乐胖代购免代理版

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%%BeginDocument: FIG/fig2.ps 50 dict begin /arrowHeight 8 def /arrowWidth 4 def /none null def /numGraphicParameters 17 def /stringLimit 65535 def /Begin { save numGraphicParameters dict begin } def /End { end restore } def /SetB { dup type /nulltype eq { pop false /brushRightArrow idef false /brushLeftArrow idef true /brushNone idef } { /brushDashOffset idef /brushDashArray idef 0 ne /brushRightArrow idef 0 ne /brushLeftArrow idef /brushWidth idef false /brushNone idef } ifelse } def /SetCFg { /fgblue idef /fggreen idef /fgred idef } def /SetCBg { /bgblue idef /bggreen idef /bgred idef } def /SetF { /printSize idef /printFont idef } def /SetP { dup type /nulltype eq { pop true /patternNone idef } { /patternGrayLevel idef patternGrayLevel -1 eq { /patternString idef } if false /patternNone idef } ifelse } def /BSpl { 0 begin storexyn newpath n 1 gt { 0 0 0 0 0 0 1 1 true subspline n 2 gt { 0 0 0 0 1 1 2 2 false subspline 1 1 n 3 sub { /i exch def i 1 sub dup i dup i 1 add dup i 2 add dup false subspline } for n 3 sub dup n 2 sub dup n 1 sub dup 2 copy false subspline } if n 2 sub dup n 1 sub dup 2 copy 2 copy false subspline patternNone not brushLeftArrow not brushRightArrow not and and { ifill } if brushNone not { istroke } if 0 0 1 1 leftarrow n 2 sub dup n 1 sub dup rightarrow } if end } dup 0 4 dict put def /Circ { newpath 0 360 arc patternNone not { ifill } if brushNone not { istroke } if } def /CBSpl { 0 begin dup 2 gt { storexyn newpath n 1 sub dup 0 0 1 1 2 2 true subspline 1 1 n 3 sub { /i exch def i 1 sub dup i dup i 1 add dup i 2 add dup false subspline } for n 3 sub dup n 2 sub dup n 1 sub dup 0 0 false subspline n 2 sub dup n 1 sub dup 0 0 1 1 false subspline patternNone not { ifill } if brushNone not { istroke } if } { Poly } ifelse end } dup 0 4 dict put def /Elli { 0 begin newpath 4 2 roll translate scale 0 0 1 0 360 arc patternNone not { ifill } if brushNone not { istroke } if end } dup 0 1 dict put def /Line { 0 begin 2 storexyn newpath x 0 get y 0 get moveto x 1 get y 1 get lineto brushNone not { istroke } if 0 0 1 1 leftarrow 0 0 1 1 rightarrow end } dup 0 4 dict put def /MLine { 0 begin storexyn newpath n 1 gt { x 0 get y 0 get moveto 1 1 n 1 sub { /i exch def x i get y i get lineto } for patternNone not brushLeftArrow not brushRightArrow not and and { ifill } if brushNone not { istroke } if 0 0 1 1 leftarrow n 2 sub dup n 1 sub dup rightarrow } if end } dup 0 4 dict put def /Poly { 3 1 roll newpath moveto -1 add { lineto } repeat closepath patternNone not { ifill } if brushNone not { istroke } if } def /Rect { 0 begin /t exch def /r exch def /b exch def /l exch def newpath l b moveto l t lineto r t lineto r b lineto closepath patternNone not { ifill } if brushNone not { istroke } if end } dup 0 4 dict put def /Text { ishow } def /idef { dup where { pop pop pop } { exch def } ifelse } def /ifill { 0 begin gsave patternGrayLevel -1 ne { fgred bgred fgred sub patternGrayLevel mul add fggreen bggreen fggreen sub patternGrayLevel mul add fgblue bgblue fgblue sub patternGrayLevel mul add setrgbcolor eofill } { eoclip originalCTM setmatrix pathbbox /t exch def /r exch def /b exch def /l exch def /w r l sub ceiling cvi def /h t b sub ceiling cvi def /imageByteWidth w 8 div ceiling cvi def /imageHeight h def bgred bggreen bgblue setrgbcolor eofill fgred fggreen fgblue setrgbcolor w 0 gt h 0 gt and { l b translate w h scale w h true [w 0 0 h neg 0 h] { patternproc } imagemask } if } ifelse grestore end } dup 0 8 dict put def /istroke { gsave brushDashOffset -1 eq { [] 0 setdash 1 setgray } { brushDashArray brushDashOffset setdash fgred fggreen fgblue setrgbcolor } ifelse brushWidth setlinewidth originalCTM setmatrix stroke grestore } def /ishow { 0 begin gsave fgred fggreen fgblue setrgbcolor /fontDict printFont findfont printSize scalefont dup setfont def /descender fontDict begin 0 [FontBBox] 1 get FontMatrix end transform exch pop def /vertoffset 0 descender sub printSize sub printFont /Courier ne printFont /Courier-Bold ne and { 1 add } if def { 0 vertoffset moveto show /vertoffset vertoffset printSize sub def } forall grestore end } dup 0 3 dict put def /patternproc { 0 begin /patternByteLength patternString length def /patternHeight patternByteLength 8 mul sqrt cvi def /patternWidth patternHeight def /patternByteWidth patternWidth 8 idiv def /imageByteMaxLength imageByteWidth imageHeight mul stringLimit patternByteWidth sub min def /imageMaxHeight imageByteMaxLength imageByteWidth idiv patternHeight idiv patternHeight mul patternHeight max def /imageHeight imageHeight imageMaxHeight sub store /imageString imageByteWidth imageMaxHeight mul patternByteWidth add string def 0 1 imageMaxHeight 1 sub { /y exch def /patternRow y patternByteWidth mul patternByteLength mod def /patternRowString patternString patternRow patternByteWidth getinterval def /imageRow y imageByteWidth mul def 0 patternByteWidth imageByteWidth 1 sub { /x exch def imageString imageRow x add patternRowString putinterval } for } for imageString end } dup 0 12 dict put def /min { dup 3 2 roll dup 4 3 roll lt { exch } if pop } def /max { dup 3 2 roll dup 4 3 roll gt { exch } if pop } def /arrowhead { 0 begin transform originalCTM itransform /taily exch def /tailx exch def transform originalCTM itransform /tipy exch def /tipx exch def /dy tipy taily sub def /dx tipx tailx sub def /angle dx 0 ne dy 0 ne or { dy dx atan } { 90 } ifelse def gsave originalCTM setmatrix tipx tipy translate angle rotate newpath 0 0 moveto arrowHeight neg arrowWidth 2 div lineto arrowHeight neg arrowWidth 2 div neg lineto closepath patternNone not { originalCTM setmatrix /padtip arrowHeight 2 exp 0.25 arrowWidth 2 exp mul add sqrt brushWidth mul arrowWidth div def /padtail brushWidth 2 div def tipx tipy translate angle rotate padtip 0 translate arrowHeight padtip add padtail add arrowHeight div dup scale arrowheadpath ifill } if brushNone not { originalCTM setmatrix tipx tipy translate angle rotate arrowheadpath istroke } if grestore end } dup 0 9 dict put def /arrowheadpath { newpath 0 0 moveto arrowHeight neg arrowWidth 2 div lineto arrowHeight neg arrowWidth 2 div neg lineto closepath } def /leftarrow { 0 begin y exch get /taily exch def x exch get /tailx exch def y exch get /tipy exch def x exch get /tipx exch def brushLeftArrow { tipx tipy tailx taily arrowhead } if end } dup 0 4 dict put def /rightarrow { 0 begin y exch get /tipy exch def x exch get /tipx exch def y exch get /taily exch def x exch get /tailx exch def brushRightArrow { tipx tipy tailx taily arrowhead } if end } dup 0 4 dict put def /midpoint { 0 begin /y1 exch def /x1 exch def /y0 exch def /x0 exch def x0 x1 add 2 div y0 y1 add 2 div end } dup 0 4 dict put def /thirdpoint { 0 begin /y1 exch def /x1 exch def /y0 exch def /x0 exch def x0 2 mul x1 add 3 div y0 2 mul y1 add 3 div end } dup 0 4 dict put def /subspline { 0 begin /movetoNeeded exch def y exch get /y3 exch def x exch get /x3 exch def y exch get /y2 exch def x exch get /x2 exch def y exch get /y1 exch def x exch get /x1 exch def y exch get /y0 exch def x exch get /x0 exch def x1 y1 x2 y2 thirdpoint /p1y exch def /p1x exch def x2 y2 x1 y1 thirdpoint /p2y exch def /p2x exch def x1 y1 x0 y0 thirdpoint p1x p1y midpoint /p0y exch def /p0x exch def x2 y2 x3 y3 thirdpoint p2x p2y midpoint /p3y exch def /p3x exch def movetoNeeded { p0x p0y moveto } if p1x p1y p2x p2y p3x p3y curveto end } dup 0 17 dict put def /storexyn { /n exch def /y n array def /x n array def n 1 sub -1 0 { /i exch def y i 3 2 roll put x i 3 2 roll put } for } def Begin [ 0.923077 0 0 0.923077 0 0 ] concat /originalCTM matrix currentmatrix def Begin %I Pict [ 1 0 0 1 -164 -163 ] concat Begin %I Text 0 0 0 SetCFg /Helvetica 14 SetF [ 1 0 0 1 281 631 ] concat [ (MH) ] Text End Begin %I Elli 1 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 0 SetP [ 1 0 0 1 287 202 ] concat 11 425 19 19 Elli End Begin %I Elli 1 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 1 SetP [ 1 0 0 1 284 201 ] concat 11 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/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex /otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis /yacute/thorn/ydieresis ] def /Times-Bold reencodeISO def /none null def /numGraphicParameters 17 def /stringLimit 65535 def /Begin { save numGraphicParameters dict begin } def /End { end restore } def /SetB { dup type /nulltype eq { pop false /brushRightArrow idef false /brushLeftArrow idef true /brushNone idef } { /brushDashOffset idef /brushDashArray idef 0 ne /brushRightArrow idef 0 ne /brushLeftArrow idef /brushWidth idef false /brushNone idef } ifelse } def /SetCFg { /fgblue idef /fggreen idef /fgred idef } def /SetCBg { /bgblue idef /bggreen idef /bgred idef } def /SetF { /printSize idef /printFont idef } def /SetP { dup type /nulltype eq { pop true /patternNone idef } { dup -1 eq { /patternGrayLevel idef /patternString idef } { /patternGrayLevel idef } ifelse false /patternNone idef } ifelse } def /BSpl { 0 begin storexyn newpath n 1 gt { 0 0 0 0 0 0 1 1 true subspline n 2 gt { 0 0 0 0 1 1 2 2 false subspline 1 1 n 3 sub { /i exch def i 1 sub dup i dup i 1 add dup i 2 add dup false subspline } for n 3 sub dup n 2 sub dup n 1 sub dup 2 copy false subspline } if n 2 sub dup n 1 sub dup 2 copy 2 copy false subspline patternNone not brushLeftArrow not brushRightArrow not and and { ifill } if brushNone not { istroke } if 0 0 1 1 leftarrow n 2 sub dup n 1 sub dup rightarrow } if end } dup 0 4 dict put def /Circ { newpath 0 360 arc patternNone not { ifill } if brushNone not { istroke } if } def /CBSpl { 0 begin dup 2 gt { storexyn newpath n 1 sub dup 0 0 1 1 2 2 true subspline 1 1 n 3 sub { /i exch def i 1 sub dup i dup i 1 add dup i 2 add dup false subspline } for n 3 sub dup n 2 sub dup n 1 sub dup 0 0 false subspline n 2 sub dup n 1 sub dup 0 0 1 1 false subspline patternNone not { ifill } if brushNone not { istroke } if } { Poly } ifelse end } dup 0 4 dict put def /Elli { 0 begin newpath 4 2 roll translate scale 0 0 1 0 360 arc patternNone not { ifill } if brushNone not { istroke } if end } dup 0 1 dict put def /Line { 0 begin 2 storexyn newpath x 0 get y 0 get moveto x 1 get y 1 get lineto brushNone not { istroke } if 0 0 1 1 leftarrow 0 0 1 1 rightarrow end } dup 0 4 dict put def /MLine { 0 begin storexyn newpath n 1 gt { x 0 get y 0 get moveto 1 1 n 1 sub { /i exch def x i get y i get lineto } for patternNone not brushLeftArrow not brushRightArrow not and and { ifill } if brushNone not { istroke } if 0 0 1 1 leftarrow n 2 sub dup n 1 sub dup rightarrow } if end } dup 0 4 dict put def /Poly { 3 1 roll newpath moveto -1 add { lineto } repeat closepath patternNone not { ifill } if brushNone not { istroke } if } def /Rect { 0 begin /t exch def /r exch def /b exch def /l exch def newpath l b moveto l t lineto r t lineto r b lineto closepath patternNone not { ifill } if brushNone not { istroke } if end } dup 0 4 dict put def /Text { ishow } def /idef { dup where { pop pop pop } { exch def } ifelse } def /ifill { 0 begin gsave patternGrayLevel -1 ne { fgred bgred fgred sub patternGrayLevel mul add fggreen bggreen fggreen sub patternGrayLevel mul add fgblue bgblue fgblue sub patternGrayLevel mul add setrgbcolor eofill } { eoclip originalCTM setmatrix pathbbox /t exch def /r exch def /b exch def /l exch def /w r l sub ceiling cvi def /h t b sub ceiling cvi def /imageByteWidth w 8 div ceiling cvi def /imageHeight h def bgred bggreen bgblue setrgbcolor eofill fgred fggreen fgblue setrgbcolor w 0 gt h 0 gt and { l w add b translate w neg h scale w h true [w 0 0 h neg 0 h] { patternproc } imagemask } if } ifelse grestore end } dup 0 8 dict put def /istroke { gsave brushDashOffset -1 eq { [] 0 setdash 1 setgray } { brushDashArray brushDashOffset setdash fgred fggreen fgblue setrgbcolor } ifelse brushWidth setlinewidth originalCTM setmatrix stroke grestore } def /ishow { 0 begin gsave fgred fggreen fgblue setrgbcolor /fontDict printFont printSize scalefont dup setfont def /descender fontDict begin 0 [FontBBox] 1 get FontMatrix end transform exch pop def /vertoffset 1 printSize sub descender sub def { 0 vertoffset moveto show /vertoffset vertoffset printSize sub def } forall grestore end } dup 0 3 dict put def /patternproc { 0 begin /patternByteLength patternString length def /patternHeight patternByteLength 8 mul sqrt cvi def /patternWidth patternHeight def /patternByteWidth patternWidth 8 idiv def /imageByteMaxLength imageByteWidth imageHeight mul stringLimit patternByteWidth sub min def /imageMaxHeight imageByteMaxLength imageByteWidth idiv patternHeight idiv patternHeight mul patternHeight max def /imageHeight imageHeight imageMaxHeight sub store /imageString imageByteWidth imageMaxHeight mul patternByteWidth add string def 0 1 imageMaxHeight 1 sub { /y exch def /patternRow y patternByteWidth mul patternByteLength mod def /patternRowString patternString patternRow patternByteWidth getinterval def /imageRow y imageByteWidth mul def 0 patternByteWidth imageByteWidth 1 sub { /x exch def imageString imageRow x add patternRowString putinterval } for } for imageString end } dup 0 12 dict put def /min { dup 3 2 roll dup 4 3 roll lt { exch } if pop } def /max { dup 3 2 roll dup 4 3 roll gt { exch } if pop } def /midpoint { 0 begin /y1 exch def /x1 exch def /y0 exch def /x0 exch def x0 x1 add 2 div y0 y1 add 2 div end } dup 0 4 dict put def /thirdpoint { 0 begin /y1 exch def /x1 exch def /y0 exch def /x0 exch def x0 2 mul x1 add 3 div y0 2 mul y1 add 3 div end } dup 0 4 dict put def /subspline { 0 begin /movetoNeeded exch def y exch get /y3 exch def x exch get /x3 exch def y exch get /y2 exch def x exch get /x2 exch def y exch get /y1 exch def x exch get /x1 exch def y exch get /y0 exch def x exch get /x0 exch def x1 y1 x2 y2 thirdpoint /p1y exch def /p1x exch def x2 y2 x1 y1 thirdpoint /p2y exch def /p2x exch def x1 y1 x0 y0 thirdpoint p1x p1y midpoint /p0y exch def /p0x exch def x2 y2 x3 y3 thirdpoint p2x p2y midpoint /p3y exch def /p3x exch def movetoNeeded { p0x p0y moveto } if p1x p1y p2x p2y p3x p3y curveto end } dup 0 17 dict put def /storexyn { /n exch def /y n array def /x n array def n 1 sub -1 0 { /i exch def y i 3 2 roll put x i 3 2 roll put } for } def /SSten { fgred fggreen fgblue setrgbcolor dup true exch 1 0 0 -1 0 6 -1 roll matrix astore } def /FSten { dup 3 -1 roll dup 4 1 roll exch newpath 0 0 moveto dup 0 exch lineto exch dup 3 1 roll exch lineto 0 lineto closepath bgred bggreen bgblue setrgbcolor eofill SSten } def /Rast { exch dup 3 1 roll 1 0 0 -1 0 6 -1 roll matrix astore } def Begin [ 0.923077 0 0 0.923077 0 0 ] concat /originalCTM matrix currentmatrix def Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 172.22 575.095 ] concat [ (Mobile Host) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 170.631 553.095 ] concat [ (Collection I) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 365.357 573.369 ] concat [ (Mobile Host) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 360.316 549.643 ] concat [ (Collection I) ] Text End Begin %I CBSpl 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 86.311 137.234 ] concat 270 500 313 546 388 529 471 505 423 481 474 435 384 426 238 471 286 476 9 CBSpl End Begin %I CBSpl 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 112.204 136.371 ] concat 52 474 12 516 56 555 157 540 240 480 212 461 196 429 133 438 47 420 9 CBSpl End Begin %I Pict [ 1 0 0 1 39.7031 13.8098 ] concat Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 0 SetP [ 0.86311 0 0 0.86311 69.9119 173.485 ] concat 120 358 29 18 Elli End Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 1 SetP [ 0.86311 0 0 0.86311 67.5546 175.443 ] concat 120 358 29 18 Elli End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 156.708 493.262 ] concat [ (MH) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 181.434 484.262 ] concat [ (2) ] Text End End %I eop Begin %I Pict [ 1 0 0 1 13.8098 35.3875 ] concat Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 0 SetP [ 0.86311 0 0 0.86311 194.033 42.1253 ] concat 120 358 29 18 Elli End Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 1 SetP [ 0.86311 0 0 0.86311 191.675 44.0843 ] concat 120 358 29 18 Elli End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 279.965 362.902 ] concat [ (MH) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 305.137 355.369 ] concat [ (4) ] Text End End %I eop Begin %I Pict [ 1 0 0 1 39.703 29.3457 ] concat Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 0 SetP [ 0.86311 0 0 0.86311 248.808 160.77 ] concat 120 358 29 18 Elli End Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 1 SetP [ 0.86311 0 0 0.86311 246.45 162.729 ] concat 120 358 29 18 Elli End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 335.603 481.547 ] concat [ (MH) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 360 473.232 ] concat [ (6) ] Text End End %I eop Begin %I Pict [ 1 0 0 1 15.5359 23.304 ] concat Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 0 SetP [ 0.86311 0 0 0.86311 185.169 337.077 ] concat 120 358 29 18 Elli End Begin %I Elli 0 0 0 [] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg 1 SetP [ 0.86311 0 0 0.86311 182.812 339.036 ] concat 120 358 29 18 Elli End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 271.965 658.717 ] concat [ (MH) ] Text End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 296.589 648.684 ] concat [ (9) ] Text End End %I eop Begin %I MLine 1 0 0 [12 4] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 91.4897 143.276 ] concat 222 595 178 563 198 562 149 534 4 MLine End Begin %I MLine 1 0 0 [12 4] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 91.4897 143.276 ] concat 266 596 294 560 296 575 328 535 328 535 5 MLine End Begin %I MLine 1 0 0 [12 4] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 91.4897 143.276 ] concat 155 375 184 332 189 348 234 299 4 MLine End Begin %I MLine 1 0 0 [12 4] 0 SetB 0 0 0 SetCFg 1 1 1 SetCBg none SetP %I p n [ 0.86311 -0 -0 0.86311 100.121 153.634 ] concat 268 301 293 344 290 322 327 374 4 MLine End Begin %I Text 0 0 0 SetCFg Times-Bold 14 SetF [ 1 0 0 1 438.684 548.232 ] concat [ (I) ] Text End End %I eop showpage end %%EndDocument -53 1412 a endTexFig 97 2335 a Fq(Figure)g(2:)k(Receiving)13 b(\015uctuating)h(routes)-7 2426 y Fk(T)m(o)g(see)h(the)g(problem,)i(supp)q(ose)f(that)f(t)o(w)o(o)g (routes)g(with)h(iden-)-57 2472 y(tical)g(sequence)g(n)o(um)o(b)q(ers)g(are)f (receiv)o(ed)h(b)o(y)f(a)g(Mobile)i(Host,)d(but)-57 2517 y(in)h(the)f(wrong)g (order.)21 b(In)14 b(other)g(w)o(ords,)g(supp)q(ose)i(that)e Fj(M)t(H)866 2521 y Fi(4)897 2517 y Fk(re-)-57 2563 y(ceiv)o(es)i(the)e (higher)i(metric)f(next)g(hop)g(\014rst,)g(and)g(so)q(on)g(after)g(gets)-57 2609 y(another)d(next)f(hop)h(with)f(a)g(lo)o(w)o(er)g(metric)g(but)h(the)f (same)g(sequence)-57 2654 y(n)o(um)o(b)q(er.)20 b(This)14 b(could)h(happ)q (en)h(when)e(there)g(are)f(a)h(lot)g(of)g(Mobile)-57 2700 y(Hosts,)d (transmitting)i(their)f(up)q(dates)g(not)f(quite)g(regularly)m(.)19 b(Alter-)1041 636 y(nativ)o(ely)m(,)f(if)e(the)f(Mobile)j(Hosts)e(are)f (acting)i(indep)q(enden)o(tly)i(and)1041 681 y(with)12 b(mark)o(edly)h (di\013eren)o(t)g(transmission)h(in)o(terv)n(als,)g(the)e(situation)1041 727 y(could)17 b(o)q(ccur)e(with)h(corresp)q(ondingl)q(y)i(few)o(er)d(hosts.) 24 b(Supp)q(ose,)17 b(in)1041 773 y(an)o(y)e(ev)o(en)o(t,)h(in)f(Figure)h(2)f (that)g(there)g(are)g(enough)h(Mobile)h(Hosts)1041 818 y(to)i(cause)h(the)f (problem,)j(in)e(t)o(w)o(o)f(separate)h(collections)i(of)d(Mo-)1041 864 y(bile)e(Hosts)e(b)q(oth)h(connected)h(to)e(a)g(common)h(destination)i Fj(M)t(H)2012 868 y Fi(9)2029 864 y Fk(,)1041 910 y(but)e(with)g(no)g(other)g (Mobile)i(Hosts)e(in)g(common.)26 b(Supp)q(ose)17 b(fur-)1041 955 y(ther)11 b(that)f(all)i(Mobile)g(Hosts)f(are)f(transmitting)j(up)q (dates)e(appro)o(xi-)1041 1001 y(mately)h(ev)o(ery)f(15)g(seconds,)h(that)f (Mobile)h(Host)f Fj(M)t(H)1829 1005 y Fi(2)1857 1001 y Fk(has)g(a)f(route) 1041 1047 y(to)15 b Fj(M)t(H)1163 1051 y Fi(9)1196 1047 y Fk(with)g(12)h (hops,)g(and)g(Mobile)i(Host)d Fj(M)t(H)1815 1051 y Fi(6)1847 1047 y Fk(has)h(a)f(route)1041 1092 y(to)i Fj(M)t(H)1165 1096 y Fi(9)1200 1092 y Fk(with)h(11)f(hops.)31 b(Moreo)o(v)o(er,)19 b(supp)q(ose)g(that)e(the)h(rout-)1041 1138 y(ing)c(information)i(up)q(date)e (from)f Fj(M)t(H)1607 1142 y Fi(2)1637 1138 y Fk(arriv)o(es)i(at)e Fj(M)t(H)1882 1142 y Fi(4)1912 1138 y Fk(appro)o(x-)1041 1184 y(imately)19 b(10)f(seconds)g(b)q(efore)g(the)f(routing)i(information)h(up)q (date)1041 1229 y(from)e Fj(M)t(H)1210 1233 y Fi(6)1227 1229 y Fk(.)32 b(This)19 b(migh)o(t)g(o)q(ccur)f(ev)o(ery)h(time)g(that)f(a)g(new) g(se-)1041 1275 y(quence)f(n)o(um)o(b)q(er)g(is)f(issued)i(from)d(Mobile)j (Host)e Fj(M)t(H)1862 1279 y Fi(9)1879 1275 y Fk(.)26 b(In)15 b(fact,)1041 1321 y(the)j(time)g(di\013eren)o(tial)j(can)d(b)q(e)g(drastic)h (if)f(an)o(y)g(Mobile)h(Host)f(in)1041 1366 y(collection)e(I)q(I)c(b)q(egins) j(to)e(issue)h(its)g(sequence)g(n)o(um)o(b)q(er)g(up)q(dates)g(in)1041 1412 y(m)o(ultiple)h(incremen)o(tal)f(up)q(date)g(in)o(terv)n(als,)g(as)e(w)o (ould)h(happ)q(en,)h(for)1041 1458 y(instance,)g(when)e(there)h(are)f(to)q(o) g(man)o(y)h(hosts)g(with)f(new)h(sequence)1041 1503 y(n)o(um)o(b)q(er)19 b(up)q(dates)h(for)f(them)g(all)g(to)g(\014t)g(within)h(a)f(single)h(incre-) 1041 1549 y(men)o(tal)14 b(pac)o(k)o(et)g(up)q(date.)19 b(In)14 b(general,)g(the)g(larger)g(the)g(n)o(um)o(b)q(er)g(of)1041 1595 y(hops,)i(the)e(more)h(drastic)h(di\013eren)o(tials)i(b)q(et)o(w)o(een)d (deliv)o(ery)h(of)f(the)1041 1640 y(up)q(dates)f(can)g(b)q(e)f(exp)q(ected)h (in)g(Figure)g(2.)1091 1711 y(The)h(settling)i(time)e(data)h(is)g(stored)f (in)h(a)g(table)g(with)f(the)h(fol-)1041 1756 y(lo)o(wing)f(\014elds,)f(k)o (ey)o(ed)f(b)o(y)h(the)f(\014rst)g(\014eld:)1084 1850 y Fd(\017)21 b Fk(Destination)16 b(address)1084 1919 y Fd(\017)21 b Fk(Last)13 b(settling)i(time)1084 1988 y Fd(\017)21 b Fk(Av)o(erage)13 b(settling)i(time)1041 2081 y(The)j(settling)h(time)f(is)g(calculated)j(b)o (y)d(main)o(taining)i(a)e(running,)1041 2127 y(w)o(eigh)o(ted)11 b(a)o(v)o(erage)h(o)o(v)o(er)e(the)h(most)f(recen)o(t)h(up)q(dates)h(of)e (the)h(routes,)1041 2173 y(for)i(eac)o(h)g(destination.)1091 2243 y(Supp)q(ose)23 b(a)e(new)g(routing)i(information)g(up)q(date)f(arriv)o (es)h(at)1041 2289 y Fj(M)t(H)1114 2293 y Fi(4)1131 2289 y Fk(,)15 b(and)h(the)f(sequence)h(n)o(um)o(b)q(er)f(in)h(the)f(new)g(en)o(try) g(is)h(new)o(er)1041 2335 y(than)g(the)g(sequence)h(n)o(um)o(b)q(er)f(in)g (the)g(curren)o(tly)h(used)f(en)o(try)g(but)1041 2380 y(has)f(a)g(w)o(orse)f ($i.e.,)h(higher$)h(metric.)22 b(Then)15 b Fj(M)t(H)1790 2384 y Fi(4)1822 2380 y Fk(m)o(ust)g(use)g(the)1041 2426 y(new)c(en)o(try)g 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