Re: [Detnet] Questions about the Networks in DetNet charter

My last paragraph related to my question fixed.

I noticed in the charter or RFC 8578 does not mention non ECMP routing as
deemed deterministic routing used in Detnet.

Thanks

Gyan

On Sun, Jun 28, 2020 at 6:01 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:

>
> I had a generic question related to the Detnet WG charter.
>
> So I understand the focus of latency and jitter time sensitive
> applications such as voice and video over any single administrative domain
> which is covers am any carriers network including RAN 4G/5G.  Am good with
> all that.
>
> To me the term “deterministic” from a network routing perspective
> historically precluded ECMP flow based load balancing or for example vxlan
> source port entropy IP ECMP load balancing.   Since IP ECMP load balancing
> is all flow based technically UDP voice and video flows are not impacted as
> IP ECMP is prevalent in most all providers and enterprises.  In the past,
> IP per packet load existed and that reeked havoc with voice and video UDP
> RTP based flows out of order packets.  Since then most vendors due to
> issues with per packet load balancing over multiple paths have been
> eliminated.
> In my mind anything other then per packet load balanced flows is
> deterministic.
>
> Deterministic routing I would think means in the simplest sense a non load
> balanced single path with no ECMP along the entire path.  Another way to
> look at is that you can see the flow along any hop in the path if you did a
> packet capture where non deterministic path for a flow that would not be
> possible.
>
> I noticed in the charter it does mention ECMP Verdi’s not or in RFC 8578.
>
> What does the deterministic mean in the context of the WG framework as it
> does not seem related to deterministic routing.
>
>
> Kind Regards
>
> Gyan
>
> On Sun, Jun 28, 2020 at 5:35 PM Janos Farkas <Janos.Farkas=
> 40ericsson.com@dmarc.ietf.org> wrote:
>
>> Hi Quan.
>>
>>
>>
>> This was my previous response.
>>
>>
>>
>> Best regards,
>>
>> Janos
>>
>>
>>
>> *From:* Janos Farkas
>> *Sent:* Monday, June 22, 2020 10:54 AM
>> *To:* xiong.quan@zte.com.cn
>> *Cc:* detnet-chairs@ietf.org; lberger@labn.net; gregory.mirsky@ztetx.com
>> *Subject:* RE: Questions about the Networks in DetNet charter
>>
>>
>>
>> Hi Quan.
>>
>>
>>
>> The main purpose of the cited sentence is to limit the scope of the work
>> to make it reasonable, i.e., not trying to boil the ocean. Actually, the
>> main message is that DetNet is not for the big I Internet, but for smaller
>> networks than that.
>>
>>
>>
>> Networks like mobile backhaul are definitely in scope of DetNet. It is
>> actually explicitly there in the DetNet Use Cases
>> https://tools.ietf.org/html/rfc8578#section-6.2.2.
>>
>>
>>
>> Best regards,
>>
>> Janos
>>
>>
>>
>> *From:* xiong.quan@zte.com.cn <xiong.quan@zte.com.cn>
>> *Sent:* Monday, June 22, 2020 4:29 AM
>> *To:* detnet-chairs@ietf.org; Janos Farkas <Janos.Farkas@ericsson.com>;
>> lberger@labn.net
>> *Cc:* gregory.mirsky@ztetx.com
>> *Subject:* Questions about the Networks in DetNet charter
>>
>>
>>
>> Dear Chairs,
>>
>>
>>
>> I noticed that in DetNet Charter, it mentions that the networks which WG
>> foucs on as following shown.
>>
>>
>>
>> "The Working Group will initially focus on solutions for networks that
>> are under a single administrative control or within a closed group of
>> administrative control; these include not only campus-wide networks but
>> also can include private WANs. The DetNet WG will not spend energy on
>> solutions for large groups of domains such as the Internet."
>>
>>
>>
>> Could you please clarify that the WAN  such as Metropolitan area network
>> and Mobile backhaul network is included in DetNet use case or not?
>>
>> And does the DetNet WG only focus on the small networks similier with TSN?
>>
>>
>>
>> Your reply is important and appreciated.
>>
>>
>>
>> Thanks,
>>
>> Quan
>>
>>
>>
>>
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>>
> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-134713101 Columbia Pike *Silver Spring, MD
>
> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *

*M 301 502-134713101 Columbia Pike *Silver Spring, MD