SPRING WG,
The current text in draft-ietf-spring-segment-routing-09 regarding the
"Strict Shortest Path" algorithm reads as follows.
o "Strict Shortest Path": This algorithm mandates that the packet is
forwarded according to ECMP-aware SPF algorithm and instruct any
router in the path to ignore any possible local policy overriding
SPF decision. The SID advertised with "Strict Shortest Path"
algorithm ensures that the path the packet is going to take is the
expected, and not altered, SPF path.
One example of a local policy that overrides the ECMP-aware SPF algorithm
decision is a limit
on the number of ECMP next-hops. The text above implies that if a router
places any
limit on the number of ECMP forwarding next-hops then it would be wrong for it
to advertise
the "Strict Shortest Path" algorithm capability.
Is this the intended interpretation?
If not, what is the intended interpretation?
Thanks,
Chris
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