Re: [dtn] Fwd: New Version Notification for draft-ek-dtn-ethernet-00.txt

[Erik Kline <[e-mail]>]

Scott,

Thanks for the info.  I went looking through ion-open-source-4.1.2 and
I can see where a tap interface is set up, but I cannot yet see where
direct encap as an Ethernet payload is performed (I do see where
IPv4/IPv6 packets are inspected, coming off the tap interface).  I'll
keep looking, but if someone has a ready pointer that'd be great.

Was an EtherType formally registered for BP-over-Ethernet?  I saw in
the DTNME codebase [DTNME] where they appear to have an encap scheme,
using an EtherType of 0xd710, but I can't see that value registered in
any of the convenient EtherType lists [IANA802, IEEE802].

Thanks,
-Erik

DTNME: https://github.com/nasa/DTNME/blob/master/servlib/conv_layers/EthConvergenceLayer.h
IANA802: https://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml
IEEE802: https://standards-oui.ieee.org/ethertype/eth.txt

On Fri, Jul 14, 2023 at 8:36 PM <[e-mail]> wrote:
>
> Hi Erik,
>
> I believe something like this exists, which uses the linux kernel tun/tap
> interface to write frames or packets, per configuration.  It is called
> bptap, and is distributed with ION.
>
> ScottJ
>
> On Fri, 14 Jul 2023, Erik Kline wrote:
>
> > All,
> > I had been thinking about passing Bundles directly between/among Ethernet
> > peers (some RF links with MACs that are Ethernet like, and also some cloud
> > networking scenarios).  I took a stab at writing something down to help
> > formalize this.
> >
> > I have already received some unicast feedback about wanting support for
> > non-BP-native fragmentation and other options.  I think using the first byte
> > to differentiate  among {BPv6, BPv7, variant of RFC 8200 S4.5 fragment
> > header, something indicating RFC 9174 XFER_SEGMENTs, ...} should be quite
> > easy to write.  But I figured I'd see what y'all think.
> >
> > Hope to see folks in SF,
> > -Erik
> >
> > ---------- Forwarded message ---------
> > From: <[e-mail]>
> > Date: Mon, Jul 10, 2023 at 10:17 AM
> > Subject: New Version Notification for draft-ek-dtn-ethernet-00.txt
> >
> > A new version of I-D, draft-ek-dtn-ethernet-00.txt
> > has been successfully submitted by Erik Kline and posted to the
> > IETF repository.
> >
> > Name: draft-ek-dtn-ethernet
> > Revision: 00
> > Title: Support for the Delay- and Disruption-Tolerant Networking (DTN)
> > Bundle Protocol (BP) Datagrams over Ethernet
> > Document date: 2023-07-10
> > Group: Individual Submission
> > Pages: 8
> > URL: https://www.ietf.org/archive/id/draft-ek-dtn-ethernet-00.txt
> > Status: https://datatracker.ietf.org/doc/draft-ek-dtn-ethernet/
> > Html: https://www.ietf.org/archive/id/draft-ek-dtn-ethernet-00.html
> > Htmlized: https://datatracker.ietf.org/doc/html/draft-ek-dtn-ethernet
> >
> >
> > Abstract:
> > This memo describes a mechanism for the transmission of Bundle
> > Protocol (BP) Bundles over Ethernet links (BP-over-Ethernet),
> > describes limitations and operational considerations, and requests
> > some dedicated Ethernet parameters.
> >
> >
> >
> >
> > The IETF Secretariat
> >
> >
> >