Display Filter Reference: Van Jacobson PPP compression

Protocol field name: vjc

Versions: 3.6.0 to 3.6.8

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Field name Description Type Versions
vjc.bad_data Non-compliant packet data Label 3.6.0 to 3.6.8
vjc.change_mask Change mask Unsigned integer (1 byte) 3.6.0 to 3.6.8
vjc.change_mask.ack TCP Acknowledgement flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.connection_number Connection number flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.ip_id IP ID flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.psh TCP PSH flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.reserved Reserved Boolean 3.6.0 to 3.6.8
vjc.change_mask.seq TCP Sequence flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.urg TCP Urgent flag Boolean 3.6.0 to 3.6.8
vjc.change_mask.win TCP Window flag Boolean 3.6.0 to 3.6.8
vjc.checksum TCP Checksum Unsigned integer (2 bytes) 3.6.0 to 3.6.8
vjc.compressed Is compressed Boolean 3.6.0 to 3.6.8
vjc.connection_number Connection number Unsigned integer (1 byte) 3.6.0 to 3.6.8
vjc.delta_ack Delta ack Unsigned integer (2 bytes) 3.6.0 to 3.6.8
vjc.delta_ipid Delta IP ID Unsigned integer (2 bytes) 3.6.0 to 3.6.8
vjc.delta_seq Delta seq Unsigned integer (2 bytes) 3.6.0 to 3.6.8
vjc.delta_window Delta window Signed integer (2 bytes) 3.6.0 to 3.6.8
vjc.error Unrecoverable dissector error Label 3.6.0 to 3.6.8
vjc.no_connection No saved connection found (common at capture start) Label 3.6.0 to 3.6.8
vjc.no_connection_data Could not find saved connection data Label 3.6.0 to 3.6.8
vjc.no_connection_id No connection ID and no prior connection (common at capture start) Label 3.6.0 to 3.6.8
vjc.no_decompress Undecoded data (impossible due to missing information) Label 3.6.0 to 3.6.8
vjc.no_direction Connection has no direction info, cannot decompress Label 3.6.0 to 3.6.8
vjc.special.sawu .... 1111 = special case for "unidirectional data transfer" Label 3.6.0 to 3.6.8
vjc.special.swu .... 1011 = special case for "echoed interactive traffic" Label 3.6.0 to 3.6.8
vjc.tcp_data TCP data Byte sequence 3.6.0 to 3.6.8
vjc.urgent_pointer Urgent pointer Unsigned integer (2 bytes) 3.6.0 to 3.6.8