If at least one gateway can be reached, the gateway information is refreshed every 10 minutes. It is refreshed every minute if no gateways are reached.
When the gateway list is refreshed, a null RPC is sent to each gateway to verify that it is active. The list of active gateways is then used to update the existing round robin list, adding or removing gateways as appropriate.
If a gateway is down for a lengthy period, it will take 10 minutes for it to be discovered again (when it is brought back online). It also takes 10 minutes to discover new gateways unless all are down (in this case, it takes one minute).
Retrieving data ...