DTIC ADA424768: Service Continuity in Networked Control Using Etherware

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by  Defense Technical Information Center

Jan 5

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MAJOR REPORT.

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SERVICE CONTINUITY IN NETWORKED CONTROL USING FTHERWARE

HST
CAPT GRAHAM SOOTT

[PERFOR CHESATTERTIOT NAMES) AND ADOREDSTEST
TUNIVERSHY OF ILUINOTS AT URBANA

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3° EFRON NORTON VENT WATERY AND HOTRESSEST
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‘THE VIEWS EXPRESSED IN THIS ARTICLE ARE
THOSE OF THE AUTHOR AND DO NOT REFLECT
‘THE OFFICIAL POLICY OR POSITION OF THE
UNITED STATES AIR FORCE, DEPARTMENT OF
DEFENSE, OR TUE U.S. GOVERNMENT.
Service Continuity in Networked Control using’
Etherwarc

(Chiat. ali, Seat Graham, Lai Sha, ao PB. Kut

[Galnoof Miso Urbans tT 61808,
ifctatige ergrinn Iva prsmor}euice-ade

Abtzact, Sern cntnity the eaplily > pone pest and
‘elatinsercior in qual dgtdstea the premer af anges, We
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Ghosateenceferts lay The params reran rome
rl pete ili th ral mora ee bo Sa a
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‘Tove Changes suc atenn am ce and Saad alg
tries ood tne. Nethen dna ha Elaree, oe mee
“fie itr cone, Anne hae dhnges Tags atoce dec
[rane ecajuurlen i an oplemnlts f etanbod e
fren, Ty bity of lleyace to ide aesoe etn,
io cadated peornanos le amesteted Brough fir erp

Kay words Seven only atmo cma, vba eb tine
eomponon negra le sors, herve.

1 Introduction

"Tho obit Lnlerte canes i fundrental quality of assionble dane
‘yntecn. Tho vat he o€ 4 ermera ie dtcemiyed to» large ca byte
Shilty to resp to changes in its opera eutltions. Hever, seas
‘Geel Wu anlcipate ll wack shares befte epsom x deplore Tend, yee
die offer desgnot to he able to avlve and dsnnmiclly adapt to cbaogee fo
their upcrntng eonditions Solera estan rw partial rueule due 10
{he “prorrar st date” concept inion: Ty tbe Von Neumana svelte.
Teka oper often sud a6 opersing stems ul idler eve bows
Aovelopod tv mahage slioation iene, Ts ise boa a ml ee nateally
ula software ese tus

Tavge dlatrbived wpoicaione re typically developed a nator of coord
naling enmrinents usa middleware. Cotepocert Hfeydls ore range} uting
fervicintaceors pd the mitden. Conponew2 la provide meric
one het, and thn fret bl fie itarneton. Toca, enc 20
[ponent ioerats nth Uw abo te gst hy provid g and cana arr.

DISTFUBUTION STATEMENT A
‘Approved for Public Release
Distribution Unlimited
Llowrser, cone in nperading conc rny onus some of che sons to
be efectos, Sine ccmponcole wally dopend onthe sally of scr fon
npr operation, tren Neeser oe. ta evi soem mrvng ev
Prt preaence of caigae. Hones sevice cout is “oy eeptement that
needs tm arene forth wabilyo?suck appacons,

‘Key inpovalons i idler provote servo coafimily fabs way,
Publ abner mlware (24), i} neem server to be chanel wthoct
ens having Ue anitor thos changse. Adaptive nt lective midleonce (1,
[lly atrwe rimponante to ov apete centurion, aid change hee ot
Itehasen, waits ill rustatauing seven to tha ees. ue tolate dll
fwoce (7h HE; remota seperation of oonoeras. Aapeca adres x unser
The es eri, ean be ted Woe ented om sormpanenteeuctres, mh
‘ou nesting the erie that thay prove. Midewaao for rn coating
{118) atzecor conto of eves een daring exponent mR ane sy
thea teva, TDG, mie of rare eeoceh in unwary focus 0
‘using nis comity dg change

‘ar Soeur fon netnenkid control aycema, which ars nmposed of eso,
truer, nd eomparer Up uldinte over «orev o onto nda
realtime syeires Buch gatems repro comeegere: of eontal rth cot
‘nieaton aod commited, and constitute x lyical at ston in Une eclatien
Stawtmortealsysten scr the Torn. Sines tho eterna cy ier
et wlth the reat worl. they are mbject co deco od fen unpredictble
‘Eusonen ‘The agra have to neerce operational negli te preaner: of
Gow Guangr The couoypr af oywrtinal imap eatstes ly note
featdvenecte och ve sale, ailing, and robcatton fo suc spree. "ts
‘Sars wo prawet Biberwate = mddeane for pervodot con, whieh
‘te have dovpart Le Hea TT Copvergunce Lab atthe Uibenay of Tinos

"This paper le thee akin batons Ft. the nlion uf opertioal
invent for netwonied col ie develope ur! Ge pain ebay lo nal
tatu i re ont, Serve enlily som to bo obo hey mqulzatent in
iddlrwece to eopyort operational ing’ far ach eftaq. Revd, oil
idee some lavlved npr narity oro Wnt tbe io
Ur the desga of Btherme b caceder?. nnd ite apport fo service eleaity
AF ated Ay cotebutins be he ably to rain comsenicatin ca
feedudng compro nate. Binal, 2 tall cootal stb dewloped sing
eherenn ie decsibed, or exjarents an prvearce of servic con'mlly
fur tke appietion ae preset

‘The precentatien in ctgaiond Gol, Section 9 dane: operations i
tegyty tor neveried Sone. are prevents hey challenges tly. Secon 9
Teldteay fho noporunet of servos opalinalty, ddr sgn ste, nd
‘hoiow for Ellmrmaze ‘Ino prmerrnsng model of Flats, ts eohieeane,
fond deals bon il auppent orion soul re prorie a Bcton 4.
‘ecrignn of our tee cll tetbad peel Section 8. fd by
presertion of deen Four pplication ad estrone Rihavacs, Detail of
rpm to fect the sgt fr seven rte a Bere pave
in Section 6. Our contin: ave placed ithe conto of rca esearch in
Sento 7, nn Seton § cones

2 Operational Integrity in Networked Control

“Tis wetionintoducr dh natu of operational ily aetworiad cox
cro: eaten. Tvs varkan changes fo each nn ate aad, ‘The abily tu
folate exc changes ip Roowra! a 4 by sballsage in airatatg opeeconnl
iuteite Zor such pete

ig. 1. Sabet of ammo soa a

‘2c Operstionn! Integrity

[Nermorial ganiulentane intense fitted reac aplenty
tale & ple. Sersnm provge seduce dow the pln bebsroe, his eine
Few Io eed coxpulrs soning ert! progcems te Reet ctstor
ounce tha xouttpbah dened pon Aeluators iapluont threads
tovemntel tho plant Av sw be Figte , exon and atustoe coxttute
the efoce bere: tbe mics the eal World ps, the uluDey ie
‘Sil nlomertad a's er of mfr coetonebte operas eo
Pearsputas

"for nh stovided vo the cloner spurte abjesive vo bo aii
‘vg plat opera. A rata oct of eee gel a eb of elec
tari Tat ene thas the panei = "sateen. Par cx &
(tate cotrl spl, ait eierion mol bu atc 9 ten vernon
slow ete an’ eyo care wld enzo that there ou olious
etme mT ater, cnet ecseria depron opal epiwtngs nase
aly pats of the ayes poceaton

“War lf he butonenior recy The a of watebles od Ani
as soot beak i ne eon 4 the acne nr oll "estate teats
‘Devon state abla of let al gen po Satine, Yep
Met The wt uf vues thatthe stole rue vadeles of a plan! ext Lt, ie
aed ite ese anon The wf te apo fo aul ak ge DaUs 2086,
IF tbe sua fs uate eparefbok ecb tho sat of xy ited tS
pectcaion. Novs sl Uenaleeaze ape coe oney 7h ae

“Srmom nitmored cuttol sata, homo iw suicent ba joes.
Lau egaaot nese ule pare For expe, n the oes alle coral
feat, 9 one napa toa soar fi atte ct, Wook Bo Loo al
fn, Tifa world sono eft, bi 02 tho deze eexpnase Tones Key
ivement in raila Safer wihoo: alecirg Ci cera on ofthe stem.
Thi cen 'n: maared with tbe feLowirg rotons. Opeionel copay the
slg af earn varie he oats atone to. By ena intr,
sro il rons the prope that th stale of ke pha apstom suey oa
Tine ino safe lato romre wh aim ero Une meratina®eapabigy
Edenton

2.9 Changes in networked eontrel eystem:

‘elo nt syst ate ie sie change dari thei perstiun.
Poe chenges veraly nflet abe of the eocroseanis dey I got have
rn le cuatgsaeoald fart Hert the opeation of ruber deyundest
ponents Tet ay calloge i aca operon neg bn
rebize he apt nf aah ebaages

“Tha sarge rncating In need cone’ ars ca be eased 9 vol
century oromelantery Paar shares ae cetional ioe) Wy aA
fen operon. Cinnntan apipeden nd eerfxveation cbengesosasitate Ur
evel Yoluraryeeagen arly fle one ot mre of J lysing

= Symtna Ar upgraded componene a’ ravien icin. anges mie oF
‘Elsone! fue or ramenseate a vie prt, Ror ea 2 nom
Cntr aay reufe ndtire infonoatcn fa the upces th i gate
ftom te er
Seanantiens hangs fa opetxngeleommnlie way be igen by changes
Snepecatiny eval oe ured, Hor eae, Helena @ ate
Gate, the sxpostive solr couspovent Ene erminnmiols diet to
Greil alt seoidano lant: wy vou to be rporoded we he
Eenen: are

= Cennnnmalention: Compote may ase tc be al in ents com
Iunicntoey Phase ar 7am vob Tor exanple, IF updates on a sso
[ie too nuisy the wir ry ted to be ake et i nol, Hon
‘er, Comebould rot rogue the ote a eesteah the communi
‘arpdl on Fea
Coroners ny ais wt to chang any of crvice paaetts of com:
fennlertan ctsanel, For ample, exxponants fa vireo amlourks 22y
trate tndeod teil fr nor” delay an share i 2) Chen el
‘Pork copolis cls ler connections browreneomparunte
= Timing: Changes in operating enter sould eres rata sng Ha
Tiong ocuinonnth Hor exacts ue cowie aay Oeod updates at a
Higver frequsey when approrhing etal conditions

= Locntion Creat tay be mien for ble atUnaion of ree
Trecatple ppoes foe ftom a aenser is «fl wre Peqnent than
sy ecker somunntiravin halve scene epost Tbe eompensrt
‘Sond Ube tigeted to the wire nade the cnao: to soul
‘inamunisaion tre

ovoorkay ogi ae caused br remote In the epartingsavinemvat be
yond operator eal. Ths ache th elivin

~ Pacoive iihmes: ‘sys chide cempeneat en dusto excepting, nods
Tells ne ze conzaunionie ri

— ‘Aotive tribaraxe Thabe ate teually octal hy wieeoutigoed ox erences,
Frapunanta, Azcther oir of eis falne is operator wistales during
agen sctiign stan

— Byrantine fturess Phew ate cateed by mabrows compenens ané are
ante ths Raid change wo cone

‘o'matotain opelinel nea the abser: hg rat be bended dy
mri, sod sa Spt ote suc operations pubes aos be a
ined

‘Notably active andy flats requiem ation aod sve
to be bal by appieton spark vbatania. Boece: 62m drs ate
In he rc of the paner, th ltr eangie oun be Bara in willnars

2. Service continatty

“Thi etl coonider the pmbler af maintaining apres itegity w 26
sete ertec To aheae sie, supa for nevi cantiooe” 3 certo a
{be aia osoiemal fn ddlenata, Varnes fie vated be proving moh
fnppott ete aces snd ie lnBaence ou dn nic fu Wtbornare one
ren,

5A Mamwalning Operational Tabagelty

[Middlesea en ypialy drvlopal a 8 aso eordosting een
[nantes that Street br proving and oraunsng servos. Fv returdeoi
‘Eel gninna ie partenlr, come of Ura nerdees ay be cxtel fr Tne
torofa cozponstt Per csaaphe the couroler io Pug drpeade on gst
[bench (os the cenzoce. Cotes: a tally neo and eealion i
Dporlck enemy shana bie Eerde ori ea eaut i ears fs
Fi the openeion of te ol er. Reace, coinisy of she fel neces
lmperl a the opettion of the oom. Scan, the actuters deal
tring corto tom the cote.
Apert fom tpoimy wernguretn, mest of the aang Yr in Sean
2:2 aeons ot en elated components. There ide as exp Be dane ia
taiddowato co prevent seh dango foe alfecing the Decree emyeane.
Lowowe, the impact uf thes ehasges on ther Aopen! cxaponenss ean bo
vintoed, For exaaple, ptt Io Ja a controle coeimesto
nuit trate, Howe, fi Sven corer anc witbia sapeiied
{Eons bourd, fis fav wll rol aly ar te operon uf the le of he
‘aoter, Sark ope eum been proved middie, Mowers, then
Tho auppor in atloware ny be ote cetite? iz pohly eaten COCA
cts and yetine Zien Tr srl ation, peal, appbeaon ser
radanioms weal nero

Tr geowal art rot, actre fare consiing appzacion speci een
rim, he foxpace af ae chang Is Hed to pointe cnet De
suite anpnort thom vlddiersre. This mainly excssts of malaing cout
Duily nf serio conzaced an proto by the sarc compeney. Ueno
ryt fr aezioe connie Une pcan frac yequied it devare for
Taloaiciog wachnal Integy in oetvor ol

Neon et acc i fry ne efeey eguoereata as, rege
‘bony uve jsp bo chaogee ne tem a¢ moma Ter etapa oa detec
i esltyvieleiny, w-amlstlereovspnnest rag Dot Bo ewe Ears =
Ioowiedmat fen another setote compen hefsrIt deslean to take som
tou netlon. Ona wzclen shape in panel, delays can be nly Trg ds to
Teterfzeape wal fut ial sor ditins Teen, bn rants operons!
inherit entnert met be ab in oneal omteloncal.

“Fnctber ingots eotlceration i the poowne of dejendencls ah
towel nateeron chaaeale For evar the coasola eanaee wai rhe
Unda from the mens bane aeding control: ly the aeacator Iz parca,
Updates em’ be delayed or hut daw 2 eouimnicaton fuliroe ins nied
Fink. Sycoueus common su nate ate erapance’s fo be aul
‘heeded or vat fully compl dan gos oes oe eu cacy.
‘rufous opto on th ruker hed, beast 8 cures nme
[Bad or vse om rations, Ettarwzoe ben born developed arab eayoerenoua
vr eed dona,

‘Bowel Ens eannicaton equi: x spouitentn feet Sorat. Sup>ert
for dpuossis naar mayne sgt is epeesring ts be este and ete
Site: Shvioneutnhy caqize thie spreiotioa to be becca serait
Basa ox vbcor soporte bao aod XM ae be guage for arent,
‘All eohsasiesrion io Briorenre i rnctgh eras, whieh ace elie RMT
cna approprntlscotin we! extnslle fart, Far plein in
Gtperdrnes vd sac tu adebley of sopperl fr XME, Eabersate bas bers
Sipaented using Jee,

Ty ovnponent ay tezinale dae ke wary ajupsdss or involuntary
fetus Te aeinein nrc cathy, componente net io be cette nn
rid within appeston spiel oe, For excep, ix conta
started ieshonl kaon the coant mee of he pat as 3 dora ey
wor le eithelyerclablefvn nace feedback, Chrk-poath 8 a commen
{en ova to ade “ia opr. Uren 2a a pesidraly chee
Dnid co shes nomuncate cane veer mil reuse canzens sat.
pm fm dace aiatng be Tena cls nematode Phere dsiga
[She proved ava bare serie.

‘Cumponecta tepcay rita eevee) cnamuniclin sens wi otbar
compemerine Freel croton rodse-mg on upsiay aoc cerponent
heuld ct rago te cance to be resented Cone beey, oman
ston ebeasnnld be uaitaid drape mith changes. Ui ie oop
Pout Eeharwaze lo pried, Menttars for ecmuruyieton chan caa
oaavat oral of ehelepeinted rite. ThicaTave restarted o upecer coe
Ihnwser te Conince slog psi ecablabed cheazele The ako proyidce
emus contouity re bre romps duviog thse cheagr.

"The necesito manu elent compenoni ratte ba? algo tiene
voll ae dei cbotn Terma, All carpoaenls ox given ae te
Tanaged by «sie Hoel proce witb pepe thveads for compere i
Fuss) Pheer, acing neve 3p Se ideerore deo cin he aly
Feotrtebin ane upgradeable Moco, invari apert f the adware
vn bs cbonged évonancaly, ave to be naeed Lor musi Babi
TTL hae spat to adap wmdero-rzl 2] anal den ter Etscvare
‘Ts ploopiy of Easily Taw aie oeruted ia the deelopcanc of « bate
tnininore fvncined ite for compels ors th te middle
For faibity snd vier, a Saeaetnn nity widesce vee le ver
bared

"AE ee shi arrests. ection, ce abr desig choles ine enabled
nrc sooplo thers ashnectane that pve svn conc
teleratng hg Unced Bertin 2

4. Edherware

“This setan decnbes Eieewore, cal iddhmace fr ocala? conto! ‘The
topiaorring nadat td the areiindure sf berate ato precale, Nui
sre fr mupporin serios ent Ta Rthervare, Ths pretence of the
(ene erin in Seton 2.2 i lle

4.1 Btherwave Programming Mudel

Vaberwane tt an agpaskrooou inclu! wlderare, Coerpnnens con
fate tr cusnaigng wats beh ar JT dacwoeto, aa noted i Soin 32
thermore peeves a Mera of lanes the gc wind To arfoelaieeese doc
neve ha oct of femoris Fu acene las hat pres saone
Dunit t mosuite the undebing AECL doesent. Appetit
‘ro are eed wo be abel of Pe Boe,
‘wu bss yom artorating cw diary in dstrboped wasn ae die=
cavers td estat cf daptaton co pret The ein pole
is solr 'n area ay avon w loll uniqu id tela Réadeg, vo
uch compeneot Jensen pba i eeecd hy saclling pre toe
feos orapaneita, Eanhvompeneit that need Be nro], regears &
tev wih th milo

1 pills decrbee tap ol of eles tht a sampoocah pnd. Roy
temple pre na vnon sataor ol sper Chat tha senzor Ls weer
fueron that eoeera tao eno bowen ve pies £00) cod (LST wn p>
propriate cect ste, Suppone a car Gruul knees the fortion of is
facto be wil soorueras 2317, ad (521 cou'd us tay iran to
eer to cele iin acon Gaga oppropaly eid rable eau.
[Bftornore sald th nung. Fie rot rit che pelo ofthe Won Sensor
pd frword Linens segue toi, Note Bis theca cones too ct
Shrelfpthe type ef ovnro, tw th melon to ieniviow f needs. Ta rel,
Iitosle tein rule are bee deft lu natch prods,

“AL Ether vrs hase he flomax threo ML Li

~ Profile; Ths rates Me scant of the event A ple oan bs a even
dleerigton ae above of Ue gli yy Binding of « cmap

— Contents Thr evra the contends of ep ores. All heaton eee
Indneetion i coarloed in hie Lae

— TMe-steanp: bach Liberent baa a Yinestari> would with its Az
fan cn eutee or one nots ln wet, the He amu iy aloes
Tranaeead to th oon iw of the cestiotin,

By dete, [horEveme ae elinced my and o order. Mosowe, line
sy be event eters shat oa la bs devon wring nkirapactGesioas "Te
bority wel wanlplat a ere of cv aw x pate ety Berar
Inozes tho novos ol PaeutPipe, A comanent 8 gen sx Event Pipe 42
nelle nyutent and gene. pyle Uixengh BreatPipe have wings zhat
fan be zed ty sqcrly fon evens ere doivro) UT wa thant. For eae,
{he cor contr saz teenie vf hat eee updates [or er dey, Boe Bad
Do ose for sl pts, Hanae. tm vrion ens oul oper no BP
hse eoutoll roqeoling unodablea-otar Saber. his ete Eat e233
sloog the pie wil net be terraced low, oad aacte aig te whe
eid

Thins ly ateescery to modi events a0 Ese Pips in regent changes
in opening sn Rok exainl, pales Sora the Waa soos cov gat
tug doo behing sulla, We stout be Me Tee ou: tis ac
StitioatIasing to ceoge she rau ot fe contol lkervace aapperts thie
Ep atta Fost BsenePipe dmamiesly Pyare 2 ans the ostve con
Seuetion afer a Koln let bse been acted to sho ese pipe batozn the
‘str suoor nun th cer conor. Pia a aleo be ade t istersagt all
front ok torrie ly x oinpone

‘heouipowea in Ether called an Boenttlondin x operas by pro.
cceing ond sormni wette The desien of ore BvexHander i skew