rfc1246.ps

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(This report documents experience with OSPF V2. This includes reports on interoperability test-) 72 279 T
(ing, \336eld experience, simulations and the current state of OSPF implementations. It also presents ) 72 265 T
-0.19 (a summary of the OSPF Management Information Base \050MIB\051, and a summary of OSPF authenti-) 72 251 P
(cation mechanism.) 72 237 T
(Please send comments to ospf@trantor) 72 211 T
(.umd.edu.) 258.27 211 T
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72 702 540 720 R
7 X
0 K
V
0 F
0 X
(RFC 1246) 72 712 T
(Experience with OSPF) 251.03 712 T
(July 1991) 493.02 712 T
72 69.05 540 81 R
7 X
V
0 X
([Moy]) 72 73 T
([Page 2]) 499.7 73 T
72 108 540 684 R
7 X
V
2 F
0 X
(T) 72 673.33 T
(able of Contents) 81.19 673.33 T
0 F
(1.0) 72 650 T
(Introduction) 108 650 T
(..............................................................................................................) 167.91 650 T
(3) 498 650 T
1 F
(1.1) 108 635.33 T
(Acknowledgments) 144 635.33 T
(...............................................................................................................) 219.88 635.33 T
(3) 499 635.33 T
0 F
(2.0) 72 616 T
(Documentation) 108 616 T
(.........................................................................................................) 182.9 616 T
(4) 498 616 T
(3.0) 72 596 T
(MIB) 108 596 T
(..........................................................................................................................) 131.93 596 T
(5) 498 596 T
(4.0) 72 576 T
(Security architecture) 108 576 T
(................................................................................................) 209.88 576 T
(7) 498 576 T
(5.0) 72 556 T
(Implementations) 108 556 T
(.......................................................................................................) 188.9 556 T
(8) 498 556 T
(6.0) 72 536 T
(Operational experience) 108 536 T
(............................................................................................) 221.88 536 T
(9) 498 536 T
1 F
(6.1) 108 521.33 T
(NSI) 144 521.33 T
(......................................................................................................................................) 162.41 521.33 T
(9) 499 521.33 T
(6.1.1) 144 509.33 T
(NSI\325s OSPF system) 180 509.33 T
(............................................................................................) 262.36 509.33 T
(10) 494.01 509.33 T
(6.1.2) 144 497.33 T
(NSI - Deployment analysis) 180 497.33 T
(.................................................................................) 289.84 497.33 T
(11) 494.01 497.33 T
(6.2) 108 483.33 T
(BARRNet) 144 483.33 T
(..........................................................................................................................) 187.4 483.33 T
(1) 494.38 483.33 T
(1) 499 483.33 T
(6.2.1) 144 471.33 T
(BARRNet\325s OSPF system) 180 471.33 T
(..................................................................................) 287.34 471.33 T
(13) 494.01 471.33 T
(6.2.2) 144 459.33 T
(BARRNet - Deployment analysis) 180 459.33 T
(.......................................................................) 314.83 459.33 T
(14) 494.01 459.33 T
(6.3) 108 445.33 T
(OARnet) 144 445.33 T
(..............................................................................................................................) 177.4 445.33 T
(14) 494.01 445.33 T
(6.3.1) 144 433.33 T
(OARnet\325s OSPF system) 180 433.33 T
(......................................................................................) 277.35 433.33 T
(15) 494.01 433.33 T
(6.3.2) 144 421.33 T
(OARnet - Deployment analysis) 180 421.33 T
(..........................................................................) 307.33 421.33 T
(17) 494.01 421.33 T
(6.4) 108 407.33 T
(Features exercised during operational deployment) 144 407.33 T
(...........................................................) 344.81 407.33 T
(20) 494.01 407.33 T
(6.5) 108 393.33 T
(Limitations of operational deployments) 144 393.33 T
(............................................................................) 302.33 393.33 T
(21) 494.01 393.33 T
(6.6) 108 379.33 T
(Conclusions) 144 379.33 T
(.......................................................................................................................) 194.89 379.33 T
(21) 494.01 379.33 T
0 F
(7.0) 72 360 T
( Interoperability T) 108 360 T
(esting) 195.1 360 T
(.........................................................................................) 224.88 360 T
(23) 492.01 360 T
1 F
(7.1) 108 345.33 T
(T) 144 345.33 T
(esting methodology) 149.41 345.33 T
(.........................................................................................................) 229.87 345.33 T
(23) 494.01 345.33 T
(7.2) 108 331.33 T
(First round \050Proteon, 9/25/90 - 9/29/90\051) 144 331.33 T
(...........................................................................) 304.83 331.33 T
(24) 494.01 331.33 T
(7.2.1) 144 319.33 T
(Problems found in the First round testing) 180 319.33 T
(...........................................................) 344.81 319.33 T
(25) 494.01 319.33 T
(7.3) 108 305.33 T
(Second round \050SURAnet, 12/17/90 - 12/21/90\051) 144 305.33 T
(................................................................) 332.32 305.33 T
(25) 494.01 305.33 T
(7.3.1) 144 293.33 T
(Official report of the Second round testing) 180 293.33 T
(........................................................) 352.31 293.33 T
(26) 494.01 293.33 T
(7.3.2) 144 281.33 T
(Problems found in the Second round testing) 180 281.33 T
(......................................................) 357.3 281.33 T
(28) 494.01 281.33 T
(7.4) 108 267.33 T
(Third round \0503com, 2/4/91 - 2/8/91\051) 144 267.33 T
(.................................................................................) 289.84 267.33 T
(28) 494.01 267.33 T
(7.4.1) 144 255.33 T
(Official report of the Third round testing) 180 255.33 T
(...........................................................) 344.81 255.33 T
(29) 494.01 255.33 T
(7.4.2) 144 243.33 T
(Problems found in the Third round testing) 180 243.33 T
(.........................................................) 349.81 243.33 T
(31) 494.01 243.33 T
(7.5) 108 229.33 T
(Overall: Features tested) 144 229.33 T
(.....................................................................................................) 239.87 229.33 T
(31) 494.01 229.33 T
(7.6) 108 215.33 T
(T) 144 215.33 T
(esting conclusions) 149.41 215.33 T
(...........................................................................................................) 224.88 215.33 T
(33) 494.01 215.33 T
(7.7) 108 201.33 T
(Future work) 144 201.33 T
(.......................................................................................................................) 194.89 201.33 T
(33) 494.01 201.33 T
0 F
(8.0) 72 182 T
(Simulation) 108 182 T
(..............................................................................................................) 161.91 182 T
(34) 492.01 182 T
1 F
(8.1) 108 167.33 T
(Simulator setup) 144 167.33 T
(..................................................................................................................) 207.39 167.33 T
(34) 494.01 167.33 T
(8.2) 108 153.33 T
(Simulation results) 144 153.33 T
(..............................................................................................................) 217.38 153.33 T
(34) 494.01 153.33 T
0 F
(9.0) 72 134 T
(Reference Documents) 108 134 T
(............................................................................................) 215.88 134 T
(36) 492.01 134 T
(10.0) 72 114 T
(People) 108 114 T
(.....................................................................................................................) 140.92 114 T
(37) 492.01 114 T
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72 702 540 720 R
7 X
0 K
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0 F
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(RFC 1246) 72 712 T
(Experience with OSPF) 251.03 712 T
(July 1991) 493.02 712 T
72 69.05 540 81 R
7 X
V
0 X
([Moy]) 72 73 T
([Page 3]) 499.7 73 T
72 108 540 684 R
7 X
V
2 F
0 X
(1.0  Intr) 72 673.33 T
(oduction) 127.23 673.33 T
0 F
-0.02 (This document addresses, for OSPF V2, the requirements set forth by the IAB/IESG for an Inter-) 72 646 P
-0.19 (net routing protocol to advance to Draft Standard state. This requirements are brie\337y summarized ) 72 632 P
(below) 72 618 T
(. The remaining sections of this report document how OSPF V2 satis\336es these require-) 100.53 618 T
(ments:) 72 604 T
(\245) 72 584 T
(The speci\336cation for the routing protocol must be well written such that independent, interop-) 85.54 584 T
(erable implementations can be developed solely based on the speci\336cation. For example, it ) 85.54 570 T
(should be possible to develop an interoperable implementation without consulting the original ) 85.54 556 T
(developers of the routing protocol.) 85.54 542 T
(\245) 72 522 T
-0.1 (A Management Information Base \050MIB\051 must be written for the protocol. The MIB must be in ) 85.54 522 P
(the standardization process, but does not need to be at the same level of standardization as the ) 85.54 508 T
(routing protocol.) 85.54 494 T
(\245) 72 474 T
(The security architecture of the protocol must be set forth explicitly) 85.54 474 T
(. The security architecture ) 409.19 474 T
-0.02 (must include mechanisms for authenticating routing messages and may include other forms of ) 85.54 460 P
(protection.) 85.54 446 T
(\245) 72 426 T
(T) 85.54 426 T
(wo or more interoperable implementations must exist. At least two must be written indepen-) 92.02 426 T
(dently) 85.54 412 T
(.) 114.74 412 T
(\245) 72 392 T
(There must be evidence that all features of the protocol have been tested, running between at ) 85.54 392 T
-0.21 (least two implementations. This must include that all of the security features have been demon-) 85.54 378 P
(strated to operate, and that the mechanisms de\336ned in the protocol actually provide the ) 85.54 364 T
(intended protection.) 85.54 350 T
(\245) 72 330 T
(There must be signi\336cant operational experience. This must include running in a moderate ) 85.54 330 T
(number routers con\336gured in a moderately complex topology) 85.54 316 T
(, and must be part of the opera-) 379.55 316 T
-0.07 (tional Internet. All signi\336cant features of the protocol must be exercised. In the case of an Inte-) 85.54 302 P
(rior Gateway Protocol \050IGP\051, both interior and exterior routes must be carried \050unless another ) 85.54 288 T
(mechanism is provided for the exterior routes\051. In the case of a Exterior Gateway Protocol ) 85.54 274 T
(\050EGP\051, it must carry the full complement of exterior routes. ) 85.54 260 T
(This report is a compilation of information obtained from many people. The reader is referred to ) 72 234 T
(speci\336c people when more information on a subject is available. People references are gathered ) 72 220 T
(into Section 10.0, in a format similar to that used in [4].) 72 206 T
3 F
(1.1  Acknowledgments) 72 172.67 T
0 F
-0.03 (The OSPF protocol has been developed by the OSPF W) 72 146 P
-0.03 (orking Group of the Internet Engineering ) 339.64 146 P
(T) 72 132 T
(ask Force. Many people have contributed to this report. They are listed in Section 10.0 of this ) 78.49 132 T
(report.) 72 118 T
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612 792 0 FMBEGINPAGE
72 702 540 720 R
7 X
0 K
V
0 F
0 X
(RFC 1246) 72 712 T
(Experience with OSPF) 251.03 712 T
(July 1991) 493.02 712 T
72 69.05 540 81 R
7 X
V
0 X
([Moy]) 72 73 T
([Page 4]) 499.7 73 T
72 108 540 684 R
7 X
V
2 F
0 X
(2.0  Documentation) 72 673.33 T
0 F
-0.01 (V) 72 646 P
-0.01 (ersion 1 of the OSPF protocol is documented in RFC 1) 79.33 646 P
-0.01 (131 [1]. OSPF V) 341.93 646 P
-0.01 (ersion 2, which super-) 421.84 646 P
-0.3 (sedes V) 72 632 P
-0.3 (ersion 1, has been documented in RFC 1247 [2]. The dif) 108 632 P
-0.3 (ferences between OSPF V) 375.29 632 P
-0.3 (ersion 1 ) 499.29 632 P
-0.22 (and V) 72 618 P
-0.22 (ersion 2 are relatively minor) 99.43 618 P
-0.22 (, and are listed in Appendix F of RFC 1247 [2]. All information ) 233.98 618 P
(presented in this report concerns OSPF V2 unless explicitly mentioned otherwise.) 72 604 T
-0.19 (The OSPF protocol was developed by the OSPF W) 72 578 P
-0.19 (orking Group of the Internet Engineering T) 315.35 578 P
-0.19 (ask ) 521.21 578 P
-0.12 (Force. This W) 72 564 P
-0.12 (orking Group has a mailing list, ) 139.75 564 P
4 F
-0.12 (ospf@trantor) 294.6 564 P
-0.12 (.umd.edu) 358.28 564 P
0 F
-0.12 (, where discussions of proto-) 402.25 564 P
(col features and operation are held. The OSPF W) 72 550 T
(orking Group also meets during the quarterly ) 307.19 550 T
(Internet Engineering T) 72 536 T
(ask Force conferences. Reports of these meeting are published in the ) 180.41 536 T
(IETF\325) 72 522 T
(s Proceedings. In addition, two reports on the OSPF protocol have been presented to the ) 100.65 522 T
(IETF plenary \050see \322Everything Y) 72 508 T
(ou Ever W) 230.67 508 T
(anted to Know about OSPFIGP\323 in [5] and \322OSPF ) 281.67 508 T
(Update\323 in [6]\051.) 72 494 T
(The OSPF protocol began under) 72 468 T
(going \336eld trials in Spring of 1990. A mailing list,) 227.01 468 T
4 F
( ospf-) 467.9 468 T
-0.47 ([e-mail]) 72 454 P
0 F
-0.47 (, was formed to discuss how the \336eld trials were proceeding. This mailing ) 188.62 454 P
(list is maintained by Ross V) 72 440 T
(each of the University of Illinois [rrv]. Archives of this list are also ) 205.61 440 T
(available. There has been quite a bit of discussion on the list concerning OSPF/RIP/EGP interac-) 72 426 T
(tion.) 72 412 T
(A OSPF V2 Management Information Base has also been developed and published in [3]. For ) 72 386 T
(more information, see Section 3.0 of this report.) 72 372 T
(There is a free implementation of OSPF available from the University of Maryland. This imple-) 72 346 T
(mentation was written by Rob Coltun [rcoltun]. Contact Rob for details.) 72 332 T
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612 792 0 FMBEGINPAGE
72 702 540 720 R
7 X
0 K
V
0 F
0 X
(RFC 1246) 72 712 T
(Experience with OSPF) 251.03 712 T
(July 1991) 493.02 712 T
72 69.05 540 81 R
7 X
V
0 X
([Moy]) 72 73 T
([Page 5]) 499.7 73 T
72 108 540 684 R
7 X
V
2 F
0 X
(3.0  MIB) 72 673.33 T
0 F
(An OSPF Management Information Base has been published in RFC 1248 [3]. The MIB was ) 72 646 T
(written by Rob Coltun [rcoltun] and Fred Baker [fbaker]. The OSPF MIB appears on the mgmt ) 72 632 T
(subtree as SMI standard-mib 13.) 72 618 T
(The OSPF MIB was originally developed by Rob Coltun of the University of Maryland, under ) 72 592 T
(contract to Advanced Computer Communications. A subset of his proposal was implemented to ) 72 578 T
(facilitate their development, and represents operational experience of a sort.) 72 564 T
(The MIB consists of a general variables group and ten tables:) 72 538 T
72 502.01 540 510 C
72 507.98 540 507.98 2 L
0.5 H
0 Z
0 X
0 K
N
0 0 612 792 C
5 F
0 X
0 K
(T) 72 513.33 T
(ABLE 1. OSPF MIB Organization) 77.93 513.33 T
(Gr) 144 491.34 T
(oup Name) 156.03 491.34 T
(Description) 288 491.34 T
1 F
(ospfGeneralGroup) 144 474.34 T
(General Global V) 288 474.34 T
(ariables) 357.94 474.34 T
( ) 72 458.34 T
(ospfAreaT) 144 458.34 T
(able) 186.04 458.34 T
(Area Descriptions) 288 458.34 T
( ) 72 442.34 T
(ospfStubAreaT) 144 442.34 T
(able) 204.37 442.34 T
(Default Metrics, by T) 288 442.34 T
(ype of Service ) 373.9 442.34 T
(ospfLsdbT) 144 426.34 T
(able) 186.61 426.34 T
(Link State Database) 288 426.34 T
(ospfAreaRangeT) 144 410.34 T
(able) 211.57 410.34 T
(Address Range Speci\336cations) 288 410.34 T
(ospfHostT) 144 394.34 T
(able) 185.5 394.34 T
(Directly connected Hosts) 288 394.34 T
( ) 72 378.34 T
(ospfIfT) 144 378.34 T
(able) 173.27 378.34 T
(OSPF Interface V) 288 378.34 T
(ariables) 358.5 378.34 T
( ) 72 362.34 T
(ospfIfMetricT) 144 362.34 T
(able) 199.92 362.34 T
(Interface Metrics, by T) 288 362.34 T
(ype of Service) 379.44 362.34 T
( ) 72 346.34 T
(ospfV) 144 346.34 T
(irtIfT) 167.83 346.34 T
(able) 188.77 346.34 T
(V) 288 346.34 T
(irtual Links) 294.62 346.34 T
(ospfNbrT) 144 330.34 T
(able) 182.16 330.34 T
(\050Non-virtual\051 OSPF Neighbors) 288 330.34 T
( ) 72 314.34 T
(ospfV) 144 314.34 T
(irtNbrT) 167.83 314.34 T
(able) 197.66 314.34 T
(V) 288 314.34 T
(irtual OSPF Neighbors) 294.62 314.34 T
0 F
-0.05 (As MIBs go, the OSPF MIB is quite lar) 72 289.01 P
-0.05 (ge; 105 objects. The following are some statistics describ-) 261.61 289.01 P
(ing the distribution of the MIB\325) 72 275.01 T
(s variables:) 222.93 275.01 T
(\245) 72 255.01 T
(1) 85.54 255.01 T
(1 de\336ne the above Group and T) 91.09 255.01 T
(ables) 242.13 255.01 T
(\245) 72 235.01 T
(10 de\336ne the Entry in a T) 85.54 235.01 T
(able) 207.28 235.01 T
(\245) 72 215.01 T
(7 are Counters) 85.54 215.01 T
(\245) 72 195.01 T
(6 are Gauges ) 85.54 195.01 T
(\245) 72 175.01 T
(68 objects mandated by the OSPF V) 85.54 175.01 T
(ersion 2 Speci\336cation) 258.77 175.01 T
(Section D.2 of the OSPF V2 speci\336cation [2] lists a set of required statistics that an implementa-) 72 149.01 T
-0.02 (tion must maintain. These statistics have been incorporated into the OSPF MIB. The MIB\325) 72 135.01 P
-0.02 (s thir-) 505.85 135.01 P
(teen Counters and Gauges enable evaluation of the OSPF protocol\325) 72 121.01 T
(s performance in an ) 393.45 121.01 T
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(RFC 1246) 72 712 T