Avaya Cajun P550R User Manual page 201

Table 6-1. Address Table Instance Parameters continued
Parameter
Hash Table
Bucket Info
Cajun P550/P880/P882 Switch User Guide
Definition
Select one of the following hash table parameters:
Size - Select the size to alter the space available for this
Note:
address table. The selection range is 16 addresses to 8192
addresses. The rule of thumb is: Tables with high Total
Bucket Utilization (greater than 75%) can be made
smaller. Tables with low Total Bucket Utilization (less
than 40%) should be made larger.
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. It is recommended that
the hash table size be 1/8th the size of the total number
of addresses for the VLAN.
• Auto Increment - Select an option to allow the Hash
tables to grow dynamically larger if more addresses are
discovered. The options are:
True _ Enables auto-increment of the Hash tables.
False - Disables auto-increment to prevent the Hash tables
from growing dynamically at the risk of extra flooding.
Displays parameters to monitor the efficiency of the hash table
allocations.
Options include:
• Count - Indicates the hash table count.
• Capacity - Indicates the hash table capacity.
• Utilization - High utilization indicates that a larger hash
table is needed.
5. 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.
Managing the Address Forwarding Table
The number
Note:
6-7