Wireshark · Display Filter Reference: OSSP

Field name	Description	Type	Versions
ossp.esmc.event_flag	Event Flag	Boolean	2.0.0 to 4.4.2
ossp.esmc.padding	Padding	Byte sequence	2.0.0 to 4.4.2
ossp.esmc.ql	Quality Level	Unsigned integer (16 bits)	2.0.0 to 4.4.2
ossp.esmc.ql.invalid	Invalid SSM message, unknown QL code	Label	2.0.0 to 4.4.2
ossp.esmc.reserved	Reserved	Unsigned integer (24 bits)	2.0.0 to 4.4.2
ossp.esmc.reserved_bits	Reserved	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.reserved_bits_must_be_set_to_all_zero	Reserved bits must be set to all zero	Label	2.0.0 to 4.4.2
ossp.esmc.timestamp	Timestamp (ns)	Signed integer (32 bits)	2.0.0 to 3.6.24
ossp.esmc.timestamp_valid_flag	Timestamp Valid Flag	Unsigned integer (8 bits)	2.0.0 to 3.6.24
ossp.esmc.tlv	ESMC TLV	Label	2.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_clockid	SyncE clockID	Unsigned integer (64 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_eec	Cascaded EECs	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_eeec	Cascaded eEECs	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_essm	Enhanced SSM Code	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_flag_chain	Partial chain	Boolean	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_flag_mixed	Mixed EEC/eEEC clocks	Boolean	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_flag_reserved	Reserved	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ext_ql_reserved	Reserved	Unsigned integer (40 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_length	TLV Length	Unsigned integer (16 bits)	2.0.0 to 4.4.2
ossp.esmc.tlv_length.bad	QL TLV Length must be X	Label	2.0.0 to 4.4.2
ossp.esmc.tlv_ql_ssm	SSM Code	Unsigned integer (8 bits)	4.0.0 to 4.4.2
ossp.esmc.tlv_ql_unused	Unused	Unsigned integer (8 bits)	2.0.0 to 4.4.2
ossp.esmc.tlv_ql_unused.not_zero	Unused bits of TLV must be all zeroes	Label	2.0.0 to 4.4.2
ossp.esmc.tlv_ts_reserved	Reserved	Unsigned integer (8 bits)	2.0.0 to 3.6.24
ossp.esmc.tlv_type	TLV Type	Unsigned integer (8 bits)	2.0.0 to 4.4.2
ossp.esmc.tlv_type.decoded_as_ext_ql	Let's decode as if this is Extended QL TLV	Label	4.0.0 to 4.4.2
ossp.esmc.tlv_type.decoded_as_ql_type	Let's decode as if this is QL TLV	Label	2.0.0 to 4.4.2
ossp.esmc.tlv_type.decoded_as_timestamp	Let's decode as if this is Timestamp TLV	Label	2.0.0 to 3.6.24
ossp.esmc.tlv_type.not_ext_ql	TLV Type must be == Extended QL	Label	4.0.0 to 4.4.2
ossp.esmc.tlv_type.not_timestamp	TLV Type must be == Timestamp because Timestamp Valid Flag is set	Label	2.0.0 to 3.6.24
ossp.esmc.tlv_type.ql_type_not_first	TLV Type must be QL because QL TLV must be first in the ESMC PDU	Label	2.0.0 to 4.4.2
ossp.esmc.version	Version	Unsigned integer (8 bits)	2.0.0 to 4.4.2
ossp.esmc.version.compliance	Version must claim compliance with Version 1 of this protocol	Label	2.0.0 to 4.4.2
ossp.itu.subtype	ITU-T OSSP Subtype	Unsigned integer (16 bits)	2.0.0 to 4.4.2
ossp.oui	OUI	Unsigned integer (24 bits)	2.0.0 to 4.4.2