Re: [Detnet-dp-dt] a quick look at the replication/discarding case for detnet flows

[Loa Andersson <[e-mail]>]

Jouni,

Sure - it should work just fine, but one more label in the stack that 
has to be popped at the the S-PE and T-PE. I don't know the limits of
labels in the stack that need to be popped, anyone tht have "hard"
information.

/Loa

On 2017-01-23 09:40, Jouni Korhonen wrote:
> Loa,
>
> It is just that the solution has to work even if php does not take place.
>
> - JOuni
>
>
> --
> Jouni Korhonen, Broadcom Ltd.
> M: [phone]
>
>> On Jan 21, 2017, at 9:26 PM, Loa Andersson <[e-mail]> wrote:
>>
>> Jouni,
>>
>> Depends on what you mean by " not always necessarily done", php is done by default but can be turned off. I see no reason to turn it of, at
>> least not if we are concerned for the depth of the label stack.
>>
>> /Loa
>>
>> On 2017-01-22 00:27, Jouni Korhonen wrote:
>>> Loa,
>>>
>>> Ok. Thanks.  I think we also need to make clear that php is not always
>>> necessarily done.
>>>
>>> Jouni
>>>
>>> Sent from a smart phone.. Mind the typos..
>>>
>>>> On Jan 20, 2017, at 21:25, Loa Andersson <[e-mail]> wrote:
>>>>
>>>> Jouni,
>>>>
>>>>
>>>>> On 2017-01-21 10:47, Jouni Korhonen wrote:
>>>>> Loa,
>>>>>
>>>>> Thanks for the slides. The slide 9 is exactly what I was after with my e2e PW labels. Now the question: “I don’t know if there is currently enough capabilities in LDP to merge, unless we merge all traffic with the same FEC on the same outgoing outer label.” I cannot claim expertise in LDP
>>>>
>>>> If you have the same forwarding class and destination (part of the FEC
>>>> defintion) LDP will merge. This mean that all detnet traffic from one
>>>> node will arrive at D on the same (transport) LSP. I think this is fine
>>>> since the label for that LDP is php'ed.
>>>> to be able to have any kind of educated view here. So if we are not
>>>> going to be able to merge we would “waste” additional transport label
>>>> between C->D?
>>>>
>>>> Yes but that is a label that will be unique for a link, we are not
>>>> running into problems until we start trying to use domaion wide unique
>>>> labels.
>>>>
>>>> Duplicated would have been eliminated, thus there is no bandwidth impact.
>>>>
>>>> Correct!
>>>>
>>>> I do not think that would be an issue. It is no optimal but works.
>>>>
>>>> Well - I guess we could find some minor optimizations, but this wuth
>>>> merging and php this is close to optimal.
>>>>
>>>> /Loa
>>>>>
>>>>> - Jouni
>>>>>
>>>>>
>>>>> --
>>>>> Jouni Korhonen, Broadcom Ltd.
>>>>> M: [phone]
>>>>>
>>>>>> On Jan 13, 2017, at 8:28 PM, Loa Andersson <[e-mail]> wrote:
>>>>>>
>>>>>> Folks,
>>>>>>
>>>>>> I took a quick look at the replication / discarding case we talked about at the meeting this week.
>>>>>>
>>>>>> Please remember that so far this is not a proposal, just a demonstration
>>>>>> that there is at least one way of doing it.
>>>>>>
>>>>>> What is there can bee revised, improved, changed or discarded if we
>>>>>> find something better. Take a look a send comments.
>>>>>>
>>>>>> /loa
>>>>>>
>>>>>> Warning: I have a grave case of dyslexia, so any odd or inventive
>>>>>> spelling is pure accident.
>>>>>> --
>>>>>>
>>>>>>
>>>>>> Loa Andersson                        email: [e-mail]
>>>>>> Senior MPLS Expert                          [e-mail]
>>>>>> Huawei Technologies (consultant)     phone: [phone]
>>>>>> <detnet-replication.pptx>_______________________________________________
>>>>>> Detnet-dp-dt mailing list
>>>>>> [e-mail]
>>>>>> https://www.ietf.org/mailman/listinfo/detnet-dp-dt
>>>>>
>>>>
>>>> --
>>>>
>>>>
>>>> Loa Andersson                        email: [e-mail]
>>>> Senior MPLS Expert                          [e-mail]
>>>> Huawei Technologies (consultant)     phone: [phone]
>>>
>>> _______________________________________________
>>> Detnet-dp-dt mailing list
>>> [e-mail]
>>> https://www.ietf.org/mailman/listinfo/detnet-dp-dt
>>>
>>
>> --
>>
>>
>> Loa Andersson                        email: [e-mail]
>> Senior MPLS Expert                          [e-mail]
>> Huawei Technologies (consultant)     phone: [phone]
>
> _______________________________________________
> Detnet-dp-dt mailing list
> [e-mail]
> https://www.ietf.org/mailman/listinfo/detnet-dp-dt
>

-- 


Loa Andersson                        email: [e-mail]
Senior MPLS Expert                          [e-mail]
Huawei Technologies (consultant)     phone: [phone]