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ATM網路訊務管理及信號系統---ATM訊號系統之研究發展

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ATM



Study and Development of ATM signaling System

NSC-88-2213-E-009-129 87/8/01 – 88/7/31     ATM    ATM   !"#$%&'()* +,-./0123 456789:; <=6>?@AB ATM CDE/0FG HI,JK#L MNOPQRS/0TUK >?DVWXNYZQRO[\/0TU K ABDV,]^U_`a bcde/0fghi _5j klmnopqrs tI,uv^U _` wxyz ^U_`{|mie /; ,NK}~€‚ƒ„ ATM E…€†IU >?&A B‡]‡DVh ^U_`{|,€ˆU ‰#Š‹Œ Ž ATM ,N  ‘’“‰#Š‹Œ”%m‰ ATM •– M—m˜ ATM 12M,N ATM •–M™ š› ^U_`”%œžŸyz ^U_ `{| >? DV¡¢‰•–M—m ABDV,wx^U_`{| £‡N ¤z¥C¦ ATM XK^U_` {|”%§¨‰© ª«¬”%N­ ®¯ ’°I,z±²N ^U_`³´ª« µ”¶· š›, 

Asynchronous Transfer Mode (ATM) network provides several types of quality of service. In order to guarant ee the quality for all servic es, ATM network needs a signaling protocol to ful fill the requir ement and to work e f fici ently. The signaling protocol specifies the sequence o f messages that must be exchang ed, the rules for veri fying consistency of the param eters, and the actions to be taken in order to establish and releas e ATM layer connections. There for e, an end host needs to use signaling protocol to setup the connection befo re it can transmit data. Also, it needs to release the connection when it finishes the transmission. It would be a tough work if applications have to take care o f the

singling process. In order to simplify the development of applications, it is pre fer able to provide some APIs (Application Program Inter f ac e) for the applic ations. In this project, we study the ATM singling protocol and then implement APIs for h andling the point-to-point connection setup and release. We use several PCs to emulate the ATM network. Each PC can be a client or an ATM switch. An application run on the client can setup a conne ction to another client or rele ase a connection by c alling the appropriat e APIs. Developing these APIs has the advantag e that when the underlying network is changed into ATM network, the developed APIs can be migrated to the new environm ent with some minor modifications. Of cours e, the existing applications can still execute correctly without any modification.

  ¸…¹ º»wxŠ]¤ $¼@½¾i…¿… ÀTU O[OÁ ÂQRO[ÃÄXÅÆÇ Ƚ OPµX; É@ÊËQ ,¤OÁ ÌÍÎÏÐ!"Š]¤ Ñ Òv6v&ÓÔv $,J Kwx#Õ`Տ ÓÔ Ì Í ÖN /› ,×  ØO [ `Ù ATM,

Asynchronous Transfe r Modeڝ¤ÛÜÝÞ

&ßÞ àá&º»âHTe(†²ã} Kä» LåæÌÍÃ,

ATM      

(Quality of Se rvice; QoS)X!"

 $%&çèi+éê °IATM /0¨Oë Ùsignaling protocolÚ '(ì , -./0123 4567 89:; <=6>?@AB ATM CDE /0FG HI,eíî ‰©m]¤ï ðwñ òó6Ï+ 36: 89& Ûeôõö,

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h÷ø ùL‰©ú’ûh .ü

 Point-to-point connection setup and release

 VPI/VCI selection and assignment

 QoS class request

 Identification of calling party

 Basic error handling

 Communication of speci fic inform ation in

setup request

 Subaddress support

 Speci fication o f Peak Cell Rate (PCR)

traffic parameters

 Transmit network selection

 Support for a call originator setup of a

point-to-multipoint call

 Support symmetric operation

À™. ùÄÅ/0ò óýÙaddressingÚ&þåæÙroutingÚ, ýwñN ATM VPI/VCI C&N C,J VPI/VCI §N†O[V™m  JK/0i¢#¤äC  ý  ‰LMó™ab   M  KÑ/0#ýN hi™;,;ú ´N˜LMåæ yz þ¬/0 œþåæ „,þåæ ã}/ 0¡%’#Jü  u  Håæí( þ  zi ­ V —­  ‡á Xu ó¦v  ÷ø)* !; N#}~€‚ƒ„ ATM   °I"`±\#ˆU‰#Š‹Œ ȽDV Ž$ÙemulateÚATM   °I%wx>?‡]‡DVh ^U_`{|ÙAPI, Application Program

Inter f ac eÚ,“‰#Š‹Œ” ATM 12M

—•–M•–M ^U_`”Ƚ API &h 89@¢•–M>? DV,e ATM 12M='(89& Îã Q)89úÔÓ6*+,-. fgþåæ%>? DV—mJ Q)"a/0 DV >?,¤ €ˆU API I^U_`@†¹  {|X€TU1n23 45†I APIs,JKz’C «¦X6ú¦ ATMX€”%7ª« API ‰© _`¬”%kÎwx ^U_`89:eô ®¯TU,¢"|Ƚ#}~” ;á„ ATM  °Izi ­< â=X”%>ºê? (”@A­ à APIs,  N†I "`™€FUBC@Dà EF "`,ˆU Windows GÁh Socket{| Ií¥CO[ t÷úK µT’C  Ethernet 2( wireless —m ATM ®¯X_`HI¶J°I ÏðX”%--KL_` ”8M;, N®¯ ‘úO€k‰P ™QRS Fast Ethernet T%U keô PC DE™KP %£V WV "`XEYDK®¯U ŽN ATM  ‰ PC D™ ATM 12 ‘,%K ‘wx _`”UZ[(client)–%&1 2 (switch)–a\Ãã},             OüATM GÁ†I‘ N†I ]™€ÆÇ_`‘H” %^ií- _;ÀS|hÃBCD YE ‰U¢Ä€`] FG@ ATM ®¯Y IÐN_`abX€ƒ °UÉcGÁ Socket d`khi¥C  DV>??(e IÐfgãhi

ATM DVh¶JDEÃ\NZ[– _

`ibOP>?DVà Cell%ibL› Call

Setup HI,

¤ ATM DV3h%NZ[–& 12 – _`ã}™h0,UEj–% &OP–XÅkl¡hi DVm%‡ ]‡ "`L›,]¤_` nhi DV m0Ƚ Call Setup HI ibL›,N> ?DV ½_ƒZ[–OP$>?D VÃopaN12 –=Y]à Socket EjK3kÙO:fgòó3op Ã_5%„q$>?DVÃ3 %ƒOPj¡op÷rstwP–K opkpuiOPKop ATM ý%&v DV]"à ATM ýE’ òó3Ã_ 5kw=Kì ATM ý´OPxO PKDV$Ŭm Address Lookup ÃH I,Nw=Y]^ÃOPx\ykK3 Cell OP:ì Z[–,Nì Z[– ‰ UfgEj _5j¡K3\¼ƒ

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z^#3·rop{E…#wP=D V·rÃ312 –j¡K3#O P:t$DV–%¶`>?|KDV, NK‰© _`íî ‰UN¤1 2 – òó>?@ ATM ýY]^ þ}(Routing Table)X¼ç~ VPI/VCIû}]¤“‡]‡ÃDVm0

& VPI/VCIaK VPI/VCI kl I\OPopU €wOPxÁ‚, XK‘k” !:#12 ‘ K‘¼kƒ„ NNI Ã<…,%qL ؍Ž†† ATM  ‡ö,  NKÜÝ}~€†I=Ž SSCOP ?N®¯,%†¹ PC ã=Ž$ˆ ˜%qœ‰ƒ <ŠŽ$ˆ˜”%XE ‹Œ( ATM a³´ª«,K_` ìSΔ¶J°I€¼k%Kˆ˜iw­ "Ð, 

[1] Lap Huynch Rong-Fend Chang and

Wushow Chou, “Perfo rmanc e comparison between TCP slow-start and a new adaptive rate-b ased cong estion avoidance s cheme,” IEEE, 1994.

[2] Thomas R. Henderson, “Design principles and per forman ce analysis of SSCOP: a new ATM Adaptation layer protocol,” ACM SIGCOMM Computer Communication Review, vol. 25, pp.47-59, April 1995. [3] Srinivasan Keshav, “A control-theoretic

approa ch to flow control,” ACM SIGCOMM Computer Communication Review, pp.189-201, Sep. 1991.

[4] ITU-T Recommendation Q.2100, “B-ISDN signaling ATM adaptation layer overview description,” December 1993.

[5] ITU-T Recommendation Q.2110,

“B-ISDN-ATM adaptation layer – service speci fic conn ection oriented protocol (SSCOP),” 1994.

[6] ITU-T Recommendation Q.2130, “B-ISDN signaling ATM adaptation layer – service speci fic coordin ation fun ction (SSCF) for support of signal at the user-to-n etwork interface (SSCF at UNI),” 1994.

[7] ITU-T Recommendation Q.2140, “B-ISDN signaling ATM adaptation layer – service speci fic coordin ation fun ction (SSCF) for support of signal at the network node interface (SSCF at NNI),” 1994.

[8] John Nagle, “On packet switches with

infinite storage,” IEEE Transactions on Communications, vol COM-35, no. 4, April 1987.

[9] The ATM Forum Technical Committee, “Traffi c management speci fic ation version 4.0,” ATM Forum, April 1996.

[10] V. Jacobson, “Congestion avoidance and

control,’ ACM SIGCOMM, pp.314-329, 1988.

[11] V. Jacobson, “Congestion avoidance and

control,’ ACM SIGCOMM, pp.314-329, 1988.

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