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Examples of Configuring VLANs and Hash Table Size

Example 1

All VLANs have the same Hash Table Size

Configure the Avaya Multiservice switch for 45 VLANs. This requires the default Hash Table size be reduced according to the hash table guidelines.

45 VLANs times 1024 = 46,080 or ~ 46K

This exceeds the 20K guideline for the amount of AFT memory used for Hash Tables. Even if the Hash Table size is reduced by half, it still exceed the guideline. In order to comply with the guideline, the Initial Hash Table Size for each VLAN should be 256 or less. 45 VLANs times 256 = 11,520 or ~ 12K This leaves 48K for AFT entries (60K - 12K = 48K).


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