Step 6 ClickSave Changes.
Configuring the Aging Time for the MAC Address Table

Aging Time for the MAC Address Table

Toefficiently switch packets between ports, the fabric interconnect maintains a MAC address table. It
dynamicallybuilds the MAC address table by using the MAC source address from the packets received and
theassociated port on which the packets were learned. The fabric interconnect uses an aging mechanism,
definedby a configurable aging timer, to determine how long an entry remains in the MAC address table. If
anaddress remains inactive for a specified number of seconds, it is removed from the MACaddress table.
Youcan configure the amount of time (age) that a MAC address entry (MAC address and associated port)
remainsin the MACaddress table.

Configuring the Aging Time for the MAC Address Table

Procedure
Step 1 Inthe Navigation pane, clickthe Equipment tab.
Step 2 Onthe Equipment tab, click the Equipment node.
Step 3 Inthe Work pane, click the Policies tab.
Step 4 Clickthe Global Policiessubtab.
Step 5 Inthe MAC AddressTable Aging area, complete the following fields:
DescriptionName
Thelength of timean idle MAC address remainsin the MAC address
tablebefore it is removed by Cisco UCS. This can be one of the
following:
Never—MACaddresses are never removed from the table
regardlessof how long theyhave been idle.
ModeDefault—The system uses the default value. If the fabric
interconnectis set to end-host mode, the default is 14,500 seconds.
Ifit is set to switching mode, the default is 300 seconds.
other—CiscoUCS Manager GUI displays the dd:hh:mm:ss field
whichallows you toenter a customvalue.
AgingTime field
Thelength of time a MAC address must remain idle before Cisco UCS
removesit from the MAC address table. This field is only visible if you
chooseother for the aging time.
Entera time in theformat days:hours:minutes:seconds.
dd:hh:mm:ssfield
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Configuring the Aging Time for the MAC Address Table