Event structure: native ATM

Event Structure What is an ATM event ?...

native ATM display by using Clarinet Event-Editor without any filter ...

ATM decoding by using Clarinet Event-Editor with a filter ...

Standards    

ATM event

The ATM events are generated by the analysis process from the SL or DL link with the Cell or CPCS-PDU acquisition mode.

The binary event structure is defined in the Clarinet-API.

Clarinet Event-Editor: native ATM display

The edition of the ATM events without any decoding/formatting allows to display the content of the differents fields according to the Cell or CPCS-PDU acquisition mode:

atm_aal5_cell_native.gif (13232 octets)

atm_aal5_pdu_native.gif (10282 octets)

Event information Date Date of the event (end of cell or PDU) in the format: hh:mm:ss/xxx.yyy.z  
N The interface number which identifies the Clarinet-interface connected to the host.
Link type
  • TS: Signalling Link  Transmit direction
  • RS: Signalling Link Receive direction
  • TD: Data Link Transmit direction
  • RD: Data Link Receive direction
D1 The decoding level as specified in the filter (protocol stack).

Protocol fields ATM <AAL type> Ctrl <ATM type>    [nnnn]

Content displayed in hexadecimal.
  • for Cell, header and information fields.
  • for CPCS-PDU, Cell header, conveyed data, and other fields.
 

ATM Protocol fields

<AAL type>
  • 5.
  • 1.
  • 3/4.

Ctrl Control field in the format (xxxx,yyyy) :
  xxxx decimal value of VPI within the cell header.
  yyyyy decimal value of VCI within the cell header.
<ATM_type>
  • CELL.
  • CPCS-PDU.
[nnnn] The number of octets included in the Cell or CPCS-PDU content.

 


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updated:  27-Feb-04