705x2b1s - CCSDS

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RECOMMENDATION FOR ADVANCED ORBITING SYSTEMSThird packet, sequence counts wraps around to 0:snw ! SubnetID(0,0,0,0,0,0,1,0)! Add(1, Add(1, NullSNSAP))! Add(1, NullSNSAP)! MakeCCSDSPacket(MakePrimaryHeader(MakePacketID(Version1,PType,SHAbsent,APID(0,0,0,0,0,0,0,0,1,0,0)),MakePacketSC(PacketSequenceUnSeg,PacketSequenceCount(0,0,0,0,0,0,0,0,0,0,0,0,0,0)),PacketLength(0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1)),AddFront(Octet(0,0,0,0,0,0,0,0),AddFront(Octet(0,0,0,0,0,0,0,1),AddFront(Octet(0,0,0,0,0,0,1,0),AddFront(Octet(0,0,0,0,0,0,1,1), NullOS))))) ;Fourth subnetwork indication: different Sec. Head. Flag and data length. Sequence countcontinues upward.snw ! SubnetID(0,0,0,0,0,0,1,0)! Add(1, Add(1, NullSNSAP))! Add(1, NullSNSAP)! MakeCCSDSPacket(MakePrimaryHeader(MakePacketID(Version1,PType,SHPresent,APID(0,0,0,0,0,0,0,0,1,0,0)),MakePacketSC(PacketSequenceUnSeg,PacketSequenceCount(0,0,0,0,0,0,0,0,0,0,0,0,0,1)),PacketLength(0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0)),AddFront(Octet(0,0,0,0,0,1,0,0),AddFront(Octet(0,0,0,0,0,1,0,1),AddFront(Octet(0,0,0,0,0,1,1,0), NullOS)))) ;Fifth subnetwork indication: Sec. Header flag, data length and seq. count should have changedsnw ! SubnetID(0,0,0,0,0,0,1,0)! Add(1, Add(1, NullSNSAP))! Add(1, NullSNSAP)! MakeCCSDSPacket(MakePrimaryHeader(MakePacketID(Version1,PType,SHAbsent,APID(0,0,0,0,0,0,0,0,1,0,0)),MakePacketSC(PacketSequenceUnSeg,PacketSequenceCount(0,0,0,0,0,0,0,0,0,0,0,0,1,0)),PacketLength(0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0)),AddFront(Octet(0,0,0,0,0,1,1,1),AddFront(Octet(0,0,0,0,1,0,0,0),AddFront(Octet(0,0,0,0,1,0,0,1),AddFront(Octet(0,0,0,0,1,0,1,0),AddFront(Octet(0,0,0,0,1,0,1,1), NullOS))))) ) ;success; exit)endprocendprocCCSDS HISTORICAL DOCUMENTCCSDS 705.2-B-1 Page A-61 May 1994CCSDS HISTORICAL DOCUMENT
Path Protocol Test 15RECOMMENDATION FOR ADVANCED ORBITING SYSTEMSThis test attempts to send three user-formatted packets on a path which is set up as a packetsource. The goal is to measure the path entity capacity to manage with repeated users requests.It also tests that the secondary header flag, the sequence count, the data length, the data, thepacket type and the sequence flag fields are all carried through correctly.Run the test using the command:ts2 pp.t15.lot pp.lotType START at the hippo prompt (after some time) and then select ppt15 from the menu. Stepthrough the events offered using the NEXT command of hippo. Eventually the success eventshould take place and the next NEXT command will result in deadlock. (Packettype parameterwill have different values during this test in order to verify its fate, thus it is not requested insimulation time.)The choice taken when multiple events are offered is not important for the success of this test;the exception to this is that the success/failure event should only be selected when there are noalternatives.The test result is successful only if the 'success' event happens (deadlock or failures before thisevent mean the specification does not accomplish the test).This process holds the test behaviour:process ppt15 (DLFlag : Bool) : noexit :=(hide pkt, oct, man, snw in(test[pkt, oct, man, snw]|[pkt, oct, man, snw]|PathProtocol[pkt, oct, man, snw] (PacketType(0), DLFlag)))whereThis is the test behaviour itself:CCSDS HISTORICAL DOCUMENTprocess test[pkt,oct,man,snw] : exit :=Set up the paths through the management gate:man ! MakePathID(APID(0,0,0,0,0,0,0,0,1,0,0),Add(1, Add(0, NullAPIDQual)))! UserFormatted! Succ(Succ(8))! Add(MakeRelay(SubnetID(0,0,0,0,0,0,1,0),Add(1, Add(1, NullSNSAP)),Add(1, NullSNSAP)),CreateRT) ;CCSDS 705.2-B-1 Page A-62 May 1994CCSDS HISTORICAL DOCUMENT
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705x2b1s - CCSDS

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