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Added change not to create ECMP Group in SAI and program the route if none of ECMP members are active/link-up #3394

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@abdosi abdosi commented Nov 26, 2024

What I did:
Added change not to create ECMP Group in SAI and program the route if none of the ECMP members are active/link-up.

Why I did:
In scale setup of T2 it's possible all links can go down simultaneously which case we can get Route messages with all nexthops being in down state. In such case we might create empty Nexthop Group in SAI for the given route which causes not needed SAI call for Nexthop Group creation and also create traffic blackhole for the route where that route can still forward traffic via default route if eligible/applicable.

How I verify:

  1. Compile time test was failing because of this chnage so added oper_status as UP in the mock tests
  2. Added UT for this scenario.
  3. Ixia Convergence tests

all the members of ECMP groups are inactive.

Signed-off-by: Abhishek Dosi <[email protected]>
@abdosi abdosi requested a review from prsunny as a code owner November 26, 2024 02:49
@abdosi abdosi requested review from prsunny and removed request for prsunny November 26, 2024 02:50
@abdosi abdosi changed the title Added change not to create ECMP Group in SAI and program the route if not of ECMP members are active/link-up Added change not to create ECMP Group in SAI and program the route if none of ECMP members are active/link-up Nov 26, 2024
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