authentication timer handshake-period

Function

The authentication timer handshake-period command sets the handshake interval of the device with pre-connection users and authorized users.

The undo authentication timer handshake-period command restores the default setting.

The default handshake interval of the device with pre-connection users and authorized users is 300 seconds.

authentication timer handshake-period handshake-period

undo authentication timer handshake-period

Parameter	Description	Value
handshake-period	Specifies the handshake interval.	The value is an integer in the range from 5 to 7200, in seconds.

Authentication profile view

2: Configuration level

This function takes effect only for users who go online after this function is successfully configured.
The handshake function can be implemented using ARP packets.
If the number of ARP probe packets exceeds the default CAR value, the probe fails and the users are logged out. To resolve the problem, the following methods are recommended:
- Increase the handshake interval based on the number of users. The default handshake interval is recommended when there are less than 8000 users; the handshake interval should be no less than 600 seconds when there are more than 8000 users.
- Deploy the port attack defense function on the access device and limit the rate of packets sent to the CPU.

# In the authentication profile p1, set the handshake interval of the device with pre-connection users and authorized users to 200 seconds.

<sysname> system-view
[sysname] authentication-profile name p1
[sysname-authentication-profile-p1] authentication timer handshake-period 200