[e2e] a future for circuits?

[Jon Crowcroft]

well, its clear that 100% isolation properties are needed between
some global organisations using a shared infrastructure
both in performance and in access control - the claim is that
i) sharing the underlying transmission and switching is a gain (e.g.
for operations&management) even when you don't get 
ii) the statistical multiplexing gain from all the elastic applications 

(I'm not sure the claim is 100% proven)

certainly I can see a _massive_ number of virtual private enclaves
in terms of access control (i'd like to manage all the devices in
my house from wherever I am  but not have anyone else get at any of
them - so I have an android phone on IP - I should be able to do
this from anywhere on the planet - i don't need hard multiplexing
though - just secure VPNs will do fine-)

one vision (e.g. BT's 21C network) has every household having
a swiched ethernets worth of capacity to anywhere (unspecified
wither its 10, 100, 1G or whatever), and there are management
simplifications if this maps to a sub-lambda mux on the optical
core and (slowly being deployed) access networks, purely in
hardware...

but i dont see soggy, fluffy, packet switching going away....

In missive <25f9e2130909031323i1e4c1042xd7f907804fd85f51 at mail.gmail.com>, "A
.B." typed:

 >>--0015175cd0788b0a1c0472b2294d
 >>Content-Type: text/plain; charset=windows-1252
 >>Content-Transfer-Encoding: quoted-printable
 >>
 >>Hi,
 >>
 >>There has been a lot of attention in the last years, within the academic
 >>networks community, for hybrid networks that can carry both IP (layer3)
 >>traffic as layer2 (Ethernet VLANs) =93pseudo-circuits=94.
 >>
 >>Can we see this as a sign that  a future public internet will widely provid=
 >>e
 >>both kinds of service?
 >>
 >>
 >>
 >>Regards,
 >>
 >>
 >>
 >>-          a.b.
 >>
 >>--0015175cd0788b0a1c0472b2294d
 >>Content-Type: text/html; charset=windows-1252
 >>Content-Transfer-Encoding: quoted-printable
 >>
 >>
 >>
 >><p><span lang=3D"EN-US">Hi,<br>
 >><br>
 >>There has been a lot of attention in the last years, within the academic
 >>networks community, for hybrid networks that can carry both IP (layer3) tra=
 >>ffic
 >>as layer2 (Ethernet VLANs) =93pseudo-circuits=94.</span></p>
 >>
 >><p><span lang=3D"EN-US">Can we see
 >>this as a sign that <span>=A0</span>a future public internet
 >>will widely provide both kinds of service?</span></p>
 >>
 >><p><span lang=3D"EN-US">=A0</span></p>
 >>
 >><p><span lang=3D"EN-US">Regards,</span></p>
 >>
 >><p><span lang=3D"EN-US">=A0</span></p>
 >>
 >><p><span lang=3D"EN-US"><span>-<span style=3D"font-family: &quot;Times New =
 >>Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal;=
 >> font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch:=
 >> normal;">=A0=A0=A0=A0=A0=A0=A0=A0=A0
 >></span></span></span><span lang=3D"EN-US">a.b.
 >></span></p>
 >>
 >>
 >>--0015175cd0788b0a1c0472b2294d--

 cheers

   jon