Configuring a Grace Period for an Expired Passcode
You can configure a grace period for an expired passcode. The grace period is the period of time that a passcode will remain valid, even after a new passcode is generated. For example, if a five-minute grace period is set and passcode 1234 is refreshed to 5678, both passcodes will be valid for five minutes. After the 1234 passcode expires, the 5678 passcode will remain in effect.
To configure the grace period for an expired passcode, enter a command such as the following.
device(config-vlan-10-webauth)# auth-mode passcode grace-period 5
The grace period can be from 0 through 5 minutes. Setting the grace period to 0 means there is no grace period.