6-4
C
6: S
HAPTER
WITCH
Removing FDB
Entries
Table 6-2 Removing FDB Entry Commands
Command
delete fdbentry <mac_address> vlan <name>
clear fdb {all | <mac_address> | vlan <name>
| <portlist>}
F
D
(FDB)
ORWARDING
ATABASE
portlist — displays the entries for one or more ports
permanent — displays all permanent entries
The following sample output shows the information displayed when
you request output for all FDB entries:
show fdb
Hash
Num
------------------------------------------------------------
0f00: 0 ff:ff:ff:ff:ff:ff
3289: 0 00:e0:2b:00:00:00
373d: 0 01:80:c2:00:00:00
72f3: 0 00:e0:2b:00:a4:00
Total: 4 Static: 4 Perm: 0 Dyn: 0 Dropped: 0
FDB Aging time: 300
The show command displays summary information, including
MAC address
VLAN name and VLANid
Entry method (dynamic/static/permanent)
Port
You can remove one or more specific entries from the FDB, or you can
clear the entire FDB of all entries by using the commands listed in
Table 6-2.
Mac
Vlan
Default(0001)
Default(0001)
Default(0001)
Description
Allows you to delete a permanent FDB entry.
Allows you to clear dynamic FDB entries that match
the filter. Use the keyword "all" to clear all
dynamic entries.
Flags
Ptag
sm
0fef
sm
0ffb
(0000)
sm
0ffb
sm
0ff1
Portlist
CPU
CPU
CPU
CPU
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