Symptom
/// after reload the DHCP snooping database in the switch never recovers its contents from the DHCP snooping database agent (example: ip dhcp snooping database flash:snooping-database-file.txt)
/// if ip arp inspection is being used, then after a reload most hosts will lose connectivity from network since ip arp inspection will not be able to find the DHCP clients within the DHCP database table
Conditions
/// issue is reproducible on a c9300 standalone switch on 16.9.2, 16.9.3
/// issue is independent from stack or non-stacked systems; in other words issue can occur on a stack or non-stacked system
/// c9300 standalone switch has NTP synchronized with its DHCP snooping database and its database is also saved in the flash of the switch, in theory NTP must be synchronized so that DHCP snooping database agent could work
/// before a reload is done verify the DHCP snooping database binding is saved on the switch and in the flash of the same c9300 switch
/// make sure the running-configuration was consistent before and after the reload
/// check the DHCP snooping database bindings and the bindings are not recovered from flash after the c9300 reloaded
Workaround
/// none known at this moment
Further Problem Description
