[Bier] Comments on draft-ietf-bier-pmmm-oam-04
Suneesh <suneeshbk@gmail.com> Mon, 19 November 2018 17:24 UTC
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From: Suneesh <suneeshbk@gmail.com>
Date: Mon, 19 Nov 2018 22:53:50 +0530
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To: bier@ietf.org, gregimirsky@gmail.com, vero.zheng@huawei.com, mach.chen@huawei.com, giuseppe.fioccola@telecomitalia.it
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Subject: [Bier] Comments on draft-ietf-bier-pmmm-oam-04
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Hi Greg, I have following comments on PMMM draft, please share your thoughts. Q1. Can you please share how the draft is viewed as a hybrid model? Ref: Section-3: <snip> the marking method in BIER layer can be viewed as the example of the hybrid performance measurement method </snip> Q2. Can you please define what is meant by sub-flows a). Is the sub-flow set of flows on which marking method is applied OR b). sub-flow-1 with say marking 0 and sub flow-2 with say marking 1 OR c). Being a hybrid model, draft proposes to duplicate the multicast stream which is having marking and treated those as sub-flows? Ref: Section-4: Theory of Operation <snip> Using the marking method a BFR creates distinct sub-flows in the particular multicast traffic over BIER layer </snip> Q3. Is there any recommended values for 'number of packets' or/and 'time duration' for alternate marking method a). Just to know what is recommended to avoid say number of packets/time duration = 1 Q4. Lets say that the nodes is like A->B->C->D->F->G->H->I, the segment of interest is B->C->D for performance measurement a). Does the alternate marking values will clear from node D onwards? b). If not, what is recommended if we wish to measure between G->H->I Ref: Section-4: Theory of Operation <snip> Any combination of markings, Loss and/or Delay, can be applied to a multicast flow by any Bit Forwarding Router (BFR) at either ingress or egress point to perform node, link, segment or end-to-end measurement to detect performance degradation defect and localize it efficiently. </snip> Q5. Can we somewhere capture that 'proto' field of BIER header should not be "OAM request/reply", though we are using OAM bits in header. <snip> The OAM field MUST be used only for the performance measurement of data traffic in BIER layer. </snip> Regards, Suneesh
- [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Suneesh
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Greg Mirsky
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Greg Mirsky
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Suneesh
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Greg Mirsky
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Suneesh
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Greg Mirsky
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Suneesh
- Re: [Bier] Comments on draft-ietf-bier-pmmm-oam-04 Greg Mirsky