Hello All !
Just an update about this case. I think I figure out what happen.
All drops on TCP/UDP trafic occurs for IP destination devices that do not exist any more (unreachable), but the SNMP (or TCP) polling were still active for these devices. We don't see any drops for reachable devices
As the destination MAC address is unknow, the packet hits the RE and the packet is drop according to the TERM DISCARD-UDP.
If this is true it means that all unknow mac-address packet hit the RE. Do you know something about about ?
Regards,
Salah