• Device fingerprinting cannot be enabled on same port as per-port tunneling node (PPTN). When the controller is not reachable, then the tunnel node server fallback local switching is configured for device fingerprinting to work.
  • If the client does not send the configured protocol, the fingerprinting cannot be completed.
  • HTTP fingerprinting works only when the traffic is received on Port 80.
  • Client entries are automatically removed from the client status table after 30 minutes.
  • Device fingerprinting and PUTN cannot work together on the same port when the switch is enabled (globally, irrespective of VLAN configuration) with DHCP snooping.
  • If the fingerprinting policy is already applied on the ports and the client limit is changed, then the effect only applies for the runtime clients or after interface flap.