Systems Network Architecture (sna)

Table 287. Systems Network Architecture (sna)

FieldField NameTypeDescription
sna.nlp.frhTransmission Priority FieldUnsigned 8-bit integer 
sna.nlp.nhdrNetwork Layer Packet HeaderNo valueNetwork Layer Packet Header (NHDR)
sna.nlp.nhdr.0Network Layer Packet Header Byte 0Unsigned 8-bit integerByte 0 of Network Layer Packet contains SM and TPF
sna.nlp.nhdr.1Network Layer Packet Header Bype 1Unsigned 8-bit integerByte 1 of Network Layer Packet contains FT, Time Sensitive Packet Indicator and Congestion Indicator
sna.nlp.nhdr.anrAutomatic Network Routing EntryByte array 
sna.nlp.nhdr.fraFunction Routing Address EntryByte array 
sna.nlp.nhdr.ftFunction TypeUnsigned 8-bit integer 
sna.nlp.nhdr.slowdn1Slowdown 1Boolean 
sna.nlp.nhdr.slowdn2Slowdown 2Boolean 
sna.nlp.nhdr.smSwitching Mode FieldUnsigned 8-bit integer 
sna.nlp.nhdr.tpfTransmission Priority FieldUnsigned 8-bit integer 
sna.nlp.nhdr.tspiTime Sensitive Packet IndicatorBoolean 
sna.nlp.thdrRTP Transport HeaderNo valueRTP Transport Header (THDR)
sna.nlp.thdr.8RTP Transport Packet Header Bype 8Unsigned 8-bit integerByte 8 of RTP Transport Packet Header
sna.nlp.thdr.9RTP Transport Packet Header Bype 9Unsigned 8-bit integerByte 9 of RTP Transport Packet Header
sna.nlp.thdr.bsnByte Sequence NumberUnsigned 32-bit integerByte Sequence Number
sna.nlp.thdr.cqfiConnection Qualifyer Field IndicatorBoolean 
sna.nlp.thdr.dlfData Length FieldUnsigned 32-bit integerData Length Field
sna.nlp.thdr.eomiEnd Of Message IndicatorBoolean 
sna.nlp.thdr.lmiLast Message IndicatorBoolean 
sna.nlp.thdr.offsetData Offset/4Unsigned 16-bit integerData Offset in words
sna.nlp.thdr.osiOptional Segments Present IndicatorBoolean 
sna.nlp.thdr.rasapiReply ASAP IndicatorBoolean 
sna.nlp.thdr.retryiRetry IndicatorBoolean 
sna.nlp.thdr.setupiSetup IndicatorBoolean 
sna.nlp.thdr.somiStart Of Message IndicatorBoolean 
sna.nlp.thdr.sriSession Request IndicatorBoolean 
sna.nlp.thdr.tcidTransport Connection IdentifierByte arrayTransport Connection Identifier (TCID)
sna.rhRequest/Response HeaderNo value 
sna.rh.0Request/Response Header Byte 0Unsigned 8-bit integer 
sna.rh.1Request/Response Header Byte 1Unsigned 8-bit integer 
sna.rh.2Request/Response Header Byte 2Unsigned 8-bit integer 
sna.rh.bbiBegin Bracket IndicatorBoolean 
sna.rh.bciBegin Chain IndicatorBoolean 
sna.rh.cdiChange Direction IndicatorBoolean 
sna.rh.cebiConditional End Bracket IndicatorBooleanUsed to indicate the beginning or end of a group of exchanged requests and responses called a bracket. Only used on LU-LU sessions.
sna.rh.csiCode Selection IndicatorUnsigned 8-bit integerSpecifies the encoding used for the associated FMD RU.
sna.rh.dr1Definite Response 1 IndicatorBoolean 
sna.rh.dr2Definite Response 2 IndicatorBoolean 
sna.rh.ebiEnd Bracket IndicatorBoolean 
sna.rh.eciEnd Chain IndicatorBoolean 
sna.rh.ediEnciphered Data IndicatorBooleanIndicates that information in the associated RU is enciphered under session-level cryptography protocols.
sna.rh.eriException Response IndicatorBooleanUsed in conjunction with DR1I and DR2I to indicate, in a request, the form of response requested.
sna.rh.fiFormat IndicatorBoolean 
sna.rh.lcciLength-Checked Compression IndicatorBoolean 
sna.rh.pdiPadded Data IndicatorBooleanIndicates that the RU was padded at the end, before encipherment, to the next integral multiple of 8 bytes.
sna.rh.piPacing IndicatorBoolean 
sna.rh.qriQueued Response IndicatorBoolean 
sna.rh.rlwiRequest Larger Window IndicatorBooleanIndicates whether a larger pacing window was requested.
sna.rh.rriRequest/Response IndicatorUnsigned 8-bit integerDenotes whether this is a request or a response.
sna.rh.rtiResponse Type IndicatorBoolean 
sna.rh.ru_categoryRequest/Response Unit CategoryUnsigned 8-bit integer 
sna.rh.sdiSense Data IncludedBooleanIndicates that a 4-byte sense data field is included in the associated RU.
sna.thTransmission HeaderNo value 
sna.th.0Transmission Header Byte 0Unsigned 8-bit integerByte 0 of Tranmission Header contains FID, MPF, ODAI, and EFI as bitfields.
sna.th.cmd_fmtCommand FormatUnsigned 8-bit integer 
sna.th.cmd_snCommand Sequence NumberUnsigned 16-bit integer 
sna.th.cmd_typeCommand TypeUnsigned 8-bit integer 
sna.th.dafDestination Address FieldUnsigned 16-bit integer 
sna.th.dcfData Count FieldUnsigned 16-bit integerA binary count of the number of bytes in the BIU or BIU segment associated with the tranmission header. The count does not include any of the bytes in the transmission header.
sna.th.defDestination Element FieldUnsigned 16-bit integer 
sna.th.dsafDestination Subarea Address FieldUnsigned 32-bit integer 
sna.th.efiExpedited Flow IndicatorUnsigned 8-bit integerThe EFI designates whether the PIU belongs to the normal or expedited flow.
sna.th.er_vr_supp_indER and VR Support IndicatorUnsigned 8-bit integer 
sna.th.ernExplicit Route NumberUnsigned 8-bit integerThe ERN in a TH identifies an explicit route direction of flow.
sna.th.fidFormat IdentiferUnsigned 8-bit integerFormat Identification
sna.th.iernInitial Explicit Route NumberUnsigned 8-bit integer 
sna.th.lsidLocal Session IdentificationUnsigned 8-bit integer 
sna.th.mftMPR FID4 TypeBoolean 
sna.th.mpfMapping FieldUnsigned 8-bit integerThe Mapping Field specifies whether the information field associated with the TH is a complete or partial BIU.
sna.th.nlp_cpNLP Count or PaddingUnsigned 8-bit integer 
sna.th.nlpoiNLP Offset IndicatorUnsigned 8-bit integer 
sna.th.ntwk_prtyNetwork PriorityUnsigned 8-bit integer 
sna.th.oafOrigin Address FieldUnsigned 16-bit integer 
sna.th.odaiODAI Assignment IndicatorUnsigned 8-bit integerThe ODAI indicates which node assigned the OAF'-DAF' values carried in the TH.
sna.th.oefOrigin Element FieldUnsigned 16-bit integer 
sna.th.osafOrigin Subarea Address FieldUnsigned 32-bit integer 
sna.th.piubfPIU Blocking FieldUnsigned 8-bit integerSpecifies whether this frame contains a single PIU or multiple PIUs.
sna.th.saSession AddressByte array 
sna.th.snaiSNA IndicatorBooleanUsed to identify whether the PIU originated or is destined for an SNA or non-SNA device.
sna.th.snfSequence Number FieldUnsigned 16-bit integerThe Sequence Number Field contains a numerical identifier for the associated BIU.
sna.th.tg_nonfifo_indTransmission Group Non-FIFO IndicatorBooleanIndicates whether or not FIFO discipline is to enforced in transmitting PIUs through the tranmission groups to prevent the PIUs getting out of sequence during transmission over the TGs.
sna.th.tg_snfTransmission Group Sequence Number FieldUnsigned 16-bit integer 
sna.th.tg_sweepTransmission Group SweepUnsigned 8-bit integer 
sna.th.tgsfTransmission Group Segmenting FieldUnsigned 8-bit integer 
sna.th.tpfTransmission Priority FieldUnsigned 8-bit integer 
sna.th.vr_cwiVirtual Route Change Window IndicatorUnsigned 16-bit integerUsed to change the window size of the virtual route by 1.
sna.th.vr_cwriVirtual Route Change Window Reply IndicatorUnsigned 16-bit integerPermits changing of the window size by 1 for PIUs received by the sender of this bit.
sna.th.vr_pac_cnt_indVirtual Route Pacing Count IndicatorUnsigned 8-bit integer 
sna.th.vr_rwiVirtual Route Reset Window IndicatorBooleanIndicates severe congestion in a node on the virtual route.
sna.th.vr_snf_sendVirtual Route Send Sequence Number FieldUnsigned 16-bit integer 
sna.th.vr_sqtiVirtual Route Sequence and Type IndicatorUnsigned 16-bit integerSpecifies the PIU type.
sna.th.vrnVirtual Route NumberUnsigned 8-bit integer 
sna.th.vrprqVirtual Route Pacing RequestBoolean 
sna.th.vrprsVirtual Route Pacing ResponseBoolean