Symptoms
ACI - 3.x or below
In case of incorrect external route & ping issue to external device
Solution
Upgrade to recommended code or try following:
Step -1: Login in ACI-Leafs where EP located & boarder leafs
Step -2: type "vsh" (without quote)
Step -3: try following command on leafs where EP connected & boarder leads (safe in production environment)
Leaf-X#clear system internal epm endpoint key vrf TENANT-Test:VRF-Test 192.168.168.168 (problem devices IP (SRC/DST both)