Robert,

> Can anyone explain how do I map generic metric to selected network 
> applications I am to run in the network ?

Which application uses which metric type is defined by the application.
For example in flex-algo FAD defines which metric-type its going to use.
In SR-TE, the constraint list specifies which metric-type it is going to use.



Rgds
Shraddha



Juniper Business Use Only
From: Robert Raszuk <[email protected]>
Sent: Friday, July 30, 2021 6:20 PM
To: Van De Velde, Gunter (Nokia - BE/Antwerp) <[email protected]>
Cc: Peter Psenak <[email protected]>; Shraddha Hegde <[email protected]>; 
Les Ginsberg (ginsberg) <[email protected]>; Tony Li <[email protected]>; 
[email protected]
Subject: Re: [Lsr] Generic metric: application-specific vs 
application-independent

[External Email. Be cautious of content]

Hey Gunter,

> It doesn't make sense to have Application specific values if a particular 
> metric is obtained only dynamically,

It sure does.

Please notice what ASLA RFCs say up front in the abstract. ASLA is useful for:

A) application- specific values for a given attribute

AND

B) indication of which applications are using the advertised value for a given 
link.


It does not matter if the value is same or different ... what matters is 
automated and consistent indication which of my applications given new metric 
applies to.

I already mentioned this to Ron here:  
https://mailarchive.ietf.org/arch/msg/lsr/OgGLI8yezUDWU-EZePoIj6y6ENk/<https://urldefense.com/v3/__https:/mailarchive.ietf.org/arch/msg/lsr/OgGLI8yezUDWU-EZePoIj6y6ENk/__;!!NEt6yMaO-gk!Tny8sU7cmjqLAbDVnliN7lck7J4tCBAHr10i3CW2G9oviUWo8b2RTJxCXc0gvWOz$>

Can anyone explain how do I map generic metric to selected network applications 
I am to run in the network ?

Thx,
Robert.


On Fri, Jul 30, 2021 at 11:05 AM Van De Velde, Gunter (Nokia - BE/Antwerp) 
<[email protected]<mailto:[email protected]>> wrote:
A little late in the discussion... (PTO events do happen)

a quick opinion on the below discussion on whether Generic metric sub-tlv 
should be encoded on a ASLA or not.
For me, it depends on how the metric for the corresponding metric-type is 
obtained and if it can be configured (static).
It doesn't make sense to have Application specific values if a particular 
metric is obtained only dynamically, for eg, dynamically measured delay is 
going to be same for all applications.
On the contrary, te-metric can be configured, and we can in principle configure 
different values for different applications.

My opinion is that if any of the metric-types in the Generic metric sub-tlv can 
be configured, it should be inside the ASLA.

G/
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