[manet] Re: Routers with multiple DLEP modems

I would say if a router is connected to multiple radios and using DLEP
with each of them, the router should use a separate layer-2 segment
for each of them... different ethernet interfaces, different VLANs on
the same ethernet interface, different (layer-2) tunnels to each of
the radios. Otherwise the layer-2 transparency DLEP/RFC 8175 assumes
is broken.

Even if you use layer-3 (routing) radios together with the Link-ID
extension for DLEP (RFC 8703), you should still connect each of them
with a separate layer-2 segment. Otherwise you might run into a lot of
issues.

So "layer-2 domain" or "layer-2/ethernet segment" seems like the right
phrase for me.

Henning Rogge

On Mon, May 5, 2025 at 3:52 PM Sipos, Brian J. <[email protected]> wrote:
>
> All,
>
> I am looking for any existing terminology to discuss a situation where a single DLEP router has established sessions to multiple DLEP modems, each operating in separate isolated address spaces. Each address space has many modems and routers which are or can be aware of each other (in a time varying way), and there is no cross-over of visibility between the address spaces.
>
>
>
> The DLEP spec itself discusses operating within a data plane “Layer 2 domain” but the term I’m looking for is more related to the control-plane aspect of “a collection of DLEP routers and modems which can be aware of each other both at layer-2 and layer-3”. Is calling this a “DLEP domain” a reasonable and non-colliding use of the term?
>
>
>
> The overall idea being that some DLEP router is a participant in several DLEP domains, each operating separately from each other so the modems don’t have cross-domain visibility but the router is aware of all of them together.
>
>
>
> Thanks for any advice or pointers,
>
> Brian S.
>
>
>
> [1] https://www.rfc-editor.org/rfc/rfc8175.html
>
>
>
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