Fortinet FortiSwitch-548B v. 5.2.0.2 Administration Manual page 324

Syntax
clear dns [counter | cache]
counter - this command clear the DNS statistics.
cache - this command clear all entries from the DNS cache.
Default Setting
None
Command Mode
Privileged Exec
7.17.1.9 clear cdp
This command is used to clear the CDP neighbors information and the CDP packet counters.
Syntax
clear cdp [traffic]
traffic - this command is used to clear the CDP packet counters.
Default Setting
None
Command Mode
Privileged Exec
7.17.1.10 clear vlan
This command resets VLAN configuration parameters to the factory defaults.
Syntax
clear vlan
Default Setting
None
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