> > => I don't understand the comment. The definition implies that you
> > can't forward from a non-routing interface. Perhaps you mean
> > that you should be able to forward _to_ a non-routing interface?
>
> no. by making "router" per-interface, you could have multiple
> set of interfaces which forward packet to/from. for instance,
> your router has 10 interfaces, and #1 is host mode,
> #2-#4 exchange
> traffic as router, #5-#9 exchange traffic as router
> (it's separate
> from #2-#4), and #10 is host mode.
=> So far I understand.
once you go into
> "router/host is
> a per-interface thing" you need to describe such
> combinaions in full
> detail.
=> Not really. This is just a definition. When it comes to
which interface forwards to which other interface this is
a matter of policy/configuration. If we were writing a document
about VPNs I would understand your expectation, but this is
just a definition which applies, regardless of which interface
is forwarding to any other interface.
> > > i'm for simple "router or host" in document, and leave
> > > per-interface
> > > "router" as a exercise for reader ("virtual router"
> > > concept is not new
> > > so vendors will make such device anyways).
> >
> > => The issue at hand is that the doc is not clear on
> > nodes that are both hosts and routers. Do you see any
> > harm in making the definition per interface?
>
> yes. i see a big harm and disambiguity introduced by
> the change.
> again, keep the document simple, and let vendors do
> funny/complex
> things if they want to.
=> Please see above. The change is only intended to indicate
that the forwarding is on a per interface basis and is not
intended to explain to vendors/operators how to build VPNs.
For instance, the definition of a router is a node that forwards
packets, intended for other nodes, from one interface to another.
This definition stands regardless of the type of interface
a router might use (physical, tunnel ...etc).
Hesham
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