Wireshark · Display Filter Reference: Stream Control Transmission Protocol

Field name	Description	Type	Versions
retransmitted_after_ack.expert	Expert Info	Label	1.12.0 to 1.12.13
sctp.abort_t_bit	T-Bit	Boolean	1.0.0 to 4.4.2
sctp.ack	Acknowledges TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.ack_frame	Acknowledges TSN in frame	Frame number	1.0.0 to 4.4.2
sctp.acked	This chunk is acked in frame	Frame number	1.0.0 to 4.4.2
sctp.adapation_layer_indication	Indication	Unsigned integer (32 bits)	1.0.0 to 3.2.18
sctp.adaptation_layer_indication	Indication	Unsigned integer (32 bits)	3.4.0 to 4.4.2
sctp.asconf_ack_seq_nr_number	Sequence number	Unsigned integer (32 bits)	1.8.0 to 4.4.2
sctp.asconf_ack_serial_number	Serial number	Unsigned integer (32 bits)	1.0.0 to 1.6.16
sctp.asconf_seq_nr_number	Sequence number	Unsigned integer (32 bits)	1.8.0 to 4.4.2
sctp.asconf_serial_number	Serial number	Unsigned integer (32 bits)	1.0.0 to 1.6.16
sctp.assoc_index	Association index	Unsigned integer (16 bits)	1.12.0 to 4.4.2
sctp.cause_code	Cause code	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.cause_information	Cause information	Byte sequence	1.0.0 to 4.4.2
sctp.cause_length	Cause length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.cause_measure_of_staleness	Measure of staleness in usec	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.cause_missing_parameter_type	Missing parameter type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.cause_nr_of_missing_parameters	Number of missing parameters	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.cause_padding	Cause padding	Byte sequence	1.0.0 to 4.4.2
sctp.cause_reserved	Reserved	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.cause_stream_identifier	Stream identifier	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.cause_tsn	TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.checksum	Checksum	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.checksum.status	Checksum Status	Unsigned integer (8 bits)	2.2.0 to 4.4.2
sctp.checksum_bad	Bad checksum	Boolean	1.0.0 to 2.0.16
sctp.checksum_bad.expert	Bad SCTP checksum.	Label	1.12.0 to 4.4.2
sctp.chunk	Chunk	Label	4.4.0 to 4.4.2
sctp.chunk_bit_1	Bit	Boolean	1.0.0 to 4.4.2
sctp.chunk_bit_2	Bit	Boolean	1.0.0 to 4.4.2
sctp.chunk_flags	Chunk flags	Unsigned integer (8 bits)	1.0.0 to 4.4.2
sctp.chunk_length	Chunk length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.chunk_length.bad	Chunk length bad	Label	1.12.0 to 4.4.2
sctp.chunk_padding	Chunk padding	Byte sequence	1.0.0 to 4.4.2
sctp.chunk_type	Chunk type	Unsigned integer (8 bits)	1.0.0 to 4.4.2
sctp.chunk_type_to_auth	Chunk type	Unsigned integer (8 bits)	1.0.0 to 4.4.2
sctp.chunk_value	Chunk value	Byte sequence	1.0.0 to 4.4.2
sctp.cookie	Cookie	Byte sequence	1.0.0 to 4.4.2
sctp.correlation_id	Correlation_id	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.cumulative_tsn_ack	Cumulative TSN Ack	Unsigned integer (32 bits)	1.0.0 to 1.8.15
sctp.cwr_lowest_tsn	Lowest TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.data_b_bit	B-Bit	Boolean	1.0.0 to 4.4.2
sctp.data_e_bit	E-Bit	Boolean	1.0.0 to 4.4.2
sctp.data_fsn	Fragment sequence number	Unsigned integer (32 bits)	2.0.0 to 4.4.2
sctp.data_i_bit	I-Bit	Boolean	1.2.0 to 4.4.2
sctp.data_mid	Message identifier	Unsigned integer (32 bits)	2.0.0 to 4.4.2
sctp.data_payload_proto_id	Payload protocol identifier	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.data_reserved	Reserved	Unsigned integer (16 bits)	2.0.0 to 4.4.2
sctp.data_rtt	The RTT to SACK was	Time offset	1.8.0 to 4.4.2
sctp.data_sid	Stream identifier	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.data_ssn	Stream sequence number	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.data_tsn	Transmission sequence number (relative)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.data_tsn_raw	Transmission sequence number (absolute)	Unsigned integer (32 bits)	3.6.0 to 4.4.2
sctp.data_u_bit	U-Bit	Boolean	1.0.0 to 4.4.2
sctp.dstport	Destination port	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.duplicate	Fragment already seen in frame	Frame number	1.0.0 to 4.4.2
sctp.ecne_lowest_tsn	Lowest TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.edmid	Error Detection Method Identifier	Unsigned integer (32 bits)	4.2.0 to 4.4.2
sctp.forward_tsn_mid	Message identifier	Unsigned integer (32 bits)	2.2.0 to 4.4.2
sctp.forward_tsn_sid	Stream identifier	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.forward_tsn_ssn	Stream sequence number	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.forward_tsn_tsn	New cumulative TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.fragment	SCTP Fragment	Frame number	1.0.0 to 4.4.2
sctp.fragments	Reassembled SCTP Fragments	Label	1.0.0 to 4.4.2
sctp.hmac	HMAC	Byte sequence	1.0.0 to 4.4.2
sctp.hmac_id	HMAC identifier	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.i_forward_tsn_flags	Flags	Unsigned integer (16 bits)	2.2.0 to 4.4.2
sctp.i_forward_tsn_res	Reserved	Unsigned integer (16 bits)	2.2.0 to 4.4.2
sctp.i_forward_tsn_sid	Stream identifier	Unsigned integer (16 bits)	2.2.0 to 4.4.2
sctp.i_forward_tsn_tsn	New cumulative TSN	Unsigned integer (32 bits)	2.2.0 to 4.4.2
sctp.i_forward_tsn_u_bit	U-Bit	Boolean	2.2.0 to 4.4.2
sctp.init_credit	Advertised receiver window credit (a_rwnd)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.init_initial_tsn	Initial TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.init_initiate_tag	Initiate tag	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.init_nr_in_streams	Number of inbound streams	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.init_nr_out_streams	Number of outbound streams	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.initack_credit	Advertised receiver window credit (a_rwnd)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.initack_initial_tsn	Initial TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.initack_initiate_tag	Initiate tag	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.initack_nr_in_streams	Number of inbound streams	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.initack_nr_out_streams	Number of outbound streams	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.initiate_tag	Initiate tag	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.nr_sack_a_rwnd	Advertised receiver window credit (a_rwnd)	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_cumulative_tsn_ack	Cumulative TSN ACK	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_duplicate_tsn	Duplicate TSN	Unsigned integer (32 bits)	1.2.0 to 1.8.15, 2.4.0 to 4.4.2
sctp.nr_sack_gap_block_end	End	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_gap_block_end_tsn	End TSN	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_gap_block_start	Start	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_gap_block_start_tsn	Start TSN	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_nonce_sum	Nonce sum	Unsigned integer (8 bits)	4.2.0 to 4.4.2
sctp.nr_sack_nounce_sum	Nounce sum	Unsigned integer (8 bits)	1.2.0 to 4.0.17
sctp.nr_sack_nr_gap_block_end	End	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_nr_gap_block_end_tsn	End TSN	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_nr_gap_block_start	Start	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_nr_gap_block_start_tsn	Start TSN	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_duplicated_tsns	Number of duplicated TSNs	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_gap_blocks	Number of gap acknowledgement blocks	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_nr_gap_blocks	Number of nr-gap acknowledgement blocks	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_tsns_gap_acked	Number of TSNs in gap acknowledgement blocks	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_tsns_gap_acked.100	More than 100 TSNs were gap-acknowledged in this NR-SACK.	Label	1.12.0 to 4.4.2
sctp.nr_sack_number_of_tsns_nr_gap_acked	Number of TSNs in nr-gap acknowledgement blocks	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sctp.nr_sack_number_of_tsns_nr_gap_acked.100	More than 100 TSNs were nr-gap-acknowledged in this NR-SACK.	Label	1.12.0 to 4.4.2
sctp.nr_sack_reserved	Reserved	Unsigned integer (16 bits)	1.2.0 to 4.4.2
sctp.padding_data	Padding data	Byte sequence	2.0.0 to 4.4.2
sctp.parameter_add_incoming_streams_number	Number of streams	Unsigned integer (16 bits)	1.8.0 to 4.4.2
sctp.parameter_add_incoming_streams_reserved	Reserved	Unsigned integer (16 bits)	1.8.0 to 4.4.2
sctp.parameter_add_outgoing_streams_number	Number of streams	Unsigned integer (16 bits)	1.8.0 to 4.4.2
sctp.parameter_add_outgoing_streams_reserved	Reserved	Unsigned integer (16 bits)	1.8.0 to 4.4.2
sctp.parameter_bit_1	Bit	Boolean	1.0.0 to 4.4.2
sctp.parameter_bit_2	Bit	Boolean	1.0.0 to 4.4.2
sctp.parameter_cookie_preservative_incr	Suggested Cookie life-span increment (msec)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.parameter_heartbeat_information	Heartbeat information	Byte sequence	1.0.0 to 4.4.2
sctp.parameter_hostname	Hostname	Character string	1.0.0 to 4.4.2
sctp.parameter_ipv4_address	IP Version 4 address	IPv4 address	1.0.0 to 4.4.2
sctp.parameter_ipv6_address	IP Version 6 address	IPv6 address	1.0.0 to 4.4.2
sctp.parameter_length	Parameter length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.parameter_length.bad	Parameter length bad	Label	1.12.0 to 4.4.2
sctp.parameter_padding	Parameter padding	Byte sequence	1.0.0 to 4.4.2
sctp.parameter_padding.expert	The padding of this final parameter should be the padding of the chunk.	Label	1.12.0 to 4.4.2
sctp.parameter_receivers_next_tsn	Receivers next TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.parameter_reconfig_request_sequence_number	Re-configuration request sequence number	Unsigned integer (32 bits)	1.8.0 to 4.4.2
sctp.parameter_reconfig_response_result	Result	Unsigned integer (32 bits)	1.8.0 to 4.4.2
sctp.parameter_reconfig_response_sequence_number	Re-configuration response sequence number	Unsigned integer (32 bits)	1.8.0 to 4.4.2
sctp.parameter_reconfig_sid	Stream Identifier	Unsigned integer (16 bits)	1.8.0 to 4.4.2
sctp.parameter_senders_last_assigned_tsn	Senders last assigned TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.parameter_senders_next_tsn	Senders next TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.parameter_state_cookie	State cookie	Byte sequence	1.0.0 to 4.4.2
sctp.parameter_stream_reset_request_sequence_number	Stream reset request sequence number	Unsigned integer (32 bits)	1.0.0 to 1.6.16
sctp.parameter_stream_reset_response_result	Result	Unsigned integer (32 bits)	1.0.0 to 1.6.16
sctp.parameter_stream_reset_response_sequence_number	Stream reset response sequence number	Unsigned integer (32 bits)	1.0.0 to 1.6.16
sctp.parameter_stream_reset_sid	Stream Identifier	Unsigned integer (16 bits)	1.0.0 to 1.6.16
sctp.parameter_supported_addres_type	Supported address type	Unsigned integer (16 bits)	1.0.0 to 3.2.18
sctp.parameter_supported_address_type	Supported address type	Unsigned integer (16 bits)	3.4.0 to 4.4.2
sctp.parameter_type	Parameter type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.parameter_value	Parameter value	Byte sequence	1.0.0 to 4.4.2
sctp.pckdrop_b_bit	B-Bit	Boolean	1.0.0 to 4.4.2
sctp.pckdrop_m_bit	M-Bit	Boolean	1.0.0 to 4.4.2
sctp.pckdrop_t_bit	T-Bit	Boolean	1.0.0 to 4.4.2
sctp.pktdrop_bandwidth	Bandwidth	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.pktdrop_datafield	Data field	Byte sequence	1.0.0 to 4.4.2
sctp.pktdrop_queuesize	Queuesize	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.pktdrop_reserved	Reserved	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.pktdrop_truncated_length	Truncated length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.port	Port	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.random_number	Random number	Byte sequence	1.0.0 to 4.4.2
sctp.reassembled_in	Reassembled Message in frame	Frame number	1.0.0 to 4.4.2
sctp.retransmission	This TSN is a retransmission of one in frame	Frame number	1.0.0 to 4.4.2
sctp.retransmission.expert	Retransmitted TSN	Label	1.12.0 to 4.4.2
sctp.retransmission.more_than_twice	This TSN was retransmitted more than 2 times.	Label	1.12.0 to 4.4.2
sctp.retransmission_time	Retransmitted after	Time offset	1.0.0 to 4.4.2
sctp.retransmitted	This TSN is retransmitted in frame	Frame number	1.0.0 to 4.4.2
sctp.retransmitted_after_ack	Chunk was acked prior to retransmission	Frame number	1.0.0 to 4.4.2
sctp.retransmitted_after_ack.expert	This TSN was acked prior to this retransmission (reneged ack?).	Label	2.0.0 to 4.4.2
sctp.retransmitted_count	TSN was retransmitted this many times	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.rtt	The RTT to ACK the chunk was	Time offset	1.0.0 to 1.6.16
sctp.sack_a_rwnd	Advertised receiver window credit (a_rwnd)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_a_rwnd.expert	Zero Advertised Receiver Window Credit	Label	1.12.0 to 4.4.2
sctp.sack_cumulative_tsn_ack	Cumulative TSN ACK (relative)	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_cumulative_tsn_ack_raw	Cumulative TSN ACK (absolute)	Unsigned integer (32 bits)	3.6.0 to 4.4.2
sctp.sack_duplicate_tsn	Duplicate TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_gap_block_end	End	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.sack_gap_block_end_tsn	End TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_gap_block_malformed	Malformed gap block.	Label	1.12.0 to 4.4.2
sctp.sack_gap_block_out_of_order	Gap blocks not in strict order.	Label	1.12.0 to 4.4.2
sctp.sack_gap_block_start	Start	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.sack_gap_block_start_tsn	Start TSN	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_nonce_sum	Nonce sum	Unsigned integer (8 bits)	4.2.0 to 4.4.2
sctp.sack_nounce_sum	Nounce sum	Unsigned integer (8 bits)	1.0.0 to 4.0.17
sctp.sack_number_of_duplicated_tsns	Number of duplicated TSNs	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.sack_number_of_gap_blocks	Number of gap acknowledgement blocks	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.sack_number_of_tsns_gap_acked	Number of TSNs in gap acknowledgement blocks	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.sack_number_of_tsns_gap_acked.100	More than 100 TSNs were gap-acknowledged in this SACK.	Label	1.12.0 to 4.4.2
sctp.sack_rtt	The RTT since DATA was	Time offset	1.8.0 to 4.4.2
sctp.shared_key_id	Shared key identifier	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.shutdown_complete_t_bit	T-Bit	Boolean	1.0.0 to 4.4.2
sctp.shutdown_cumulative_tsn_ack	Cumulative TSN Ack	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sctp.srcport	Source port	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sctp.supported_chunk_type	Supported chunk type	Unsigned integer (8 bits)	1.0.0 to 4.4.2
sctp.verification_tag	Verification tag	Unsigned integer (32 bits)	1.0.0 to 4.4.2