Re: [DMM] SRv6 for Mobile User-Plane
Hi Pablo, Let me focus on one point. > [...snip...] > > > > > Uplink > > Note: S1, S2 represent service functions and C1 represents a node for > TE purposes > > UE sends its packet (A, Z) on a specific wireless bearer to its gNB > > gNB’s CP associates the session from the UE (A) with IPv6 address B and > TEID T (N2 interface unchanged) > > gNB_out: (gNB, B) (GTP: TEID T) (A, Z) ;; > Interface N3 is unchanged > > SR_GW_out: (SRGW, S1) (U2::1, C1; SL=2)(A, Z) ;; new End.GTP.UP > > S1_out: (SRGW, C1) (U2::1, C1; SL=1)(A, Z) > > C1_out: (SRGW, U2::1) (A, Z) ;; > assuming PSP > > UPF2_out: (A, Z) > ;; End.DT > > > > Don’t you need to care about TEID at SRGW in aggregate mode? > I think it is okay for uplink in basic mode since it allocates SID per > tunnel. > [PC]: For the basic mode, yes it is ok. For the aggregate mode, we can ignore > the TEID since we don’t have scaling issues on the BSID. A BSID is an > indirecton to an SR policy, and hence we can have many BSIDs pointing to the > same SR policy. Hence I would not expect any scalability issue here. That’s interesting. But using T.Encap would be also one of your intent to support IPv4 PDU case, right? If it’s right, U2::1 doesn’t indicate specific one single session in this case so that it won’t work for IPv4 PDU case IMO. And there’s also an interesting point in the packet flow that the SRGW uses S1 as the first SID but it doesn’t exist in SRH while the SL=2 points S1. It sounds a good solution to save overhead size. Is it acceptable SRH handling in terms of SRv6 spec? Cheers, --satoru ___ dmm mailing list dmm@ietf.org https://www.ietf.org/mailman/listinfo/dmm
Re: [DMM] I-D Action: draft-ietf-dmm-distributed-mobility-anchoring-08.txt
Hi Carlos/Anthony/Authors, Thanks for the updates. Please summarize the changes that went into -08 version, and also let the WG know on the open issues. Sri On 3/2/18, 10:15 AM, "dmm on behalf of internet-dra...@ietf.org" wrote: > >A New Internet-Draft is available from the on-line Internet-Drafts >directories. >This draft is a work item of the Distributed Mobility Management WG of >the IETF. > >Title : Distributed Mobility Anchoring >Authors : H. Anthony Chan > Xinpeng Wei > Jong-Hyouk Lee > Seil Jeon > Carlos J. Bernardos > Filename: draft-ietf-dmm-distributed-mobility-anchoring-08.txt > Pages : 15 > Date: 2018-03-02 > >Abstract: > This document defines distributed mobility anchoring in terms of the > different configurations and functions to provide IP mobility > support. A network may be configured with distributed mobility > anchoring functions for both network-based or host-based mobility > support according to the needs of mobility support. In the > distributed mobility anchoring environment, multiple anchors are > available for mid-session switching of an IP prefix anchor. To start > a new flow or to handle a flow not requiring IP session continuity as > a mobile node moves to a new network, the flow can be started or re- > started using a new IP address configured from the new IP prefix > which is anchored to the new network. The mobility functions and > their operations and parameters are general for different > configurations. > > >The IETF datatracker status page for this draft is: >https://datatracker.ietf.org/doc/draft-ietf-dmm-distributed-mobility-ancho >ring/ > >There are also htmlized versions available at: >https://tools.ietf.org/html/draft-ietf-dmm-distributed-mobility-anchoring- >08 >https://datatracker.ietf.org/doc/html/draft-ietf-dmm-distributed-mobility- >anchoring-08 > >A diff from the previous version is available at: >https://www.ietf.org/rfcdiff?url2=draft-ietf-dmm-distributed-mobility-anch >oring-08 > > >Please note that it may take a couple of minutes from the time of >submission >until the htmlized version and diff are available at tools.ietf.org. > >Internet-Drafts are also available by anonymous FTP at: >ftp://ftp.ietf.org/internet-drafts/ > >___ >dmm mailing list >dmm@ietf.org >https://www.ietf.org/mailman/listinfo/dmm ___ dmm mailing list dmm@ietf.org https://www.ietf.org/mailman/listinfo/dmm
[DMM] I-D Action: draft-ietf-dmm-distributed-mobility-anchoring-08.txt
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Distributed Mobility Management WG of the IETF. Title : Distributed Mobility Anchoring Authors : H. Anthony Chan Xinpeng Wei Jong-Hyouk Lee Seil Jeon Carlos J. Bernardos Filename: draft-ietf-dmm-distributed-mobility-anchoring-08.txt Pages : 15 Date: 2018-03-02 Abstract: This document defines distributed mobility anchoring in terms of the different configurations and functions to provide IP mobility support. A network may be configured with distributed mobility anchoring functions for both network-based or host-based mobility support according to the needs of mobility support. In the distributed mobility anchoring environment, multiple anchors are available for mid-session switching of an IP prefix anchor. To start a new flow or to handle a flow not requiring IP session continuity as a mobile node moves to a new network, the flow can be started or re- started using a new IP address configured from the new IP prefix which is anchored to the new network. The mobility functions and their operations and parameters are general for different configurations. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-dmm-distributed-mobility-anchoring/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-dmm-distributed-mobility-anchoring-08 https://datatracker.ietf.org/doc/html/draft-ietf-dmm-distributed-mobility-anchoring-08 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-dmm-distributed-mobility-anchoring-08 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ ___ dmm mailing list dmm@ietf.org https://www.ietf.org/mailman/listinfo/dmm
