Tony,
On 28/07/2021 22:06, Tony Li wrote:
Les,
ASLA exists to support the advertisement of attributes which can be
used in application specific ways.
Why do we need separate and different copies of attributes for different
applications?
The SRLG tries to capture the risk relationships between multiple links.
Those relationships don’t change depending on the application.
SRLG may mean many things - same optical infrastructure, same site, same
area, same city. For LFA you may want to use the "same optical
infrastructure", you don't care about the rest. For flex-algo primary
path you may care about same same site, same area, same city to provide
diverse primary path.
thanks,
Peter
Link attributes don’t require the variability that ASLA provides, and
the overhead is high. How does this cost/benefit ratio make sense?
In any particular deployment case, a given attribute advertisement
might be used by one app, multiple apps, or all apps.
ASLA allows to unambiguously support all of these cases with a single
advertisement encoding format.
The correct question to be resolving here is indeed the question which
has been discussed in an earlier thread: Is Generic Metric a link
attribute which can have application specific use cases? I think the
question to that is unquestionably “yes”.
That should be enough (IMO of course) to close the discussion.
Well, one nice thing is that there is an entire space of metrics
available. If application A wants to use metric 16 and application B
wants to use metric 122, that’s already doable.
Why do we need a separate space per application????
Tony
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