It doesn't matter if you call them enterprise networks and if they are bridged
or routed to the N2 Internet. This will make it all work in terms of MTU:
ifconfig eth0 mtu 1280
When you want to consider running both IPv4 and IPv6 over the topology you
describe below.
And you actually find networks that bridge from the enterprise to the Internet?
That is a brain-dead and dangerous design and I never see that.
Dino
> On Dec 8, 2021, at 3:07 PM, Templin (US), Fred L <fred.l.temp...@boeing.com>
> wrote:
>
> Dino -see below:
>
>> -----Original Message-----
>> From: Dino Farinacci [mailto:farina...@gmail.com]
>> Sent: Wednesday, December 08, 2021 12:19 PM
>> To: Templin (US), Fred L <fred.l.temp...@boeing.com>
>> Cc: to...@strayalpha.com; int-area@ietf.org
>> Subject: Re: [Int-area] Side meeting follow-up: What exact features do we
>> want from the Internet?
>>
>>> On Dec 8, 2021, at 8:30 AM, Templin (US), Fred L
>>> <fred.l.temp...@boeing.com> wrote:
>>>
>>> Absolutely not talking about translation - talking about concatenation and
>>> adaptation.
>>
>> Those terms are too general. Please be more specific.
>
> OK, let's take an example of three independent Internetworks; call them N1,
> N2 and N3.
> N2 could be the global Internet while N1, N3 could be (for example) a couple
> of enterprise
> networks. The networks can be concatenated by joining them with Bridges, such
> as:
>
> H1 <-> N1 <-> B1/2 <-> N2 <-> B2/3 <-> N3 <-> H2
>
> So host H1 connected to N1 can communicate with H2 connected to N3 with both
> using
> global IP addresses. Then, somewhere in N1 and N3 are nodes that configure an
> OMNI
> interface that invokes the OMNI Adaptation Layer (OAL). The OAL wraps the
> H1<->H2 IP
> packets in an IPv6 header, then wraps the IP-in-IPv6 packets in headers
> appropriate for
> network N* and forwards them to the nearest Bridge. The Bridge only operates
> on the
> adaptation layer IPv6 header and NOT on the inner IP header (that is why it
> is called
> "Bridge" and not "Router"), and forwards the packets over the next N* hop
> toward the
> final destination.
>
> You can concatenate as many networks as you like (and having diverse IP
> protocols)
> and the Bridges operating at the adaptation layer allow hosts located in
> distant
> networks to communicate at the IP layer.
>
> Fred
>
>
>> Dino=
>
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