H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 375)

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it checks the primary server (if any) first and then the secondary servers in the order they are
configured.
{
When the primary server and secondary servers are all in blocked state, the device
communicates with the primary server. If the primary server is available, its statues changes to
active. Otherwise, its status remains to be blocked.
{
If one server is in active state but all the others are in blocked state, the device only tries to
communicate with the server in active state, even if the server is unavailable.
{
After receiving an authentication/accounting response from a server, the device changes the
status of the server identified by the source IP address of the response to active if the current
status of the server is blocked.
• Use a proper real-time accounting intervals according to the number of users.
Table 100 Recommended real-time accounting intervals
Number of users Real-time accounting interval (in minutes)
1 to 99 3
100 to 499 6
500 to 999 12
≥1000 ≥15