The following errata report has been submitted for RFC8584, "Framework for Ethernet VPN Designated Forwarder Election Extensibility".
-------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid7811 -------------------------------------- Type: Technical Reported by: Luc André Burdet <laburdet.i...@gmail.com> Section: 3.2. HRW Algorithm Original Text ------------- Where: o DF(V) is defined to be the address Si (index i) for which Weight(V, Es, Si) is the highest; 0 <= i < N-1. o BDF(V) is defined as that PE with address Sk for which the computed Weight is the next highest after the Weight of the DF. j is the running index from 0 to N-1; i and k are selected values. Corrected Text -------------- Where: o DF(V) is defined to be the address Si (index i) for which Weight(V, Es, Si) is the highest; 0 <= i <= N-1. o BDF(V) is defined as that PE with address Sk for which the computed Weight is the next highest after the Weight of the DF. j is the running index from 0 to N-1; i and k are selected values. Notes ----- Paul Kyzivat raised a point while reviewing EVPN Port-Active draft, that really points to a possible algorithm errata in RFC8584 ; Basically, when evaluating the DF for HRW, > * DF(Es) is defined to be the address Si (index i) for which > Weight(Es, Si) is the highest; 0 <= i < N-1. Here, if N=1, no remotes: 0 <= i < 0 -- ERROR if N=2, 1 peer: 0 <= i < 1 -> possible values are only 0 meaning index 1 (the peer)’s weight is not considered. Logically, this should be 0 <= i <= N-1 or 0 <= i < N ? Instructions: ------------- This erratum is currently posted as "Reported". (If it is spam, it will be removed shortly by the RFC Production Center.) Please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party will log in to change the status and edit the report, if necessary. -------------------------------------- RFC8584 (draft-ietf-bess-evpn-df-election-framework-09) -------------------------------------- Title : Framework for Ethernet VPN Designated Forwarder Election Extensibility Publication Date : April 2019 Author(s) : J. Rabadan, Ed., S. Mohanty, Ed., A. Sajassi, J. Drake, K. Nagaraj, S. Sathappan Category : PROPOSED STANDARD Source : BGP Enabled ServiceS Area : Routing Stream : IETF Verifying Party : IESG _______________________________________________ BESS mailing list BESS@ietf.org https://www.ietf.org/mailman/listinfo/bess
