Re: [Mpls-interop] PST.ppt

[Loa Andersson <[e-mail]>]

Arian,

where is "halfway down the tunnel - between PE1 and PE2 (counting from
left and between PE3 and PE4? I would agree to that, but between PE2 and
PE3 we are "out of the tunnel" - given that I understand what is said
what I can see from the picture. Right?



Adrian Farrel wrote:
> Loa,
> 
> You can protect a tunnel or an end-to-end LSP
> However, halfway down a tunnel, you can only protect the tunnel (because
> you can't see the content)
> 
> A
> ----- Original Message ----- From: "Loa Andersson" <[e-mail]>
> To: "Adrian Farrel" <[e-mail]>
> Cc: "Sprecher, Nurit (NSN - IL/Hod HaSharon)" <[e-mail]>om>;
> <[e-mail]>nl>; "Weingarten, Yaacov (NSN - IL/Hod HaSharon)"
> <[e-mail]>om>; <[e-mail]>
> Sent: Wednesday, December 03, 2008 2:08 PM
> Subject: Re: PST.ppt
> 
> 
>> Adrian,
>>
>>
>> Adrian Farrel wrote:
>>>> I don't think that it should any different.
>>>
>>> Good
>>>
>>>> So 2nd PE from the left pops the tunnel label and swaps the inner
>>>> label and then pushes the new tunnel label. Is that what you say?
>>>
>>> Yup. Normal LSR behavior.
>>>
>>>> Same for the 3rd PE?
>>>
>>> Why would this be any different from normal LSR behavior?   :-)
>>
>> I don't look for or hope for any difference ;).
>>
>> Assuming there is a PST from the 3rd to the 4th PE also?
>>
>> What is protected from e.g. 3rd PE to the 4th PE the entire containing
>> tunnel or the each separate contained tunnel?
>>
>> /Loa
>>
>>>
>>> A
>>>
>>>> Adrian Farrel wrote:
>>>>> Loa,
>>>>>
>>>>> Why would this be any different from normal LSR behavior?
>>>>>
>>>>> P1 sees only the PST labels
>>>>> PEs pop the PST label and see the e2e label and process it as normal.
>>>>>
>>>>> Cheers,
>>>>> Adrian
>>>>> ----- Original Message ----- From: "Loa Andersson" <[e-mail]>
>>>>> To: "Sprecher, Nurit (NSN - IL/Hod HaSharon)" <[e-mail]>
>>>>> Cc: "Adrian Farrel" <[e-mail]>uk>; <[e-mail]>nl>;
>>>>> "Weingarten, Yaacov (NSN - IL/Hod HaSharon)"
>>>>> <[e-mail]>om>; <[e-mail]>
>>>>> Sent: Wednesday, December 03, 2008 12:41 PM
>>>>> Subject: Re: PST.ppt
>>>>>
>>>>>
>>>>>> Nurit,
>>>>>>
>>>>>> ok fine, however ...
>>>>>>
>>>>>> In your figure will the  2nd and 3rd PEs label swap the label on
>>>>>> E2E tunnels LSP? Or is the same label showing up at the  4th PE?
>>>>>>
>>>>>> /Loa
>>>>>>
>>>>>> Sprecher, Nurit (NSN - IL/Hod HaSharon) wrote:
>>>>>>> Oops......my mistake.......here is the updated figure......
>>>>>>>
>>>>>>> The intention was to refer to a SS-PW. Accidentally I referred to
>>>>>>> T-PE
>>>>>>> and S-PE.
>>>>>>>
>>>>>>> We can provide also another figure for the MS-PW case.
>>>>>>>
>>>>>>> Note also that the figure is adapted with the new term - PST
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: ext Loa Andersson [mailto:[e-mail]]
>>>>>>> Sent: Wednesday, December 03, 2008 14:21
>>>>>>> To: Sprecher, Nurit (NSN - IL/Hod HaSharon)
>>>>>>> Cc: Adrian Farrel; [e-mail]; Weingarten, Yaacov (NSN -
>>>>>>> IL/Hod
>>>>>>> HaSharon); [e-mail]
>>>>>>> Subject: PST question: Was (Re: [Mpls-interop] Who will be in
>>>>>>> Geneva?)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Renaming the thread - a little late but anyway ...
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> at risk asking the obvious, since I'm still reading through the
>>>>>>>
>>>>>>> thread?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Nurit,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> In your figure will the S-PEs label swap the label on
>>>>>>>
>>>>>>> E2E tunnels LSP? Or is the same label showing up at the
>>>>>>>
>>>>>>> second T-PE?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> /Loa
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Sprecher, Nurit (NSN - IL/Hod HaSharon) wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>
>>>>>>>> I agree that we need to find a better name......
>>>>>>>
>>>>>>>> What about the figure in the second slide of the attached?
>>>>>>>
>>>>>>>> If multiple LSPs transmit via the same physical path in the first
>>>>>>> domain
>>>>>>>
>>>>>>>> and have the same constraints, why cannot we aggregate them and run
>>>>>>> OAM
>>>>>>>
>>>>>>>> per the aggregated in the first domain?
>>>>>>>
>>>>>>>> Best regards,
>>>>>>>
>>>>>>>> Nurit
>>>>>>>
>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>
>>>>>>>> From: ext Adrian Farrel [mailto:[e-mail]]
>>>>>>>
>>>>>>>> Sent: Tuesday, December 02, 2008 11:20
>>>>>>>
>>>>>>>> To: [e-mail]; Sprecher, Nurit (NSN - IL/Hod HaSharon)
>>>>>>>
>>>>>>>> Cc: ext Ben Niven-Jenkins; [e-mail]
>>>>>>>
>>>>>>>> Subject: Re: [Mpls-interop] Who will be in Geneva?
>>>>>>>
>>>>>>>
>>>>>>>> Hi Huub.
>>>>>>>
>>>>>>>
>>>>>>>>> The TC aggregate is not a TC anymore, it should IMHO be referred
>>>>>>>
>>>>>>>>> to as a tunnel.
>>>>>>>
>>>>>>>
>>>>>>>> Yes!
>>>>>>>
>>>>>>>
>>>>>>>> Which is not to say that it is not a useful construct for reducing
>>>>>>>> OAM
>>>>>>>
>>>>>>>
>>>>>>>> overhead.
>>>>>>>
>>>>>>>
>>>>>>>> I think (OK, I know) that I suggested we avoid using the TC
>>>>>>>> language
>>>>>>> as
>>>>>>>
>>>>>>>> I
>>>>>>>
>>>>>>>> thought we would find it unhelpful. Perhaps when we meet to go
>>>>>>>> through
>>>>>>>
>>>>>>>> this,
>>>>>>>
>>>>>>>> we can draw pictures and work out the language later?
>>>>>>>
>>>>>>>
>>>>>>>> A
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>
>>>>>>>> Mpls-interop mailing list
>>>>>>>
>>>>>>>> [e-mail]
>>>>>>>
>>>>>>>> https://www.ietf.org/mailman/listinfo/mpls-interop
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> -- 
>>>>>>
>>>>>>
>>>>>> Loa Andersson                         email:
>>>>>> [e-mail]
>>>>>> Sr Strategy and Standards Manager            [e-mail]
>>>>>> Redback Networks                      phone: [phone]
>>>>>> An Ericsson Company
>>>>>
>>>>>
>>>>
>>>>
>>>> -- 
>>>>
>>>>
>>>> Loa Andersson                         email: [e-mail]
>>>> Sr Strategy and Standards Manager            [e-mail]
>>>> Redback Networks                      phone: [phone]
>>>> An Ericsson Company
>>>
>>>
>>
>>
>> -- 
>>
>>
>> Loa Andersson                         email: [e-mail]
>> Sr Strategy and Standards Manager            [e-mail]
>> Redback Networks                      phone: [phone]
>> An Ericsson Company 
> 
> 


-- 


Loa Andersson                         email: [e-mail]
Sr Strategy and Standards Manager            [e-mail]
Redback Networks                      phone: [phone]
An Ericsson Company
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