INTEGER { none(0), backoff(1), hello_timer_expired(2), peer_holddown_time_expired(3), keepalive_timer_expired(4), peer_keepalive_time_expired(5), bad_ldp_identifier(6), peer_recv_bad_ldp_identifier(7), bad_protocol_version(8), peer_recv_bad_protocol_version(9), peer_recv_bad_pdu_length(10), peer_recv_bad_message_length(11), peer_recv_bad_tlv_length(12), malformed_tlv_value(13), peer_recv_malformed_tlv_value(14), peer_shutdown(15), session_rejected_no_hello(16), peer_rejected_no_hello(17), session_rejected_parameters_advertisement_mode(18), peer_rejected_advertisement_mode(19), session_rejected_parameters_max_pdu_length(20), peer_rejected_max_pdu_length(21), peer_rejected_parameters_label_range(22), session_rejected_bad_keepalive_time(23), peer_rejected_bad_keepalive_time(24), internal_error(25), peer_internal_error(26), event_unlawful(27), passive_wait_init_or_keepalive_expired(28), peer_unknown_message_type(29), peer_unknown_tlv_type(30), tcp_connection_closed_by_peer(31), no_ip_routing(32), nsr_recover_fail(33), session_has_no_other_adj(34), session_connect_fail(35), session_count_has_reach_max_count(36), session_send_msg_fail(37), session_md5_password_changed(38), fsm_process_fail(39), session_init_fail(40), add_ftn_or_ilm_fail(41), close_instance_close(42), close_msg_proto_version_error(43), close_session_backoff_callback_but_no_active_adj(44), close_recv_bad_msg(45), user_cleared_session_manually(46), ldp_unconfigured_globally(47), ldp_disabled_on_interface(48), no_enough_memory(49), ldp_global_config_change(50), interface_vrf_changed(51), ldp_router_id_changed(52), interface_down(53), recv_bad_length_msg(54), recv_bad_tlv_len(55), recv_malformed_tlv(56), recv_internal_error(57), recv_bad_pdu_length(58), tcp_connect_not_correct(59), nsm_client_close(60), process_label_mapping_fail(61), targeted_session_unconfigured(62), switchover_process_gr(63), local_host_process_gr(64), reload_command(65), te_interface_disabled_targeted_session(66), targeted_hellos_no_longer_accepted(67) }