[nvo3-dt-encap] Discussion summary - 1/10/2017

[Pankaj Garg <[e-mail]>]

Hi All,

Thanks for attending the call. My curated notes are below.

Participants:
    Erik Nordmark (Arista)
    Michael Smith (Cisco)
    Ignas Bagdonas (Equinix)
    Ilango Ganga (Intel)
    Sami Boutros (VMware)
    Tal Mizrahi (Marvell)
    David Mozes (Mellanox)
    Pankaj Garg (Microsoft)

1. We discussed the text for requiring at minimum 64-bytes to be
   supported in Geneve. There is consensus that we should propose a text
   to Geneve authors on minimum option length requirement. This would
   ensure there is common minimum support from all compliant Geneve
   implementations.

2. We discussed the idea of TLV0 further and upon discussion it was
   realized that it adds more confusion without any significant gain.
   Hence design team agreed to drop this from the proposed changes.

3. We agreed that we should put some text either in Geneve draft or
   design team report around supporting option ordering in Geneve
   implemnentations. The idea is that if a hardware can process options
   in TCAM but it can only process the first TLV, then control plane in
   a deployment can use this capability by ensuring a specific TLV is
   always the first one in the packet. We need someone to write this
   text.

4. We discussed split-NVE case and agreed that we need to ask WG whether
   in split-NVE case, options needs to be carried in other packet
   formats such as 802.1q and if they do, then would carrying Geneve
   frame in 802.1q be needed? Based on WG recommendation, an ETYPE
   and/or IP protocol number can be allocated for Geneve as well. Erik
   has agreed to write text around this question. Thanks Erik.

5. Sami has volunteered to write the initial draft for design team
   report. This report would contain our rationale for proposing a
   specific encapsulation and few specific extension use cases and how
   propose encapsulation meet those requirements. Thanks Sami.

6. Pankaj would send one extension use case around diagnostics. We would
   check with Tom on extension around security. Those will probably be
   two use cases we would cover in our design report.

Please let me know if I missed anything.

Thanks,
Pankaj (on behalf of NVO3 Encap Design Team)