Avaya P580 - Manual (Page 244)

6-14 Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, Version v5.3.1
Chapter
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.
Hash Table Select one of the following hash table parameters:
Size - Select the size to alter the space available for this address
table. The selection range is 16 to 8192 incrementing in the
powers of 2.
Note: The number of addresses for a given hash table is 4:1 (for
example, if you have a hash table of 16 bytes, the VLAN
can hold 64 addresses in it’s table instance.
To achieve
optimal Bucket Utilization, Hash Table size should
be ¼ times the number of expected AFT entries
(MAC entries) on the VLAN.
Auto Increment - Select an option to allow the hash table to
grow dynamically larger if more addresses are discovered. The
options are:
True - Enables auto-increment of the hash table.
False - Disables auto-increment to prevent the hash table from
growing dynamically at the risk of extra flooding.
Bucket Info Displays parameters to monitor the efficiency of the hash table
allocations.
Options include:
• Count - The Total Number of Entries (MAC Addresses) for
that VLAN
• Capacity - Indicates bucket capacity.
• Utilization - The number of entries divided by the total
bucket capacity.
Table 6-5. Address Table Instance Parameters
Parameter Definition
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