Wireshark · Display Filter Reference: Layer 2 Tunneling Protocol

Field name	Description	Type	Versions
l2tp.avp.advisory_msg	Advisory Msg	Character string	1.12.0 to 4.4.2
l2tp.avp.alignment_errors	Alignment Errors	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.analog_access_supported	Analog Access Supported	Boolean	1.12.0 to 4.4.2
l2tp.avp.analog_bearer_type	Analog Bearer Type	Boolean	1.12.0 to 4.4.2
l2tp.avp.assigned_control_conn_id	Assigned Control Connection ID	Unsigned integer (32 bits)	1.8.0 to 4.4.2
l2tp.avp.assigned_cookie	Assigned Cookie	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.assigned_session_id	Assigned Session ID	Unsigned integer (16 bits)	1.8.0 to 4.4.2
l2tp.avp.assigned_tunnel_id	Assigned Tunnel ID	Unsigned integer (16 bits)	1.8.0 to 4.4.2
l2tp.avp.async_framing_supported	Async Framing Supported	Boolean	1.12.0 to 4.4.2
l2tp.avp.async_framing_type	Async Framing Type	Boolean	1.12.0 to 4.4.2
l2tp.avp.broadbandtype	Type	Unsigned integer (16 bits)	2.2.0 to 4.4.2
l2tp.avp.buffer_overruns	Buffer Overruns	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.cablelabstype	Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.call_serial_number	Call Serial Number	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.called_number	Called Number	Character string	1.10.0 to 4.4.2
l2tp.avp.calling_number	Calling Number	Character string	1.10.0 to 4.4.2
l2tp.avp.cause_code	Cause Code	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.cause_code_direction	Direction	Unsigned integer (8 bits)	1.12.0 to 4.4.2
l2tp.avp.cause_code_message	Message	Character string	1.12.0 to 4.4.2
l2tp.avp.cause_msg	Cause Msg	Unsigned integer (8 bits)	1.12.0 to 4.4.2
l2tp.avp.chap_challenge	CHAP Challenge	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.chap_challenge_response	CHAP Challenge Response	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.circuit_status	Circuit Status	Boolean	1.12.0 to 4.4.2
l2tp.avp.circuit_type	Circuit Type	Boolean	1.12.0 to 4.4.2
l2tp.avp.ciscotype	Type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.avp.connect_speed	Connect Speed	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.control_protocol_number	Control Protocol Number	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.crc_errors	CRC Errors	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.csu	Connect Speed Update	Label	2.2.0 to 4.4.2
l2tp.avp.csu.current_rx_speed	Current RX Connect Speed	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.avp.csu.current_rx_speed64	Current RX Connect Speed	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.avp.csu.current_tx_speed	Current TX Connect Speed	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.avp.csu.current_tx_speed64	Current TX Connect Speed	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.avp.csu.remote_session_id	Remote Session ID	Unsigned integer (16 bits)	3.4.0 to 4.4.2
l2tp.avp.csu.res	Reserved	Unsigned integer (16 bits)	2.2.0 to 4.4.2
l2tp.avp.data_sequencing	Data Sequencing	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.digital_access_supported	Digital Access Supported	Boolean	1.12.0 to 4.4.2
l2tp.avp.digital_bearer_type	Digital Bearer Type	Boolean	1.12.0 to 4.4.2
l2tp.avp.disconnect_code	Disconnect Code	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.ericssontype	Type	Unsigned integer (16 bits)	2.2.0 to 4.4.2
l2tp.avp.error_code	Error code	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.error_message	Error Message	Character string	1.12.0 to 4.4.2
l2tp.avp.firmware_revision	Firmware Revision	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.framing_errors	Framing Errors	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.hardware_overruns	Hardware Overruns	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.hidden	Hidden	Boolean	1.0.0 to 4.4.2
l2tp.avp.host_name	Host Name	Character string	1.12.0 to 4.4.2
l2tp.avp.initial_received_lcp_confreq	Initial Received LCP CONFREQ	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.last_received_lcp_confreq	Last Received LCP CONFREQ	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.last_sent_lcp_confreq	Last Sent LCP CONFREQ	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.layer2_specific_sublayer	Layer2 Specific Sublayer	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.length	Length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.avp.local_session_id	Local Session ID	Unsigned integer (32 bits)	1.8.0 to 4.4.2
l2tp.avp.mandatory	Mandatory	Boolean	1.0.0 to 4.4.2
l2tp.avp.maximum_bps	Maximum BPS	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.message_digest	Message Digest	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.message_type	Message Type	Unsigned integer (16 bits)	1.8.0 to 4.4.2
l2tp.avp.minimum_bps	Minimum BPS	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.nonce	Nonce	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.physical_channel	Physical Channel	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.preferred_language	Preferred Language	Character string	1.12.0 to 4.4.2
l2tp.avp.private_group_id	Private Group ID	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.protocol_revision	Revision	Unsigned integer (8 bits)	1.12.0 to 4.4.2
l2tp.avp.protocol_version	Version	Unsigned integer (8 bits)	1.12.0 to 4.4.2
l2tp.avp.proxy_authen_challenge	Proxy Authen Challenge	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.proxy_authen_id	Proxy Authen ID	Unsigned integer (8 bits)	1.12.0 to 4.4.2
l2tp.avp.proxy_authen_name	Proxy Authen Name	Character string	1.12.0 to 4.4.2
l2tp.avp.proxy_authen_response	Proxy Authen Response	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.proxy_authen_type	Proxy Authen Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.pseudowire_type	Pseudowire Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.pw_type	PW Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.random_vector	Random Vector	Byte sequence	1.12.0 to 4.4.2
l2tp.avp.receive_accm	Receive ACCM	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.receive_window_size	Receive Window Size	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.avp.remote_end_id	Remote End ID	Character string	1.12.0 to 4.4.2
l2tp.avp.remote_session_id	Remote Session ID	Unsigned integer (32 bits)	1.8.0 to 4.4.2
l2tp.avp.router_id	Router ID	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.rx_connect_speed	Rx Connect Speed	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.rx_connect_speed_v3	Rx Connect Speed v3	Unsigned integer (64 bits)	1.12.0 to 4.4.2
l2tp.avp.send_accm	Send ACCM	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.sub_address	Sub-Address	Character string	1.12.0 to 4.4.2
l2tp.avp.sync_framing_supported	Sync Framing Supported	Boolean	1.12.0 to 4.4.2
l2tp.avp.sync_framing_type	Sync Framing Type	Boolean	1.12.0 to 4.4.2
l2tp.avp.time_out_errors	Time-out Errors	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.avp.tx_connect_speed_v3	Tx Connect Speed v3	Unsigned integer (64 bits)	1.12.0 to 4.4.2
l2tp.avp.type	AVP Type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.avp.vendor_id	Vendor ID	Unsigned integer (32 bits)	1.0.0 to 4.4.2
l2tp.avp.vendor_name	Vendor Name	Character string	1.12.0 to 4.4.2
l2tp.avp_length.bad	Bad AVP length	Label	2.0.0 to 4.4.2
l2tp.broadband.access_loop_encapsulation	Access Loop Encapsulation	Label	2.2.0 to 4.4.2
l2tp.broadband.access_loop_encapsulation.data_link	Data Link	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.broadband.access_loop_encapsulation.enc1	Encaps 1	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.broadband.access_loop_encapsulation.enc2	Encaps 2	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.broadband.actual_dr_down	Actual Data Rate Downstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.actual_dr_up	Actual Data Rate Upstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.actual_interleaving_delay_down	Actual Interleaving Delay Downstream	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.actual_interleaving_delay_up	Actual Interleaving Delay Upstream	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.agent_circuit_id	Agent Circuit ID	Character string	2.2.0 to 4.4.2
l2tp.broadband.agent_remote_id	Agent Remote ID	Character string	2.2.0 to 4.4.2
l2tp.broadband.ancp_access_line_type	ANCP Access Line Type	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.attainable_dr_down	Attainable Data Rate Downstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.attainable_dr_up	Attainable Data Rate Upstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.iwf_session	IWF Session	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.maximum_dr_down	Maximum Data Rate Downstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.maximum_dr_up	Maximum Data Rate Upstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.maximum_interleaving_delay_down	Maximum Interleaving Delay Downstream	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.maximum_interleaving_delay_up	Maximum Interleaving Delay Upstream	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.broadband.minimum_dr_down	Minimum Data Rate Downstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.minimum_dr_down_low_power	Minimum Data Rate Downstream Low-Power	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.minimum_dr_up	Minimum Data Rate Upstream	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.broadband.minimum_dr_up_low_power	Minimum Data Rate Upstream Low-Power	Unsigned integer (64 bits)	2.2.0 to 4.4.2
l2tp.cablel.frequency	Frequency	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.cablel.l_bit	L(lock bit)	Boolean	1.12.0 to 4.4.2
l2tp.cablel.m	M	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cablel.modulation	Modulation	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cablel.n	N	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cablel.tsid_group_id	TSID Group ID	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.ccid	Control Connection ID	Unsigned integer (32 bits)	1.0.0 to 4.4.2
l2tp.cisco.assigned_control_connection_id	Assigned Control Connection ID	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.cisco.assigned_cookie	Assigned Cookie	Byte sequence	1.12.0 to 4.4.2
l2tp.cisco.circuit_status	Circuit Status	Boolean	1.12.0 to 4.4.2
l2tp.cisco.circuit_type	Circuit Type	Boolean	1.12.0 to 4.4.2
l2tp.cisco.draft_avp_version	Draft AVP Version	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cisco.interface_mtu	Interface MTU	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cisco.local_session_id	Local Session ID	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.cisco.message_digest	Message Digest	Byte sequence	1.12.0 to 4.4.2
l2tp.cisco.nonce	Nonce	Byte sequence	1.12.0 to 4.4.2
l2tp.cisco.pseudowire_type	Pseudowire Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cisco.pw_type	PW Type	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.cisco.remote_end_id	Remote End ID	Character string	1.12.0 to 4.4.2
l2tp.cisco.remote_session_id	Remote Session ID	Unsigned integer (32 bits)	1.12.0 to 4.4.2
l2tp.cisco.tie_breaker	Tie Breaker	Unsigned integer (64 bits)	1.12.0 to 4.4.2
l2tp.cookie	Cookie	Byte sequence	1.6.0 to 4.4.2
l2tp.ericsson.abis_lower_mode	Abis Lower Type	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.conn_type	Connection Type	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.crc32_en	CRC32 Enabled	Boolean	2.2.0 to 4.4.2
l2tp.ericsson.crc32_enable	CRC32 Enabled	Boolean	2.2.0 to 4.4.2
l2tp.ericsson.gcg.bundle_tout	TCG Bundling Timeout (ms)	Unsigned integer (8 bits)	2.4.0 to 4.4.2
l2tp.ericsson.map_ssc	Super Channel	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.map_tei_high	TEI Range Highest Value	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.map_tei_low	TEI Range Lowest Value	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.msg_type	Ericsson Message Type	Unsigned integer (16 bits)	2.2.0 to 4.4.2
l2tp.ericsson.num_maps	Number of TEI-SC Maps	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.overload_thresh	Overload Threshold in 0.1%	Unsigned integer (16 bits)	2.2.0 to 4.4.2
l2tp.ericsson.stn_name	STN Name	Character string	2.2.0 to 4.4.2
l2tp.ericsson.tc_group_id	Transport Config Group ID	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.tc_num_groups	Number of Transport Config Groups	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.tc_num_sapi	Number of SAPIs in Transport Group	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.tcg.bundle_max_pkt	TCG Bundling Max Packet Size	Unsigned integer (16 bits)	2.4.0 to 4.4.2
l2tp.ericsson.tcg_dscp	TCG DSCP	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.tcg_ip	TCG IP Address	IPv4 address	2.2.0 to 4.4.2
l2tp.ericsson.tcg_sapi	TCG SAPI	Unsigned integer (8 bits)	2.2.0 to 4.4.2
l2tp.ericsson.ver_2	Version (2)	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.ericsson.ver_3	Version (3)	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.ericsson.ver_pref	Preferred/Chosen Version	Unsigned integer (32 bits)	2.2.0 to 4.4.2
l2tp.flags	Flags	Unsigned integer (16 bits)	4.0.0 to 4.4.2
l2tp.incorrect_digest	Incorrect Digest	Label	1.12.0 to 4.4.2
l2tp.l2_spec_atm	ATM-Specific Sublayer	Label	1.6.0 to 4.4.2
l2tp.l2_spec_c	C-bit	Boolean	1.6.0 to 4.4.2
l2tp.l2_spec_def	Default L2-Specific Sublayer	Label	1.6.0 to 4.4.2
l2tp.l2_spec_docsis_dmpt	DOCSIS DMPT - Specific Sublayer	Label	1.6.0 to 4.4.2
l2tp.l2_spec_flow_id	Flow ID	Unsigned integer (8 bits)	1.6.0 to 4.4.2
l2tp.l2_spec_g	G-bit	Boolean	1.6.0 to 4.4.2
l2tp.l2_spec_h	H-bits	Unsigned integer (8 bits)	2.0.0 to 4.4.2
l2tp.l2_spec_s	S-bit	Boolean	1.6.0 to 4.4.2
l2tp.l2_spec_sequence	Sequence Number	Unsigned integer (24 bits)	1.6.0 to 4.4.2
l2tp.l2_spec_t	T-bit	Boolean	1.6.0 to 4.4.2
l2tp.l2_spec_u	U-bit	Boolean	1.6.0 to 4.4.2
l2tp.l2_spec_v	V-bit	Boolean	1.6.0 to 4.4.2
l2tp.lapd_info	LAPD info	Label	2.0.0 to 4.4.2
l2tp.length	Length	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.length_bit	Length Bit	Boolean	1.0.0 to 4.4.2
l2tp.Nr	Nr	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.Ns	Ns	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.offset	Offset	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.offset_bit	Offset bit	Boolean	1.0.0 to 4.4.2
l2tp.offset_padding	Offset Padding	Label	2.0.0 to 4.4.2
l2tp.priority	Priority	Boolean	1.0.0 to 4.4.2
l2tp.res	Reserved	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.result_code	Result code	Unsigned integer (16 bits)	1.12.0 to 4.4.2
l2tp.seq_bit	Sequence Bit	Boolean	1.0.0 to 4.4.2
l2tp.session	Session ID	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.session_id	Packet Type	Unsigned integer (32 bits)	2.0.0 to 3.6.24
l2tp.sid	Session ID	Unsigned integer (32 bits)	1.0.0 to 4.4.2
l2tp.tie_breaker	Tie Breaker	Unsigned integer (64 bits)	1.0.0 to 4.4.2
l2tp.tunnel	Tunnel ID	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.type	Type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.vendor_specific_avp_data	Vendor-Specific AVP data	Label	2.0.0 to 4.4.2
l2tp.version	Version	Unsigned integer (16 bits)	1.0.0 to 4.4.2
l2tp.zero_length_bit_message	Zero Length Bit message	Label	2.0.0 to 2.0.16
l2tp.zero_length_body_message	Zero Length Body message	Label	2.2.0 to 4.4.2
lt2p.cookie	Cookie	Byte sequence	1.0.0 to 1.4.15
lt2p.l2_spec_atm	ATM-Specific Sublayer	Label	1.0.0 to 1.4.15
lt2p.l2_spec_c	C-bit	Boolean	1.0.0 to 1.4.15
lt2p.l2_spec_def	Default L2-Specific Sublayer	Label	1.0.0 to 1.4.15
lt2p.l2_spec_docsis_dmpt	DOCSIS DMPT - Specific Sublayer	Label	1.4.0 to 1.4.15
lt2p.l2_spec_flow_id	Flow ID	Unsigned integer (8 bits)	1.4.0 to 1.4.15
lt2p.l2_spec_g	G-bit	Boolean	1.0.0 to 1.4.15
lt2p.l2_spec_s	S-bit	Boolean	1.0.0 to 1.4.15
lt2p.l2_spec_sequence	Sequence Number	Unsigned integer (24 bits)	1.0.0 to 1.4.15
lt2p.l2_spec_t	T-bit	Boolean	1.0.0 to 1.4.15
lt2p.l2_spec_u	U-bit	Boolean	1.0.0 to 1.4.15
lt2p.l2_spec_v	V-bit	Boolean	1.4.0 to 1.4.15