Managing Address Forwarding Tables (Layer 2 & Layer 3)

3.In the Super Age Time field, enter a new value. The Super Age Timer marks all invalid table entries, then checks to see if they remain invalid for the specified super age interval. This clears the table of entries that are no longer used. The default value is 7 days.

4.Click APPLY to save your changes, or CANCEL to restore previous settings.

Controlling Reconfiguration of Address Table Sizes

Each VLAN you define creates a separate version of the switch address forwarding table. When these address tables become large, they may begin to use address space inefficiently.

If you leave the switch in its default state, it will adjust for growth automatically. However, this will lead to a few seconds of flooding packets when the address table reconfigures.

To manually control when a flood event occurs:

1.In the Address Forwarding Table section of the Web Agent window, click Table Configuration. The Address Forwarding Table Configuration dialog box opens.

2.Enter a new Auto-Sizing Utilization Threshold percentage, 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. Raising the value might cause the table to be relearned more frequently, and will make address space usage more efficient.

3.In the Instance IDs column, click the ID number to achieve finer control of particular tables. The Address Table Instance dialog box opens for the instance ID selected.

Table 14-1.Address Table Instance Parameters

Parameter

Definition

 

 

VLAN Association

Displays the associated VLAN switch port and opens the

 

VLAN Switch Port dialog box.

 

 

Total Number of Entries

Displays the total number of entries for this VLAN.

 

 

Entry Type

Displays the entry type for this VLAN.

 

Options include:

 

•

Learned - Entry is dynamically learned.

 

•

Management - Entry is configured by the user

 

 

statically.

 

•

Self - Entry is the switch’s own address

 

 

 

14-2

Cajun P550/P220 Switch Operation Guide