Configuring portal user information synchronization
Only Layer 3 portal authentication supports this feature.
Once the device loses communication with a portal server, the portal user information on the device and that on the portal server may be inconsistent after the communication resumes. To solve this problem, the device provides the portal user information synchronization function. This function is implemented by sending and detecting the portal synchronization packet. The process is as follows:
The portal server sends the online user information to the access device in a user synchronization packet at the user heartbeat interval, which is set on the portal server.
Upon receiving the user synchronization packet, the access device checks the user information carried in the packet with its own. If the device finds a nonexistent user in the packet, it informs the portal server of the information and the portal server will delete the user. If the device finds that one of its users does not appear in the user synchronization packets within N consecutive synchronization probe intervals (N is equal to the value of retries configured in the portal server user-sync command), it considers that the user does not exist on the portal server and logs the user off.
To configure the portal user information synchronization function:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Configure the portal user information synchronization function. | portal server server-name user-sync [ interval interval ] [ retry retries ] | Not configured by default. The portal server specified in the command must exist. This function can take effect only when the specified portal server is referenced on the interface connecting the users. |
The user information synchronization function requires that a portal server supports the portal user heartbeat function. Only the IMC portal server supports the portal user heartbeat function. To implement the portal user synchronization function, you also need to configure the user heartbeat function on the portal server and make sure that the product of interval and retry is greater than or equal to the portal user heartbeat interval. Hewlett Packard Enterprise recommends configuring the interval to be greater than the portal user heartbeat interval configured on the portal server.
For redundant user information on the device—information for users who are considered nonexistent on the portal server, the device deletes the information during the (N+1)th interval, where N is equal to the value of retries configured in the portal server user-sync command.