User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
7-3
C
ONFIGURING
FDB E
NTRIES
H
OW
FDB E
NTRIES
G
ET
A
DDED
Entries are added into the FDB in the following two ways:
• The switch can learn entries. The system updates its FDB with the source MAC
address from a packet, the VLAN, and the port identifier on which the source packet
is received.
• You can enter and update entries using a MIB browser, an SNMP Network Manager,
or the command-line interface (CLI).
A
SSOCIATING A
Q
O
S P
ROFILE WITH AN
FDB E
NTRY
You can associate a QoS profile with a MAC address (and VLAN) of a device that will
be dynamically learned. The FDB treats the entry like a dynamic entry (it is learned, it
can be aged out of the database, and so on). The switch applies the QoS profile as soon
as the FDB entry is learned.
For more information on QoS, refer to Chapter 9.
C
ONFIGURING
FDB E
NTRIES
To configure entries in the FDB, use the commands listed in Ta b le 7 - 1 .
Table 7- 1: FDB Configuration Commands
Command Description
clear fdb {<mac_address> | vlan <name> |
<portlist>}
Clears dynamic FDB entries that match the filter.
When no options are specified, the command
clears all FDB entries.
config fdb agingtime <number> Configures the FDB aging time. The range is 15
through 1,000,000 seconds. The default value is
300 seconds. A value of 0 indicates that the entry
should never be aged out.