ONU State Machine

In BBSim the device state is createdtained using a state machine library: fsm.

Here is a list of possible state transitions in BBSim:

Transition	Starting States	End State	Notes
-	-	created
discover	created	discovered
enable	discovered, disabled	enabled
receive_eapol_flow	enabled, gem_port_added	eapol_flow_received
add_gem_port	enabled, eapol_flow_received	gem_port_added	We need to wait for both the flow and the gem port to come before moving to auth_started
start_auth	eapol_flow_received, gem_port_added	auth_started
eap_start_sent	auth_started	eap_start_sent
eap_response_identity_sent	eap_start_sent	eap_response_identity_sent
eap_response_challenge_sent	eap_response_identity_sent	eap_response_challenge_sent
eap_response_success_received	eap_response_challenge_sent	eap_response_success_received
auth_failed	auth_started, eap_start_sent, eap_response_identity_sent, eap_response_challenge_sent	auth_failed
start_dhcp	eap_response_success_received	dhcp_started
dhcp_discovery_sent	dhcp_started	dhcp_discovery_sent
dhcp_request_sent	dhcp_discovery_sent	dhcp_request_sent
dhcp_ack_received	dhcp_request_sent	dhcp_ack_received
dhcp_failed	dhcp_started, dhcp_discovery_sent, dhcp_request_sent	dhcp_failed

In addition some transition can be forced via the API:

Transition	Starting States	End State	Notes
disable	eap_response_success_received, auth_failed, dhcp_ack_received, dhcp_failed	disabled	Emulates a devide mulfunction. Sends a DyingGaspInd and then an OnuIndication{OperState: 'down'}