📄 rfc1195.ps
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%!PS-Adobe-2.1%%Creator: DECwrite V1.0%%+Copyright (c) 1989 DIGITAL EQUIPMENT CORPORATION. %%+All Rights Reserved.%%DocumentFonts: (atend)%%EndComments%%BeginProcSet DEC_WRITE 1.05/DEC_WRITE_dict 150 dict def DEC_WRITE_dict begin/$D save def/$I 0 def/$S 0def/$C matrix def/$R matrix def/$L matrix def/$E matrixdef/beginEPS{/level0 save def/showpage{}def/EPSname exchdef}def/endEPS{level0 restore}def/pat1{/px exch def/pa 8 array def 0 17{/py exch def/pw 4 string def 0 1 3{pw exch px py 1 getintervalputinterval}for pa py pw put}for}def/pat2{/pi exch def/cflag exch def savecflag 1 eq{eoclip}{clip}ifelse newpath{clippath pathbbox}stopped not{/phexch def/pw exch def/py exch def/px exch def/px px 3072 div floor 3072 muldef/py py 3072 div floor 3072 mul def px py translate/pw pw px sub 3072 divfloor 1 add cvi def/ph ph py sub 3072 div floor 1 add cvi def pw 3072 mulph 3072 mul scale/pw pw 32 mul def/ph ph 32 mul def/px 0 def/py 0 def pw phpi[pw 0 0 ph 0 0]{pa py get/px px 32 add def px pw ge{/px 0 def/py py 1 add8 mod def}if}pi type/booleantype eq{imagemask}{image}ifelse}ifrestore}def/PS{/_op exch def/_np 8 string def 0 1 7{/_ii exch def/num _op_ii get def _np 7 _ii sub num -4 bitshift PX num 15 and 4 bitshift -4bitshift PX 4 bitshift or put}for _np}def/PX{[15 7 11 3 13 5 9 1 14 6 10 212 4 8 0]exch get}def/FR{0.7200 0 $E defaultmatrix dtransform/yres exchdef/xres exch def xres dup mul yres dup mul add sqrt}def/SU{/_sf exchdef/_sa exch def/_cs exch def/_mm $C currentmatrix def/rm _sa $R rotatedef/sm _cs dup $L scale def sm rm _mm _mm concatmatrix _mm concatmatrix pop1 0 _mm dtransform/y1 exch def/x1 exch def/_vl x1 dup mul y1 dup mul addsqrt def/_fq FR _vl div def/_na y1 x1 atan def _mm 2 get _mm 1 get mul _mm0 get _mm 3 get mul sub 0 gt{{neg}/_sf load concatprocs/_sf exch def}if _fq_na/_sf load setscreen}def/BO{/_yb exch def/_xb exch def/_bv _bs _yb _bwmul _xb 8 idiv add get def/_mk 1 7 _xb 8 mod sub bitshift def _bv _mk and 0ne $I 1 eq xor}def/BF{DEC_WRITE_dict begin/_yy exch def/_xx exch def/_xi_xx 1 add 2 div _bp mul cvi def/_yi _yy 1 add 2 div _bp mul cvi def _xi _yiBO{/_nb _nb 1 add def 1}{/_fb _fb 1 add def 0}ifelseend}def/setpattern{/_cz exch def/_bw exch def/_bp exch def/_bs exch PSdef/_nb 0 def/_fb 0 def _cz 0/BF load SU{}settransfer _fb _fb _nb add divsetgray/$S 1 def}def/invertpattern{$S 0 eq{{1 exch sub}currenttransferconcatprocs settransfer}if}def/invertscreen{/$I 1 def/$S 0def}def/revertscreen{/$I 0 def}def/setrect{/$h exch def/$w exch def/$y exchdef/$x exch def newpath $x $y moveto $w $x add $y lineto $w $x add $h $yadd lineto $x $h $y add lineto closepath}def/concatprocs{/_p2 exch cvlitdef/_p1 exch cvlit def/_pn _p1 length _p2 length add array def _pn 0 _p1putinterval _pn _p1 length _p2 putinterval _pn cvx}def/OF/findfont loaddef/findfont{dup DEC_WRITE_dict exch known{DEC_WRITE_dict exch get}ifDEC_WRITE_dict/OF get exec}defmark/ISOLatin1Encoding 8#000 1 8#001{StandardEncoding exch get}for /emdash/endash8#004 1 8#025{StandardEncoding exch get}for /quotedblleft/quotedblright8#030 1 8#054{StandardEncoding exch get}for /minus 8#056 1 8#217{StandardEncoding exch get}for/dotlessi 8#301 1 8#317{StandardEncoding exch get}for/space/exclamdown/cent/sterling/currency/yen/brokenbar/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine/guillemotright/onequarter/onehalf/threequarters/questiondown/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis/yacute/thorn/ydieresis256 array astore def cleartomark /encodefont{findfont dup maxlength dict begin{1 index/FID ne{def}{poppop}ifelse}forall/Encoding exch def dup/FontName exch def currentdictdefinefont end}def/loads{/$/ISOLatin1Encoding load def/&/encodefont loaddef/*/invertpattern load def/+/revertscreen load def/-/invertscreen loaddef/:/concatprocs load def/^/setpattern load def/~/pat1 load def/_/pat2load def/@/setrect load def/A/arcn load def/B/ashow load def/C/curveto loaddef/D/def load def/E/eofill load def/F/findfont load def/G/setgray loaddef/H/closepath load def/I/clip load def/K/kshow load def/L/lineto loaddef/M/moveto load def/N/newpath load def/O/rotate load def/P/pop loaddef/R/grestore load def/S/gsave load def/T/translate load def/U/sub loaddef/V/div load def/W/widthshow load def/X/exch load def/Y/awidthshow loaddef/a/save load def/c/setlinecap load def/d/setdash load def/e/restore loaddef/f/setfont load def/g/initclip load def/h/show load def/i/setmiterlimitload def/j/setlinejoin load def/k/stroke load def/l/rlineto loaddef/m/rmoveto load def/n/currentfont load def/o/scalefont loaddef/p/currentpoint load def/r/currenttransfer load def/s/scale loaddef/t/setmatrix load def/u/settransfer load def/w/setlinewidth loaddef/x/matrix load def/y/currentmatrix load def}defend%%EndProcSet%%EndProlog%%BeginSetupDEC_WRITE_dict beginloadsversion cvi 23.0 gt {currentdict {dup type /arraytype eq{bind def} {pop pop} ifelse} forall} if0.0100 0.0100 s%%EndSetup/$P a Dg N0 79200 TSS8504 -68891 TN0 G0 -900 M/Helvetica-ISOLatin1 $/Helvetica & P/Helvetica-ISOLatin1 F 1200 o f(Callon) h26458 -900 M43625 -900 M(Page ) h(i) h0 -2337 M-8504 68891 TRRS8590 -12749 TN0 G4448 -1350 M/Times-Bold-ISOLatin1 $/Times-Bold & P/Times-Bold-ISOLatin1 F 1800 o f(Use of OSI IS\255IS for Routing in TCP/IP and Dual) h17975 -3350 M(Environments) h-8590 12749 TRS8504 -22707 TN0 G0 -1050 M/Times-Bold-ISOLatin1 F 1400 o f(Status of this Memo) h0 -3511 M/Times-Roman-ISOLatin1 $/Times-Roman & P/Times-Roman-ISOLatin1 F 1200 o f117.8 0 32 (This RFC specifies a protocol on the IAB Standards Track for the internet community, and re\255) W0 -4761 M176.9 0 32 (quests discussion and suggestions for improvements. Please refer to the current edition of the) W0 -6011 M40.0 0 32 ("IAB Official Protocol Standards" for the standardization state and status of this protocol. Distri\255) W0 -7261 M(bution of this memo is unlimited.) h0 -9822 M/Times-Bold-ISOLatin1 F 1400 o f(Abstract) h0 -12283 M/Times-Roman-ISOLatin1 F 1200 o f43.5 0 32 (This RFC specifies an integrated routing protocol, based on the OSI Intra\255Domain IS\255IS Routing) W0 -13533 M58.3 0 32 (Protocol, which may be used as an interior gateway protocol \(IGP\) to support TCP/IP as well as) W0 -14783 M60.3 0 32 (OSI. This allows a single routing protocol to be used to support pure IP environments, pure OSI) W0 -16033 M181.8 0 32 (environments, and dual environments. This specification was developed by the IS\255IS working) W0 -17283 M(group of the Internet Engineering Task Force. ) h0 -19694 M104.7 0 32 (The OSI IS\255IS protocol has reached a mature state, and is ready for implementation and opera\255) W0 -20944 M66.6 0 32 (tional use. The most recent version of the OSI IS\255IS protocol is contained in ISO DP 10589 [1].) W0 -22194 M137.9 0 32 (The proposed standard for using IS\255IS for dual routing will therefore make use of this version) W0 -23444 M118.8 0 32 (\(with a minor bug correction, as discussed in Annex B\). We expect that future versions of this) W0 -24694 M118.1 0 32 (proposed standard will upgrade to the final International Standard version of IS\255IS when avail\255) W0 -25944 M(able.) h0 -28355 M(Comments should be sent to ) h(\026) h(isis@merit.edu) h(\027.) h0 -31416 M/Times-Bold-ISOLatin1 F 1400 o f(Contents) h0 -35227 M709 -35227 Mn 0.857 o f(1) h4252 -35227 M(Introduction: Overview of the Protocol) h24500 -35227 M/Times-Roman-ISOLatin1 F 1000 o f(.......................................................................................) h46427 -35227 M/Times-Bold-ISOLatin1 F 1200 o f(1) h0 -37438 M4252 -37438 M/Times-Roman-ISOLatin1 F 1000 o f(1.1) h7087 -37438 M(What the Integrated IS-IS offers) h20500 -37438 M(.......................................................................................................) h46527 -37438 M(1) h0 -39399 M4252 -39399 M(1.2) h7087 -39399 M(Overview of the ISO IS-IS Protocol) h22000 -39399 M(.................................................................................................) h46527 -39399 M(2) h0 -41360 M4252 -41360 M(1.3) h7087 -41360 M(Overview of the Integrated IS-IS) h20750 -41360 M(......................................................................................................) h46527 -41360 M(5) h0 -43321 M4252 -43321 M(1.4) h7087 -43321 M(Support of Mixed Routing Domains) h21750 -43321 M(..................................................................................................) h46527 -43321 M(7) h-8504 22707 TRS37326 -3137 TN0 G9924 -900 M/Helvetica-ISOLatin1 F 1200 o f(Ross W. Callon) h2187 -2300 M(Digital Equipment Corporation) h9322 -3800 M(December, 1990) h0 -5237 M-37326 3137 TRS8771 -3137 TN0 G0 -900 M/Helvetica-ISOLatin1 F 1200 o f(Network Working Group) h0 -2400 M(Request for Comments: 1195) h0 -3837 M-8771 3137 TRshowpage$P e/$P a Dg N0 79200 TSS8642 -3084 TN0 G0 -900 M/Helvetica-ISOLatin1 $/Helvetica & P/Helvetica-ISOLatin1 F 1200 o f(RFC 1195 ) h15164 -900 M(OSI ISIS for IP and Dual Environments) h35840 -900 M( December 1990) h-8642 3084 TRS8642 -68833 TN0 G0 -900 M/Helvetica-ISOLatin1 F 1200 o f(Callon) h25502 -900 M43371 -900 M(Page ) h(ii) h0 -2337 M-8642 68833 TRRS8502 -8501 TN0 G0 -750 M4252 -750 M/Times-Roman-ISOLatin1 $/Times-Roman & P/Times-Roman-ISOLatin1 F 1000 o f(1.5) h7087 -750 M(Advantages of Using Integrated IS-IS) h22750 -750 M(..............................................................................................) h46531 -750 M(7) h0 -2746 M709 -2746 M/Times-Bold-ISOLatin1 $/Times-Bold & P/Times-Bold-ISOLatin1 F 1200 o f(2) h4252 -2746 M(Symbols and Abbreviations) h18500 -2746 M/Times-Roman-ISOLatin1 F 1000 o f(...............................................................................................................) h46431 -2746 M/Times-Bold-ISOLatin1 F 1200 o f(9) h0 -4992 M709 -4992 M(3) h4252 -4992 M(Subnetwork Independent Functions) h23000 -4992 M/Times-Roman-ISOLatin1 F 1000 o f(..........................................................................................) h45831 -4992 M/Times-Bold-ISOLatin1 F 1200 o f(10) h0 -7088 M4252 -7088 M/Times-Roman-ISOLatin1 F 1000 o f(3.1) h7087 -7088 M(Exchange of Routing Information) h20750 -7088 M(....................................................................................................) h46031 -7088 M(10) h0 -8934 M4252 -8934 M(3.2) h7087 -8934 M(Hierarchical Abbreviation of IP Reachability Information) h30250 -8934 M(..............................................................) h46031 -8934 M(11) h0 -10780 M4252 -10780 M(3.3) h7087 -10780 M(Addressing Routers in IS-IS Packets) h22250 -10780 M(..............................................................................................) h46031 -10780 M(14) h0 -12626 M4252 -12626 M(3.4) h7087 -12626 M(External Links) h13250 -12626 M(..................................................................................................................................) h46031 -12626 M(16) h0 -14472 M4252 -14472 M(3.5) h7087 -14472 M(Type of Service Routing) h17250 -14472 M(..................................................................................................................) h46031 -14472 M(17) h0 -16318 M4252 -16318 M(3.6) h7087 -16318 M(Multiple LSPs and SNPs) h17250 -16318 M(..................................................................................................................) h46031 -16318 M(17) h0 -18164 M4252 -18164 M(3.7) h7087 -18164 M(IP-Only Operation) h15000 -18164 M(...........................................................................................................................) h46031 -18164 M(18) h0 -20010 M4252 -20010 M(3.8) h7087 -20010 M(Encapsulation) h13000 -20010 M(...................................................................................................................................) h46031 -20010 M(18) h0 -21856 M4252 -21856 M(3.9) h7087 -21856 M(Authentication) h13250 -21856 M(..................................................................................................................................) h46031 -21856 M(19) h0 -23702 M4252 -23702 M(3.10) h7087 -23702 M(Order of Preference of Routes / Dijkstra Computation) h28750 -23702 M(....................................................................) h46031 -23702 M(19) h0 -25698 M709 -25698 M/Times-Bold-ISOLatin1 F 1200 o f(4) h4252 -25698 M(Subnetwork Dependent Functions) h22000 -25698 M/Times-Roman-ISOLatin1 F 1000 o f(..............................................................................................) h45831 -25698 M/Times-Bold-ISOLatin1 F 1200 o f(22) h0 -27794 M4252 -27794 M/Times-Roman-ISOLatin1 F 1000 o f(4.1) h7087 -27794 M(Link Demultiplexing) h15750 -27794 M(........................................................................................................................) h46031 -27794 M(22) h0 -29640 M4252 -29640 M(4.2) h7087 -29640 M(Multiple IP Addresses per Interface) h21500 -29640 M(.................................................................................................) h46031 -29640 M(23) h0 -31486 M4252 -31486 M(4.3) h7087 -31486 M(LANs, Designated Routers, and Pseudonodes) h25500 -31486 M(.................................................................................) h46031 -31486 M(23) h0 -33332 M
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