Different solutions

• Gateway Backup Mode : If connection to the first gateway fails, the workstation will try to connect to the second one. A fail condition only exists when the VTD/8 Gateway is unreachable (for example router down, gateway stopped or defective…) and not when the gateway is full (all sessions in use). In the latter case only a clustered VTD/8 Gateway will re-route the workstation to another gateway.
   
  
• Gateway Re-routing Mode : This is only supported on workstations using MMR’s VGP protocol towards clustered VTD/8 Gateways. Once a workstation is connected to a clustered gateway, the TM tries to identify that workstation in function of his user name. If the user has the permission to pass via other gateways and all other transfer conditions met, the gateway will sent to that workstation a re-route command including the name of the new gateway to connect to. At that moment the workstation will disconnect from the first gateway and re-connects to the next one. From this point, several options exist :
   
  
  • Specific Gateway : This option allows you to configure a dedicated gateway for a specific 'Device Family' (E.g. DKU, VIP, ...) of a user. The VTD/Amaril session will be re-routed to that specific gateway.
  • None : Nothing happens, the VTD/Amaril session stays on its 'home gateway'. If this gateway is full, it gets an error message.
  • High Availability : This option allows you to re-route a VTD/Amaril session to another gateway if the 'home gateway' is full. The destination gateway is the one having the most sessions free at that moment. In worst case situations it will be the gateway having a VIRGA Disk.
  • Load Leveling : This option allows you to re-route a VTD/Amaril session to a gateway having the lowest charge. Generally, the lowest charge can be found on gateways having the lowest number of connected users.