rfc1434.ps

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725 376 7 ( ) 9 SB734 376 15 (L) 21 SB755 376 7 (i) 10 SB765 376 15 (n) 20 SB785 376 14 (k) 19 SBgr32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB668 403 18 (C) 24 SB692 403 15 (o) 21 SB713 403 15 (n) 20 SB733 403 8 (t) 12 SB745 403 10 (r) 13 SB758 403 15 (o) 21 SB779 403 7 (l) 9 SBgr32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB708 430 8 (\() 11 SB719 430 14 (1) 19 SB738 430 8 (\)) 11 SBgr1 lc1 ljgs 242 56 852 363 CB1346 391 M -763 0 1 PPSngr838 391 M -27 7 0 -13 27 6 3 PP1 Fn32 0 0 16 16 0 0 0 15 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB902 367 12 (D) 16 SB918 367 10 (L) 14 SB932 367 12 (C) 16 SB948 367 4 ( ) 6 SB954 367 12 (R) 16 SB970 367 9 (e) 13 SB983 367 10 (q) 14 SB997 367 10 (u) 14 SB1011 367 9 (e) 12 SB1023 367 9 (s) 13 SB1036 367 5 (t) 8 SBgr6 2 SPgs 240 56 840 428 CB1349 455 M -763 0 1 PPSngr1095 455 M 28 -6 0 12 -28 -6 3 PP1 Fn32 0 0 16 16 0 0 0 15 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB874 431 12 (D) 16 SB890 431 10 (L) 14 SB904 431 12 (C) 16 SB920 431 4 ( ) 6 SB926 431 4 (I) 7 SB933 431 10 (n) 13 SB946 431 10 (d) 14 SB960 431 4 (i) 7 SB967 431 9 (c) 12 SB979 431 9 (a) 12 SB991 431 5 (t) 8 SB999 431 4 (i) 6 SB1005 431 10 (o) 14 SB1019 431 10 (n) 14 SBgr32 0 0 22 22 1 0 0 21 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB871 302 16 (D) 21 SB892 302 13 (L) 19 SB911 302 16 (C) 21 SB932 302 6 ( ) 9 SB941 302 5 (I) 8 SB949 302 13 (n) 19 SB968 302 7 (t) 10 SB978 302 12 (e) 16 SB994 302 8 (r) 12 SB1006 302 7 (f) 10 SB1016 302 12 (a) 17 SB1033 302 12 (c) 17 SB1050 302 12 (e) 16 SBgr0 lc0 lj6 2 SP253 227 186 fC228 181 615 550 B1 FSn32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont font0 0 0 fCgs 1469 588 459 237 CB652 596 18 (D) 24 SB676 596 14 (a) 19 SB695 596 8 (t) 11 SB706 596 14 (a) 19 SB725 596 7 ( ) 9 SB734 596 15 (L) 21 SB755 596 7 (i) 10 SB765 596 15 (n) 20 SB785 596 14 (k) 19 SBgr32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB668 623 18 (C) 24 SB692 623 15 (o) 21 SB713 623 15 (n) 20 SB733 623 8 (t) 12 SB745 623 10 (r) 13 SB758 623 15 (o) 21 SB779 623 7 (l) 9 SBgr32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB708 650 8 (\() 11 SB719 650 14 (2) 19 SB738 650 8 (\)) 11 SBgr1 lc1 ljgs 242 56 852 583 CB1346 610 M -763 0 1 PPSngr838 610 M -27 6 0 -12 27 6 3 PP1 Fn32 0 0 16 16 0 0 0 15 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB902 587 12 (D) 16 SB918 587 10 (L) 14 SB932 587 12 (C) 16 SB948 587 4 ( ) 6 SB954 587 12 (R) 16 SB970 587 9 (e) 13 SB983 587 10 (q) 14 SB997 587 10 (u) 14 SB1011 587 9 (e) 12 SB1023 587 9 (s) 13 SB1036 587 5 (t) 8 SBgr6 2 SPgs 240 56 840 648 CB1349 675 M -763 0 1 PPSngr1095 675 M 28 -6 0 12 -28 -6 3 PP1 Fn32 0 0 16 16 0 0 0 15 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB874 651 12 (D) 16 SB890 651 10 (L) 14 SB904 651 12 (C) 16 SB920 651 4 ( ) 6 SB926 651 4 (I) 7 SB933 651 10 (n) 13 SB946 651 10 (d) 14 SB960 651 4 (i) 7 SB967 651 9 (c) 12 SB979 651 9 (a) 12 SB991 651 5 (t) 8 SB999 651 4 (i) 6 SB1005 651 10 (o) 14 SB1019 651 10 (n) 14 SBgr32 0 0 25 25 0 0 0 24 /Helvetica-Bold /font19 ANSIFont fontgs 1469 588 459 237 CB1004 747 21 (M) 28 SB1032 747 15 (u) 20 SB1052 747 7 (l) 10 SB1062 747 8 (t) 11 SB1073 747 7 (i) 10 SB1083 747 8 (-) 11 SB1094 747 15 (p) 21 SB1115 747 10 (r) 13 SB1128 747 15 (o) 21 SB1149 747 8 (t) 11 SB1160 747 15 (o) 21 SB1181 747 14 (c) 18 SB1199 747 15 (o) 21 SB1220 747 7 (l) 10 SB1230 747 7 ( ) 9 SB1239 747 18 (R) 24 SB1263 747 15 (o) 21 SB1284 747 15 (u) 21 SB1305 747 8 (t) 11 SB1316 747 14 (e) 19 SB1335 747 10 (r) 13 SBgr32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font456 830 121 (Figure ) 121 SB577 830 21 (2) 21 SB598 830 403 (.  DLS System Diagram) 403 SB306 930 1653 (Before Data Link Switching can occur between two routers, they must establish a TCP connection) 1653 SB306 980 1734 (between them.  Each DLS will maintain a list of DLS capable routers and their status \(active/inactive\).) 1734 SB306 1030 1721 (Once this connection is established, the DLS will employ SSP to establish end-to-end circuits over the) 1721 SB306 1080 1674 (transport connection.  Within the transport connection is a specific set of  DLS message units.  The) 1674 SB306 1130 1429 (message formats and types for these PDUs are documented in the following sections.) 1429 SB306 1230 1765 (The default parameters associated with the TCP connections between Data Link Switches are as follows:) 1765 SB32 0 0 42 42 0 0 0 42 /Symbol fontgs 475 3165 0 0 CB456 1328 19 (\267) 19 SBgr32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font475 1332 263 (  Socket Family) 263 SB906 1332 170 (AF_INET) 170 SB1356 1332 326 (\(Internet protocols\)) 326 SB32 0 0 42 42 0 0 0 42 /Symbol fontgs 475 3165 0 0 CB456 1383 19 (\267) 19 SBgr32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font475 1387 229 (  Socket Type) 229 SB906 1387 301 (SOCK_STREAM) 301 SB1356 1387 257 (\(stream socket\)) 257 SB32 0 0 42 42 0 0 0 42 /Symbol fontgs 475 3165 0 0 CB456 1438 19 (\267) 19 SBgr32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font475 1442 336 (  Read Port Number) 336 SB906 1442 84 (2065) 84 SB32 0 0 42 42 0 0 0 42 /Symbol fontgs 475 3165 0 0 CB456 1493 19 (\267) 19 SBgr32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font475 1497 347 (  Write Port Number) 347 SB906 1497 84 (2067) 84 SB306 1600 1782 (Two or more Data Link Switches may be attached to the same LAN, consisting of a number of token-ring) 1782 SB306 1650 1791 (segments interconnected by source-routing bridges.  In this case, a TCP connection is not defined between) 1791 SB306 1700 1760 (bridges attached to the same LAN.  This will allow using systems to select one of the possible Data Link) 1760 SB306 1750 1749 (Switches in a similar manner to the selection of a bridge path through a source-routed bridged network.) 1749 SB306 1800 1760 (The virtual ring segment in each Data Link Switch attached to a common LAN must be configured with) 1760 SB306 1850 1618 (the same ring number.  This will prevent LAN frames sent by one Data Link Switch from being) 1618 SB306 1900 846 (propagated through the other Data Link Switches.) 846 SB32 0 0 50 50 0 0 0 47 /Helvetica-Bold /font19 ANSIFont font306 2025 573 (3.1. SSP Frame Formats) 573 SB32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font306 2136 1692 (The following diagrams show the two message headers for traffic between Data Link Switches.  The) 1692 SB306 2186 1762 (control message header is used for all messages except information messages.  The information message) 1762 SB306 2236 1725 (header is 16 bytes long, and the control message header is 72 bytes long.  The first sixteen bytes of the) 1725 SB306 2286 1219 (control message header are identical to the information message header.) 1219 SB306 2986 260 (Dixon & Kushi) 260 SB1965 2986 106 ([Page ) 106 SB2071 2986 21 (5) 21 SB2092 2986 14 (]) 14 SB1 #CEJ RS%%PageTrailer%%PageResources: font Helvetica-Bold%%+ font Symbol%%+ font Times-Bold%%+ font Times-Roman%%Page: 6 6%%PageResources: (atend)SS0 0 23 22 803 1100 300 SM32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont font0 0 0 fC306 86 196 (RFC:  1434) 196 SB928 86 555 (DLS:  Switch-to-Switch Protocol) 555 SB1900 86 206 (March 1993) 206 SB32 0 0 42 42 0 0 0 38 /Times-BoldItalic /font42 ANSIFont font306 236 427 (CONTROL MESSAGES) 427 SB32 0 0 42 42 0 0 0 38 /Times-Roman /font44 ANSIFont fontgs 895 56 317 333 CB336 341 281 (Version Number) 281 SBgrgs 896 56 1215 333 CB1236 341 250 (Reserved Field) 250 SBgr0 0 0 fC/fm 256 def5 5 311 333 B1 Fn5 5 311 333 B1 Fn894 5 317 333 B1 Fn5 5 1212 333 B1 Fn892 5 1218 333 B1 Fn5 5 2111 333 B1 Fn5 5 2111 333 B1 Fn5 49 311 339 B1 Fn2 49 1212 339 B1 Fn5 49 2111 339 B1 Fngs 895 53 317 389 CB336 394 276 (Message Length) 276 SBgr5 2 311 389 B1 Fn894 2 317 389 B1 Fn2 2 1212 389 B1 Fn895 2 1215 389 B1 Fn5 2 2111 389 B1 Fn5 49 311 392 B1 Fn2 49 1212 392 B1 Fn5 49 2111 392 B1 Fn255 255 255 fC0 0 0 hC/fm 1280 def<ff9f9ffffff9f9ff> p894 49 317 445 B1 Fn0 0 0 fCgs 895 53 317 442 CB336 447 495 (Remote Data Link Correlator) 495 SBgr255 255 255 fC895 49 1215 445 B1 Fn0 0 0 fC/fm 256 def5 2 311 442 B1 Fn894 2 317 442 B1 Fn2 2 1212 442 B1 Fn895 2 1215 442 B1 Fn5 2 2111 442 B1 Fn5 49 311 445 B1 Fn2 49 1212 445 B1 Fn5 49 2111 445 B1 Fn255 255 255 fC0 0 0 hC/fm 1280 def<ff9f9ffffff9f9ff> p894 49 317 498 B1 Fn895 49 1215 498 B1 Fn0 0 0 fC/fm 256 def5 2 311 495 B1 Fn894 2 317 495 B1 Fn2 2 1212 495 B1 Fn895 2 1215 495 B1 Fn5 2 2111 495 B1 Fn5 49 311 498 B1 Fn2 49 1212 498 B1 Fn5 49 2111 498 B1 Fn255 255 255 fC0 0 0 hC/fm 1280 def<ff9f9ffffff9f9ff> p894 49 317 551 B1 Fn0 0 0 fCgs 895 53 317 548 CB336 553 358 (Remote DLC Port ID) 358 SBgr255 255 255 fC895 49 1215 551 B1 Fn0 0 0 fC/fm 256 def5 2 311 548 B1 Fn894 2 317 548 B1 Fn2 2 1212 548 B1 Fn895 2 1215 548 B1 Fn5 2 2111 548 B1 Fn5 49 311 551 B1 Fn2 49 1212 551 B1 Fn5 49 2111 551 B1 Fn255 255 255 fC0 0 0 hC/fm 1280 def<ff9f9ffffff9f9ff> p894 49 317 604 B1 Fn895 49 1215 604 B1 Fn0 0 0 fC/fm 256 def5 2 311 601 B1 Fn894 2 317 601 B1 Fn2 2 1212 601 B1 Fn895 2 1215 601 B1 Fn5 2 2111 601 B1 Fn5 49 311 604 B1 Fn2 49 1212 604 B1 Fn5 49 2111 604 B1 Fngs 895 53 317 654 CB336 659 250 (Reserved Field) 250 SBgr5 2 311 654 B1 Fn894 2 317 654 B1 Fn2 2 1212 654 B1 Fn895 2 1215 654 B1 Fn5 2 2111 654 B1 Fn5 49 311 657 B1 Fn2 49 1212 657 B1 Fn5 49 2111 657 B1 Fngs 895 53 317 707 CB336 712 240 (Message Type) 240 SBgrgs 896 53 1215 707 CB1236 712 250 (Reserved Field) 250 SBgr5 2 311 707 B1 Fn894 2 317 707 B1 Fn2 2 1212 707 B1 Fn895 2 1215 707 B1 Fn5 2 2111 707 B1 Fn5 49 311 710 B1 Fn2 49 1212 710 B1 Fn5 49 2111 710 B1 Fngs 895 53 317 760 CB336 765 195 (Protocol ID) 195 SBgrgs 896 53 1215 760 CB1236 765 268 (Header Number) 268 SBgr5 2 311 760 B1 Fn894 2 317 760 B1 Fn2 2 1212 760 B1 Fn895 2 1215 760 B1 Fn5 2 2111 760 B1 Fn5 49 311 763 B1 Fn2 49 1212 763 B1 Fn5 49 2111 763 B1 Fngs 895 53 317 813 CB336 818 251 (Header Length) 251 SBgr5 2 311 813 B1 Fn894 2 317 813 B1 Fn2 2 1212 813 B1 Fn895 2 1215 813 B1 Fn5 2 2111 813 B1 Fn5 49 311 816 B1 Fn2 49 1212 816 B1 Fn5 49 2111 816 B1 Fngs 895 53 317 866 CB336 871 250 (Reserved Field) 250 SBgr5 2 311 866 B1 Fn894 2 317 866 B1 Fn2 2 1212 866 B1 Fn895 2 1215 866 B1 Fn5 2 2111 866 B1 Fn5 49 311 869 B1 Fn2 49 1212 869 B1 Fn5 49 2111 869 B1 Fngs 895 53 317 919 CB336 924 250 (Reserved Field) 250 SBgrgs 896 53 1215 919 CB1236 924 240 (Message Type) 240 SBgr5 2 311 919 B1 Fn894 2 317 919 B

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