[ih] More terminology (Was: multi-protocol routers, bridges)

[Vint Cerf]

uh, that's not what I remember. Blue boxes and Cap'n Crunch whistles took
over the inband audio signalling system until out of band control was
introduced.

v


On Thu, Dec 2, 2021 at 7:54 PM John Day via Internet-history <
internet-history at elists.isoc.org> wrote:

> The phone system has always separated control and ‘data’ in separate
> networks. The drawing of planes originates with ISDN
>
> I have looking for a good definition for years.
>
> > On Dec 2, 2021, at 18:07, Greg Skinner via Internet-history <
> internet-history at elists.isoc.org> wrote:
> >
> >
> >
> >> On Nov 27, 2021, at 6:46 PM, Carsten Bormann <cabo at tzi.org> wrote:
> >>
> >> On 28. Nov 2021, at 00:32, Noel Chiappa via Internet-history
> <internet-history at elists.isoc.org> wrote:
> >>>
> >>> We distinguished between two very different activities which 'routers'
> >>> performed; the handling of user traffic, which we called 'forwarding',
> and the
> >>> computation of routing data/tables (by routing protocols/algorithms),
> which
> >>> was often (but not always, IIRC) called 'routing'. (Slightly
> confusing, I
> >>> know! :-)
> >>
> >> Indeed, but both meanings of ?routing? prevail.
> >> I?ll call them routing1 and routing2, where routing1 is defined as the
> combination of routing2 and fowarding.
> >>
> >> We?ll use routing1 when describing the overall outcome, as in ?xyz does
> not route that traffic?, or in ?router?.
> >>
> >> We?ll use routing2 together with forwarding when it comes to how to
> implement routing1; RIB and FIB are clear examples of distinct concepts
> relating to routing2 and forwarding.  Routing protocols rarely provide
> forwarding and therefore are routing2.
> >> (A router that uses strict source routing or an SDN setup does not do
> routing2 at all?)
> >>
> >> The terms control plane and data plane are another attempt to slice
> this cake; I must admit I don?t know when those gained popularity.
> >>
> >> Gr??e, Carsten
> >>
> >
> > I was curious about the origins of control and data plane myself, so I
> looked into it a bit.  Their use dates back to at least the early 1990s.
> For example, see the 1991 CCITT (ITU) publication B-ISDN Protocol Reference
> Model and its Application, Recommendation I.321 <
> http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-I.321-199104-I!!PDF-E&type=items>.
> As an example of when it entered the IETF vernacular, see a message from
> 1994 that was posted to the ATM list <
> https://mailarchive.ietf.org/arch/msg/atm/MELrqzESZnZZFCZsjpb_ZNRcjPY/>
> in response to a question about RFC 1577.
> >
> > —gregbo
> >
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>
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