[neighsync] bug: VXLAN EVPN neighbors not in NEIGH_TABLE #3478
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VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue sonic-net#3384. The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database: https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors. Signed-off-by: Brad House (@bradh352)
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VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue sonic-net#3384. The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database: https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors. Signed-off-by: Brad House (@bradh352)
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VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue sonic-net#3384. The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database: https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors. Signed-off-by: Brad House (@bradh352)
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VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue sonic-net#3384. The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database: https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors. Signed-off-by: Brad House (@bradh352)
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VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue sonic-net#3384. The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database: https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors. Signed-off-by: Brad House (@bradh352)
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Why I did it
VXLAN EVPN learned routes are not entered into NEIGH_TABLE as per Issue #3384.
The EVPN VXLAN HLD specifically states this should be populated so it triggers an update to the SAI database:
https://github.com/sonic-net/SONiC/blob/master/doc/vxlan/EVPN/EVPN_VXLAN_HLD.md#438-mac-ip-route-handling
What I did
The reason it was not occurring is NOARP entries were being rejected, this patch adds an exception for externally learned neighbors (which have NOARP set).
How I verified it
Installed on a physical switch and observe remotely learned neighbors are present in NEIGH_TABLE
Details if related
Fixes #3384
Signed-off-by: Brad House (@bradh352)