Re: [Ila] [DMM] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt
Marco Liebsch <Marco.Liebsch@neclab.eu> Thu, 08 February 2018 10:03 UTC
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From: Marco Liebsch <Marco.Liebsch@neclab.eu>
To: Marco Liebsch <Marco.Liebsch@neclab.eu>, "Sri Gundavelli (sgundave)" <sgundave@cisco.com>, "Bogineni, Kalyani" <Kalyani.Bogineni@VerizonWireless.com>, Dino Farinacci <farinacci@gmail.com>
CC: "ila@ietf.org" <ila@ietf.org>, dmm <dmm@ietf.org>
Thread-Topic: [DMM] [Ila] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt
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Date: Thu, 08 Feb 2018 10:03:04 +0000
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Subject: Re: [Ila] [DMM] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt
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..sorry, correction in my first sentence below: "True, control plane impact on data plane can be on N3, N9 but also on N6.".. From: dmm [mailto:dmm-bounces@ietf.org] On Behalf Of Marco Liebsch Sent: Donnerstag, 8. Februar 2018 10:50 To: Sri Gundavelli (sgundave); Bogineni, Kalyani; Dino Farinacci Cc: ila@ietf.org; dmm Subject: Re: [DMM] [Ila] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt Hi Kalyani, My take on your latest feedback: > I think you are talking about 2 features: one for mobility that needs the database; another > for non-mobility state transfer between user plane nodes (not necessarily mobility nodes). True, control plane impact on data plane can be on N3, N9 but also on N9. The latter is probably what you classify as non-mobility. My point was to not break the N4 but rather look towards a reasonable and extensible protocol solution so that mapping rules can be carried over it. In such case the mapping DB may be co-located with the SMF or external to the SMF. My main point was to not make the control plane configuring the data plane through the service-based interfaces. About the second case, I think it's interesting enough to include N6 where the mapping system would control the data plane to steer traffic to the mobile's UPF(s). Think about decentralizing the UPFs and relocating a UPF mid-session. The plain old but popular DMM scenario: How to enable IP address- and session continuity when the anchor UPF changes. Best regards, marco From: Sri Gundavelli (sgundave) [mailto:sgundave@cisco.com] Sent: Mittwoch, 7. Februar 2018 18:23 To: Bogineni, Kalyani; Marco Liebsch; Dino Farinacci Cc: ila@ietf.org<mailto:ila@ietf.org>; dmm Subject: Re: [Ila] [DMM] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt Hi Kalyani, For all the approaches that we are talking (ILA, LISP, SRv6 ..etc), there are two nodes that's where the translation/tunneling is happening. In a generic sense, it could be a layer-2 termination point, a first-hop router, or a transit router. When seen from 3GPP lens, there is only UPF and the N4 interface that you talk about. But, there is N3 (eNB to UPF) and then there are also other nodes where there is an impact. The translation/tunneling/steering may very well happen on some router connected to the service cloud/core (on N6), or at some exit router where there is no 3GPP UPF function and there is no N4. So, there are two key questions here: 1.) Is the UPF only node that is impacted here? Is the assumption that these protocols are doing some translation/tunneling only on UPF node? Or, we can introduce a two types of IP forwarding nodes, one collocated with UPF and another without UPF. I know how this discussion will go in 3GPP; they will insist and say they we will never recognize any other node other what they created. 2.) Is N4 the only interface to these two types of node variants. Or we will have N4' to these both types of nodes from some AF (which can interwork with the service bus), and we don't' touch N4. Marco's point is to keep this generic and not make this very UPF specific, as it will be too restrictive. Sri From: "Bogineni, Kalyani" <Kalyani.Bogineni@VerizonWireless.com<mailto:Kalyani.Bogineni@VerizonWireless.com>> Date: Tuesday, February 6, 2018 at 1:23 PM To: Marco Liebsch <Marco.Liebsch@neclab.eu<mailto:Marco.Liebsch@neclab.eu>>, Sri Gundavelli <sgundave@cisco.com<mailto:sgundave@cisco.com>>, Dino Farinacci <farinacci@gmail.com<mailto:farinacci@gmail.com>> Cc: "ila@ietf.org<mailto:ila@ietf.org>" <ila@ietf.org<mailto:ila@ietf.org>>, dmm <dmm@ietf.org<mailto:dmm@ietf.org>> Subject: RE: [Ila] [DMM] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt Marco, Sri: Here is the services based 5G architecture. [cid:image001.png@01D3A0CC.642ADEA0] SMF is a control plane entity and talks to the User plane functions (UPF) through N4 interface as specified in 3GPP TS 29.244. Here are two variants: Option 1: Mapping DB talks to the UPFs using a variant of N4 possibly. [cid:image002.png@01D3A0CC.642ADEA0] Option 2: Here there is no direct interface between Mapping Db and UPFs. UPFs also support APIs like the control plane functions. [cid:image003.png@01D3A0CC.642ADEA0] The architecture is extensible and additional control plane or user plane functions can be added. Is this what you had in mind? Kalyani -----Original Message----- From: ila [mailto:ila-bounces@ietf.org] On Behalf Of Marco Liebsch Sent: Tuesday, February 6, 2018 12:09 PM To: Sri Gundavelli (sgundave) <sgundave@cisco.com<mailto:sgundave@cisco.com>>; Dino Farinacci <farinacci@gmail.com<mailto:farinacci@gmail.com>> Cc: ila@ietf.org<mailto:ila@ietf.org>; dmm <dmm@ietf.org<mailto:dmm@ietf.org>> Subject: Re: [Ila] [DMM] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt It could be a nice option to keep the data plane specific control (the mapping DB you refer to) in the user plane and take a common N4 to update the mapping DB in case of mobility. But I think that clashes with the clear data plane / control plane separation in nextgen. And: there may be data plane solutions which don't come with a control plane / mapping system. For these the N4 needs to disseminate complete forwarding states (an more, e.g. for chargeable event monitoring, device dormancy support etc.) to all relevant data plane nodes, means the ones that hold a state for the mobile. Btw, in terms of compatibility with nextgen, so far N4 is terminated only in few types of core data plane nodes with a dedicated role. We may investigate options to push forwarding and further policies from the (nextgen) control plane to other data plane nodes which don't terminate N4. marco -----Original Message----- From: dmm [mailto:dmm-bounces@ietf.org] On Behalf Of Sri Gundavelli (sgundave) Sent: Dienstag, 6. Februar 2018 04:07 To: Dino Farinacci Cc: dmm; ila@ietf.org<mailto:ila@ietf.org> Subject: Re: [DMM] [Ila] [E] Re: Fwd: New Version Notification for draft-herbert-ila-mobile-00.txt > The UPF sends IP packets. The UPF is part of the NGC core, right? So >the packets from the UPF get to a map-resolver and map-server via IP. >It's pretty simple. At least it should be. Sure, that LISP control plane packet is an IP packet. But, every message that is going between CP and UP will be named and numbered in 3GPP specs, and so said in my first mail that its probably a new interface specific to LISP. With any of the IETF protocols, PMIPv6/LISP/ILA, it can be argued that these are IP packets. But, we should note that there is interworking needed with the 3GPP authentication infrastructure, and the protocol specific control plane. Note that these protocols are not doing MN identity establishment. May be I could be wrong here on the assumptions you have around LISP MN capabilities, but to me MN is a standard 3GPP UE with no special capabilities such as MIPv6/LISP MN stack. Sri On 2/5/18, 6:52 PM, "Dino Farinacci" <farinacci@gmail.com<mailto:farinacci@gmail.com>> wrote: >> Sure, but I assume the mapping table/DB is some where else in some >>central location and not on the UPF? > >True. > >> The question is how does the UPF fetch that entry and if the >>interface for that query is built on some 3GPP interface, or its >>internal to LISP with no bearing on the access technology. > >The UPF sends IP packets. The UPF is part of the NGC core, right? So >the packets from the UPF get to a map-resolver and map-server via IP. >It's pretty simple. At least it should be. > >Dino > >> >> Sri >> >> >> >> On 2/5/18, 6:42 PM, "Dino Farinacci" <farinacci@gmail.com<mailto:farinacci@gmail.com>> wrote: >> >>> I don't know what you mean. If you put the xTR function on an UPF, >>> then by LISP spec definition, Map-Request, Map-Reply, and >>> Map-Register functionality is part of the UPF. >>> >>> Dino >>> >>>> On Feb 5, 2018, at 5:27 PM, Sri Gundavelli (sgundave) >>>> <sgundave@cisco.com<mailto:sgundave@cisco.com>> wrote: >>>> >>>> I suspect there might be a need for a new interface. >>>> >>>> Assuming the LISP mapping system stays in the control plane, next >>>>to SMF/AMF, and the xTR functions on the UPF, there needs to be >>>>probably a new interface along the lines of the N4, for managing >>>>the LISP MAP operations (Reg/Req/Reply/Notify..). But, off course >>>>if the mapping system stays in the user-plane, may be there is just >>>>interworking with the 3GPP authentication interfaces. >>>> >>>> Sri >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> On 2/5/18, 5:15 PM, "Bogineni, Kalyani" >>>> <Kalyani.Bogineni@VerizonWireless.com<mailto:Kalyani.Bogineni@VerizonWireless.com>> wrote: >>>> >>>>> Dino: >>>>> >>>>> Please look at 3GPP TS 23.501 to understand the architecture of NGC. >>>>>We >>>>> tried to explain that in the White paper. >>>>> TS 23.502 has the procedures for the NGC. TS 23.503 specifies the >>>>>policy and charging control framework for NGC. >>>>> CT4 has a technical report on protocol aspects for NGC in TR 29.891. >>>>> >>>>> Your draft needs to describe how it fits in the 5G architecture, >>>>>right now it only addresses 4G. >>>>> >>>>> Kalyani >>>>> >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: ila [mailto:ila-bounces@ietf.org] On Behalf Of Dino >>>>>Farinacci >>>>> Sent: Monday, February 5, 2018 7:32 PM >>>>> To: Bogineni, Kalyani <Kalyani.Bogineni@VerizonWireless.com<mailto:Kalyani.Bogineni@VerizonWireless.com>> >>>>> Cc: Tom Herbert <tom@quantonium.net<mailto:tom@quantonium.net>>; ila@ietf.org<mailto:ila@ietf.org>; dmm >>>>><dmm@ietf.org<mailto:dmm@ietf.org>>; Sri Gundavelli (sgundave) <sgundave@cisco.com<mailto:sgundave@cisco.com>> >>>>> Subject: Re: [Ila] [E] Re: [DMM] Fwd: New Version Notification for >>>>>draft-herbert-ila-mobile-00.txt >>>>> >>>>>> On Feb 6, 2018, at 5:04 AM, Bogineni, Kalyani >>>>>> <Kalyani.Bogineni@VerizonWireless.com<mailto:Kalyani.Bogineni@VerizonWireless.com>> wrote: >>>>>> >>>>>> Dino: >>>>>> >>>>>> Can you add a section to show how this proposal would fit in 5G >>>>>> architecture? >>>>> >>>>> Can you be more specific in what you¹d like to see in the new >>>>>section? >>>>> >>>>> There are references throughout the draft where you see eNodeB and >>>>>pGW that UPF functionality could be at the same network mode >>>>>location. >>>>> >>>>> Dino >>>>> _______________________________________________ >>>>> ila mailing list >>>>> ila@ietf.org<mailto:ila@ietf.org> >>>>> >>>>> >>>>>https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_m >>>>>ail >>>>>ma >>>>> n_ >>>>> >>>>> >>>>>listinfo_ila&d=DwIGaQ&c=udBTRvFvXC5Dhqg7UHpJlPps3mZ3LRxpb6__0PomBTQ >>>>>&r= >>>>>Id >>>>> iS >>>>> >>>>> >>>>>ODh8aDRjdCeGgd9MznLHMYKgKcs_YSwXBDiaofh47oilzaXYRYETcBynUdpT&m=zf1K >>>>>fRu >>>>>4n >>>>> UF >>>>> >>>>> >>>>>sUT8IJVExPygA_iAC-h4BErkY_CE2ugM&s=oLQOKLOAxuYtjVD_qWMbiQjkmP9acy6A >>>>>u0X >>>>>6l >>>>> pS >>>>> iBvg&e= >>>> >>> >> > _______________________________________________ dmm mailing list dmm@ietf.org<mailto:dmm@ietf.org> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_dmm&d=DwIFAw&c=udBTRvFvXC5Dhqg7UHpJlPps3mZ3LRxpb6__0PomBTQ&r=IdiSODh8aDRjdCeGgd9MznLHMYKgKcs_YSwXBDiaofh47oilzaXYRYETcBynUdpT&m=lWGVj8Jd11JyGVLcPLOSIxTZ-YHY3VbtfD1mi2uqhOY&s=-EIvAEYOQusoChy_iwtR4nMkaEqRKBTKTJ8GDjADuCk&e= _______________________________________________ ila mailing list ila@ietf.org<mailto:ila@ietf.org> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_ila&d=DwIFAw&c=udBTRvFvXC5Dhqg7UHpJlPps3mZ3LRxpb6__0PomBTQ&r=IdiSODh8aDRjdCeGgd9MznLHMYKgKcs_YSwXBDiaofh47oilzaXYRYETcBynUdpT&m=lWGVj8Jd11JyGVLcPLOSIxTZ-YHY3VbtfD1mi2uqhOY&s=cwX6UkOqq2vREiCvsQ7GPBXgKsinbkDmmckbpGwi73o&e=
- [Ila] Fwd: New Version Notification for draft-her… Tom Herbert
- [Ila] Fwd: New Version Notification for draft-her… Tom Herbert
- Re: [Ila] Fwd: New Version Notification for draft… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Dino Farinacci
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Dino Farinacci
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Marco Liebsch
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Templin, Fred L
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [DMM] Fwd: New Version Notification for… Lorenzo Colitti
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Lorenzo Colitti
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Lorenzo Colitti
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Lorenzo Colitti
- Re: [Ila] [DMM] Fwd: New Version Notification for… Sri Gundavelli (sgundave)
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [E] Re: [DMM] Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Arashmid Akhavain
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Behcet Sarikaya
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Behcet Sarikaya
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Arashmid Akhavain
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Ron Parker
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Ron Parker
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Templin, Fred L
- Re: [Ila] [DMM] Fwd: New Version Notification for… Templin, Fred L
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Dino Farinacci
- Re: [Ila] [DMM] Fwd: New Version Notification for… Dino Farinacci
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] Fwd: New Version Notification for… Templin, Fred L
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Marco Liebsch
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Sri Gundavelli (sgundave)
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Uma Chunduri
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Uma Chunduri
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Uma Chunduri
- Re: [Ila] [DMM] [E] Re: Fwd: New Version Notifica… Bogineni, Kalyani
- Re: [Ila] [DMM] Fwd: New Version Notification for… Alexandre Petrescu
- Re: [Ila] [DMM] Fwd: New Version Notification for… Tom Herbert
- Re: [Ila] [DMM] Fwd: New Version Notification for… Alexandre Petrescu