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D-Link DWS-1008 CLI Manual 60
clear fdb
Deletes an entry from the forwarding database (FDB).
Syntax: clear fdb {perm | static | dynamic | port port-list} [vlan vlan-id] [tag tag-value]
perm Clears permanent entries. A permanent entry does not age out and remains
in the database even after a reboot, reset, or power cycle. You must specify
a VLAN name or number with this option.
static Clears static entries. A static entry does not age out, but is removed from
the database after a reboot, reset, or power cycle. You must specify a VLAN
name or number with this option.
dynamic Clears dynamic entries. A dynamic entry is automatically removed through
aging or after a reboot, reset, or power cycle. You are not required to specify
a VLAN name or number with this option.
port port-lis Clears dynamic entries that match destination ports in the port list. You are
not required to specify a VLAN name or number with this option.
vlan vlan-id VLAN name or number—required for removing permanent and static entries.
For dynamic entries, specifying a VLAN removes entries that match only
that VLAN. Otherwise, dynamic entries that match all VLANs are removed.
tag tag-value VLAN tag value that identifies a virtual port. If you do not specify a tag
value, MSS deletes only entries that match untagged interfaces. Specifying
a tag value deletes entries that match only the specified tagged interface.
Defaults: None.
Access: Enabled.
Usage: You can delete forwarding database entries based on entry type, port, or VLAN. A VLAN
name or number is required for deleting permanent or static entries.
Examples: The following command clears all static forwarding database entries that match VLAN
blue:
dws-1008# clear fdb static vlan blue
success: change accepted.
The following command clears all dynamic forwarding database entries that match all VLANs:
dws-1008# clear fdb dynamic
success: change accepted.
The following command clears all dynamic forwarding database entries that match ports 3 and
5:
dws-1008# clear fdb port 3,5
success: change accepted.