•If you remove the accounting server used for online users, the device cannot send
•The status of RADIUS servers, blocked or active, determines which servers the device will communicate with or turn to when the current servers are not available. In practice, you can specify one primary RADIUS server and multiple secondary RADIUS servers, with the secondary servers that function as the backup of the primary servers. Typically, the device chooses servers based on these rules:
{When the primary server is in the active state, the device communicates with the primary server. If the primary server fails, the device changes the state of the primary server to blocked, starts a quiet timer for the server, and turns to a secondary server in the active state (a secondary server configured earlier has a higher priority). If the secondary server is unreachable, the device changes the state of the secondary server to blocked, starts a quiet timer for the server, and continues to check the next secondary server in the active state. This search process continues until the device finds an available secondary server or has checked all secondary servers in the active state. If the quiet timer of a server expires or an authentication or accounting response is received from the server, the status of the server changes back to active automatically, but the device does not check the server again during the authentication or accounting process. If no server is found reachable during one search process, the device considers the authentication or accounting attempt a failure.
{Once the accounting process of a user starts, the device keeps sending the user's
{If you remove an authentication or accounting server in use, the communication of the device with the server will soon time out, and the device will look for a server in the active state by checking any primary server first and then the secondary servers in the order they are configured.
{When the primary server and secondary servers are all in the 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 the active state but all the others are in the blocked state, the device only tries to communicate with the server in the 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.
•Set a proper
Number of users | |
1 to 99 | 3 |
|
|
100 to 499 | 6 |
|
|
500 to 999 | 12 |
|
|
≥1000 | ≥15 |
|
|
379