I started poking around to learn more about these use cases and came across this interesting extract <https://www.juniper.net/us/en/products-services/routing/acx-series/datasheets/1000397.page> :
"Juniper Networks® ACX Series Universal Metro Routers are Juniper’s response to a shift in metro network architecture, where the access and aggregation layers are extending the operational intelligence from the service provider edge to the access network." Not long ago, I used to think of anything above layer 2 as "service provider edge" and further still (away from access), but the responses I've garnered are pointing at a metro network that widely implements MPLS and access and aggregation segments that are seeing implementation of L3 functions. Etienne On Tue, Apr 28, 2020 at 7:45 PM Aaron Gould <aar...@gvtc.com> wrote: > Yeah, I forgot earlier but I’m using EVPN/MPLS for DC interconnections now > also, for nicely integrating L2/L3 and host/machine level route preference > > > > MPLS in some ways is reminiscent of the ability to fire-off Smart-PVC’s > (SPVC/P) over an ATM (asynchronous transfer mode) network, and thus achieve > end to end virtual private connectivity without touching the intermediate > nodes (p nodes)…. Since the p-nodes just do label swapping (like vpi/vci > swapping in the atm analogy) > > > > In actuality, many of my “p” nodes, are also “pe” nodes J it’s all > about what it’s doing at that moment for what it is that we are talking > about > > > > -Aaron > > > > > > *From:* NANOG [mailto:nanog-boun...@nanog.org] *On Behalf Of * > adamv0...@netconsultings.com > *Sent:* Tuesday, April 28, 2020 10:46 AM > *To:* 'Etienne-Victor Depasquale'; 'NANOG' > *Subject:* RE: Applications of MPLS in the metro area > > > > Hi, > > So where the books talk about PEs -think of your metro nodes here > (basically converting the metro into an MPLS network -or making it part of > your existing MPLS core) (you might not have a classic design where PEs > hang off of P-Core nodes and might have just rings of PEs in your metro > area) > > And where the books talk about various L3VPN and L2VPN services that’s > basically what you can offer over your metro -now that it’s been converted > to a fully-fledged MPLS network. > > Ranging from multicast L3VPNs for 3PALY services through L2 p2p|p2mp|mp2mp > services for Dat-Center-Interconect, to network-slicing buzzword (cause > with VRFs and Traffic Engineering you can slice your metro area network > whichever way you like). > > > > adam > > > > *From:* NANOG <nanog-boun...@nanog.org> *On Behalf Of *Etienne-Victor > Depasquale > *Sent:* Tuesday, April 28, 2020 2:44 PM > *To:* NANOG <nanog@nanog.org> > *Subject:* Applications of MPLS in the metro area > > > > Hello ! > > > > I'm looking for what a network operator would consider a realistic > reference deployment of MPLS within the metro area network. > > > > By "realistic reference", I'm asking about what a network operator would > consider to be a typical, perhaps most common, application of MPLS > technology. > > > > From a bookish perspective, I understand MPLS well but have never > implemented it in the scope of my current field of study (metro area > networks). I would dearly like to get this "grounded" perspective from > anyone who might care to share it. > > > > > > Cheers, > > > > Etienne > > > > -- > > Ing. Etienne-Victor Depasquale > Assistant Lecturer > Department of Communications & Computer Engineering > Faculty of Information & Communication Technology > University of Malta > > Web. https://www.um.edu.mt/profile/etiennedepasquale > -- Ing. Etienne-Victor Depasquale Assistant Lecturer Department of Communications & Computer Engineering Faculty of Information & Communication Technology University of Malta Web. https://www.um.edu.mt/profile/etiennedepasquale