On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote: > >> Proposed solution: A MAC value should be chosen that is well known and the > >> text would become: > >> > >> "Destination MAC: A Management VNI, which does not have any tenants, will > >> have no dedicated MAC address for decapsulated traffic. The value > >> X:X:X:X:X > >> SHOULD be used in this field." > >> > >> SHOULD might need to be MUST. Since a partial motivation for permitting > >> the > >> flexibility in the specification to NOT use the management VNI is desired= > > , > >> MUST might be inappropriate. > >> > > GIM>> Accepted the suggested text. I agree that the flexibility to not use > > the Management VNI is permitted in the specification and thus SHOULD in the > > text is consistent with that scenario. How would we pick the MAC address? > > I am out of my area of expertise and I was hoping someone in the IESG can > offer a fix. :-) I am copying Donald Eastlake since he's the designated > expert for the IANA MAC address block. > > Donald, review of the thread may be useful, but tersely the need is to have a > well known MAC address that can be placed in this vxlan PDU that is literally > a placeholder of "not to be used for forwarding". The packet arrives at the > endpoint and, if not immediately accepted, would be dropped. > > If there is no well known MAC that could be used for such a behavior, perhaps > an address from the IANA block may be used? > > While I suspect the IANA mac documentation range could be used, IANA may not > appreciate that.
Donald is not responding to emails. Considering I've been similarly bad about responding, that's forgivable. However, in the interest of advancing the document, I'd like to make a proposal. https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml Proposed text: : Destination MAC: A Management VNI, which does not have any tenants, will : have no dedicated MAC address for decapsulated traffic. The value : [TBD1] SHOULD be used in this field. : : IANA Considerations: : : IANA is requested to assign a single MAC address to the value TBD1 from the : "IANA Unicast 48-bit MAC Address" registry from the "Unassigned (small : allocations)" block. The Usage field will be "BFD for vxlan" with a : Reference field of this document. -- Jeff
