1oQ7B1%2FUgt1AO7FEEPCn3ID6oIC%2FnhwjUiB4%3D&reserved=0> Regards, Chaitanya. Juniper Business Use Only
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