Re: [Bier] A comment about draft-xzlnp-bier-ioam

only advantage I see is that you can put telemetry on the data frame rather
than sending separate frame so it's somewhat more efficient but especially
you measure the data plane wihtout skewing it by telemetry (or skewing it
less than separate frames). That has pluses and minuses, biggest minus I
see fragmentation and the discussion about multicast vs. unicast OAM.
depending WHERE you want your OAM putting it on a frame may be a good or a
bad idea since the data frame determines replication

-- tony

On Sat, Mar 19, 2022 at 2:59 PM Tianran Zhou <zhoutianran=
40huawei.com@dmarc.ietf.org> wrote:

> I have concern about so many options for the same functionality.
>
>
> Especially, there’s already IOAM encapsulation for MPLS and IPv6. Why we need another encapsulation in BIER layer?
> As far as I understand, BIER will always be used with MPLS or IPv6.
>
> Tianran
>
>
>
>
> ------------------------------
>
> Sent from WeLink
> *发件人： *xiao.min2<xiao.min2@zte.com.cn>
> *收件人： *zzhang=40juniper.net<zzhang=40juniper.net@dmarc.ietf.org>
> *抄送： *bier<bier@ietf.org>
> *主题： *Re: [Bier] A comment about draft-xzlnp-bier-ioam
> *时间： *2022-03-19 14:33:01
>
> Hi Jeffrey,
>
> Thank you for bringing it up to our attention.
> I do agree your GDF draft provides a third option on how to encapsulate
> IOAM over BIER, which is different from the two options already described
> and compared in this BIER-IOAM draft.
> To my understanding, the initial and main motivation to introduce GDF is
> to provide a fragmentation header for MPLS/BIER etc, just like IPv6 FH.
> With that in mind, one possible way to push this "Encapsulating IOAM in
> BIER" work forward is to add the third option into BIER-IOAM draft for
> comparison, that makes it focused and easy to follow.
> What's your opinion?
>
> Best Regards,
> Xiao Min
>
> ------------------原始邮件------------------
> 发件人：Jeffrey(Zhaohui)Zhang
> 收件人：'bier@ietf.org';draft-xzlnp-bier-ioam@ietf.org;
> 日 期 ：2022年03月18日 20:56
> 主 题 ：[Bier] A comment about draft-xzlnp-bier-ioam
> Hi,
> For IOAM data in BIER, I want to point out that we should use a generic
> header format that can be used for BIER/MPLS/IPv6. The same extension
> mechanism can be used for other purposes like fragmentation/security, etc..
> This was discussed in
> https://www.ietf.org/archive/id/draft-zzhang-intarea-generic-delivery-functions-02.txt,
> and was mentioned in slide #6 of
> https://datatracker.ietf.org/meeting/112/materials/slides-112-bier-03-bier-slicing-and-differentiation-00
> in IETF112 BIER session.
> Thanks.
> Jeffrey
> Juniper Business Use Only
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier
>
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier
>