622 | Layer 2w w w . d e l l . c o m | s u p p o r t . d e l l . c o m Set the Aging Time for Dynamic EntriesLearned MAC addresses are entered in the table as dynamic entries, which means that they are subject toaging. For any dynamic entry, if no packet arrives on the switch with the MAC address as the source ordestination address within the timer period, the address is removed from the table. The default aging timeis 1800 seconds.Set the Aging Time for Dynamic Entries on a VLANSet the Aging Time for Dynamic Entries on a VLAN is available only on platform: eConfigure a Static MAC AddressA static entry is one that is not subject to aging. Static entries must be entered manually:Task Command Syntax Command ModeDisable MAC address aging for all dynamicentries.mac-address-table aging-time 0 CONFIGURATIONSpecify an aging time. mac-address-table aging-time secondsRange: 10-1000000CONFIGURATIONTask Command Syntax Command ModeSpecify an aging time. mac-address-table aging-time secondsRange: 1-1000000 INTERFACE VLANFTOS Behavior: The time elapsed before the configured MAC aging time expires is not precisely as configured.For example, the VLAN configuration mac-address-table aging-time 1 does not remove dynamic entries from theCAM after precisely 1 second. The actual minimum aging time for entries is approximately 5 seconds because thisis the default MAC address table scanning interval. Therefore, MAC aging configurations of less than 5 seconds,as in this example, might be ineffective. Configuring mac-address-table station-move time-interval 500 solves thislimitation. Reducing the scanning interval to the minimum, 500 milliseconds, increases the detection speed, whichresults in FTOS clearing entries closer to the actual desired aging time.Task Command Syntax Command ModeCreate a static MAC address entry in the MAC address table. mac-address-table static CONFIGURATION
