Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 546
Set the Aging Time for Dynamic Entries, Set the Aging Time for Dynamic Entries on a VLAN, Con
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www.dell.com | support.dell.com Set the Aging Time for Dynamic Entries Learned MAC addresses are entered in the table as dynamic entries, which means that they are subject to aging. For any dynamic entry, if no packet arrives on the switch with the MAC address as the source or destination address within the timer period, the address is removed from the table. The default aging time is 1800 seconds. Task Command Syntax Command Mode Disable MAC address aging for all dynamic entries. mac-address-table aging-time 0 Specify an aging time. mac-address-table aging-time seconds Range: 10-1000000 CONFIGURATION CONFIGURATION Set the Aging Time for Dynamic Entries on a VLAN e Set the Aging Time for Dynamic Entries on a VLAN is available only on platform: Task Specify an aging time. Command Syntax mac-address-table aging-time seconds Range: 1-1000000 Command Mode INTERFACE VLAN FTOS 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 the CAM after precisely 1 second. The actual minimum aging time for entries is approximately 5 seconds because this is 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 this limitation. Reducing the scanning interval to the minimum, 500 milliseconds, increases the detection speed, which results in FTOS clearing entries closer to the actual desired aging time. Configure a Static MAC Address A static entry is one that is not subject to aging. Static entries must be entered manually: Task Create a static MAC address entry in the MAC address table. Command Syntax mac-address-table static Command Mode CONFIGURATION 546 | Layer 2
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