Commits on Jan 18, 2024

1. [chassis] Support advertisement of Loopback0 of all LC's across all e… …

   …-BGP peers in TSA mode (sonic-net#16714)
   
   What I did:
   In Chassis TSA mode Loopback0 Ip's of each LC's should be advertise through e-BGP peers of each remote LC's
   
   How I did:
   
   - Route-map policy to Advertise own/self Loopback IP to other internal iBGP peers with a community internal_community as define in constants.yml
   - Route-map policy to match on above internal_community when route is received from internal iBGP peers and set a internal tag as define in constants.yml and also delete the internal_community so we don't send to any of e-BGP peers
   - In TSA new route-map match on above internal tag and permit the route (Loopback0 IP's of remote LC's) and set the community to traffic_shift_community.
   - In TSB delete the above new route-map.
   
   How I verify:
   
   Manual Verification
   
   UT updated.
   sonic-mgmt PR: sonic-net/sonic-mgmt#10239
   
   Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>

   

   abdosi committed Jan 18, 2024
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