Hash Table guidelines for creating VLANs

Maximum Number of VLANs

In order to support the maximum number of VLANs, VLAN ID numbers should be chosen from the range of 1 to 1000. The numbering of VLANs has no impact on memory usage within the switch. The numbering of VLANs only effects the total number of supported VLANs. This is not a memory usage issue, however, it does effect the way the switch uses or Hashes VLAN ID's. If VLAN ID's are used outside of the range of 1 to 1000, there is a possibility of unavailable VLAN ID's. This again does not effect switch memory usage. If VLANs are already created with VLAN ID's outside of the 1-1000 range, there is no need to reassign new VLAN ID's. The only potential issue could be particular VLAN ID's might not be available.