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Document No. 650-100-700, Issue 1 9-13
Managing the Address Forwarding Table
3. Click:
■
APPLY to save your changes
■
CANCEL to restore previous settings
■
Delete All Learned Entries if you want to relearn the entire table
■
Delete Invalid Learned Entries if you want to delete all entries
that are currently aged out.
* Note: If you change the Hash Table Size, the switch relearns all
addresses in that table, causing the switch to flood packets for
a few seconds.
Controlling Re-
configuration of
AFT Sizes Using
the Web Agent
To manually control reconfiguration of AFT sizes using the Web Agent:
1. Select Configuration from the L2 Switching > Address Forwarding
Table group in the Web Agent window. The Address Forwarding
Table Configuration dialog box opens (
Figure 9-2 ).
2. Enter a new Auto-Sizing Utilization Threshold percentage in the
Threshold (Util%) field, if you just want to cause the table
reconfiguration to occur at a different level of usage efficiency. The
default value of 40% is recommended for most applications.
* Note: Raising the value in the Threshold (Util%) field might
cause the table to be relearned more frequently, and
makes address space usage more efficient.
Controlling
Reconfiguration of
AFT Sizes Using
the CLI
To manually control reconfiguration of AFT sizes using the CLI, enter the
following command in Enable/Configure mode:
(configure)# set aft auto-sizing-threshold
Searching the Switch AFT
The AFT can hold 24,000 entries on each switch. The switch Web Agent
provides a utility that allows you to filter which addresses it displays,
making the list more manageable. Multiple criteria can be selected to
produce a sophisticated filter. The parameters are treated as “ands,”
meaning that displayed addresses must meet all selected criteria.
You can search the AFT using the Web Agent or the CLI.