LaveenBrcm

[nbrmgr] Interface cache for Neighbor refresh

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**What I did** Added Interface cache in nbrmgrd to handle neighbor refresh Nbrmgrd subscribes to Interface Table events and adss/deletes interface cache ==> Interface to IPAddr list info, whenever ip...

**What I did** Added Refresh Timer functionality in Nbrmgr. **Why I did it** Please refer https://github.com/sonic-net/SONiC/pull/1043

**What I did** Added neighbor cache in nbrmgrd to handle neighbor refresh Neighsyncd receives neighbor table events from kernel and adds the neighbor in NEIGH_REFRESH_TABLE. Nbrmgrd subscribes NEIGH_REFRESH_TABLE events and...

Neigh refresh

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Neighbor Refresh HLD. Neighbor refresh proposal to replace existing arp_update script [ sonic-buildimage/files/scripts/arp_update ] | Repo | PR Title | State | | :--------: | :------------------------------------------: | :---------: | |...

https://github.com/sonic-net/SONiC/pull/1043