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Checking references for intended status: Proposed Standard ---------------------------------------------------------------------------- (See RFCs 3967 and 4897 for information about using normative references to lower-maturity documents in RFCs) -- Looks like a reference, but probably isn't: '3' on line 81 == Unused Reference: 'OSPF-TE' is defined on line 251, but no explicit reference was found in the text == Outdated reference: A later version (-10) exists of draft-katz-yeung-ospf-traffic-04 == Outdated reference: A later version (-09) exists of draft-ietf-mpls-generalized-signaling-04 == Outdated reference: A later version (-09) exists of draft-ietf-ccamp-gmpls-routing-00 Summary: 9 errors (**), 0 flaws (~~), 6 warnings (==), 3 comments (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 CCAMP Working Group K. Kompella (Juniper Networks) 3 Internet Draft Y. Rekhter (Juniper Networks) 4 Expiration Date: July 2002 A. Banerjee (Calient Networks) 5 J. Drake (Calient Networks) 6 G. Bernstein (Ciena) 7 D. Fedyk (Nortel Networks) 8 E. Mannie (GTS Network) 9 D. Saha (Tellium) 10 V. Sharma (Metanoia, Inc.) 12 OSPF Extensions in Support of Generalized MPLS 14 draft-ietf-ccamp-ospf-gmpls-extensions-03.txt 16 1. Status of this Memo 18 This document is an Internet-Draft and is in full conformance with 19 all provisions of Section 10 of RFC2026. 21 Internet-Drafts are working documents of the Internet Engineering 22 Task Force (IETF), its areas, and its working groups. Note that 23 other groups may also distribute working documents as Internet- 24 Drafts. 26 Internet-Drafts are draft documents valid for a maximum of six months 27 and may be updated, replaced, or obsoleted by other documents at any 28 time. It is inappropriate to use Internet-Drafts as reference 29 material or to cite them other than as ``work in progress.'' 31 The list of current Internet-Drafts can be accessed at 32 http://www.ietf.org/ietf/1id-abstracts.txt 34 The list of Internet-Draft Shadow Directories can be accessed at 35 http://www.ietf.org/shadow.html. 37 2. Abstract 39 This document specifies encoding of extensions to the OSPF routing 40 protocol in support of Generalized Multi-Protocol Label Switching 41 (GMPLS). The description of the extensions is specified in [GMPLS- 42 ROUTING]. 44 3. Summary for Sub-IP Area 46 3.1. Summary 48 This document specifies encoding of extensions to the OSPF routing 49 protocol in support of Generalized Multi-Protocol Label Switching 50 (GMPLS). The description of the extensions is specified in [GMPLS- 51 ROUTING]. 53 3.2. Where does it fit in the Picture of the Sub-IP Work 55 This work fits squarely in either the CCAMP or OSPF box. 57 3.3. Why is it Targeted at this WG 59 This draft is targeted at the CCAMP or the OSPF WG, because this 60 draft specifies the extensions to the OSPF routing protocols in 61 support of GMPLS, because GMPLS is within the scope of the CCAMP WG, 62 and because OSPF is within the scope of the OSPF WG. 64 3.4. Justification 66 The WG should consider this document as it specifies the extensions 67 to the OSPF routing protocols in support of GMPLS. 69 4. Introduction 71 This document specifies extensions to the OSPF routing protocol in 72 support of carrying link state information for Generalized Multi- 73 Protocol Label Switching (GMPLS). The set of required enhancements to 74 OSPF are outlined in [GMPLS-ROUTING]. 76 5. OSPF Routing Enhancements 78 In this section we define the enhancements to the TE properties of 79 GMPLS TE links that can be announced in OSPF TE LSAs. The Traffic 80 Engineering (TE) LSA, which is an opaque LSA with area flooding scope 81 [3], has only one top-level Type/Length/Value (TLV) triplet and has 82 one or more nested TLVs for extensibility. The top-level TLV can 83 take one of two values (1) Router Address or (2) Link. In this 84 document, we enhance the sub-TLVs for the Link TLV in support of 85 GMPLS. Specifically, we add the following sub-TLVs: 87 1. Outgoing Interface Identifier, 88 2. Incoming Interface Identifier, 89 3. Link Protection Type, 90 4. Shared Risk Link Group, and 91 5. Interface Switching Capability Descriptor. 93 This brings the list of sub-TLVs of the TE Link TLV to: 95 Sub-TLV Type Length Name 96 1 1 Link type 97 2 4 Link ID 98 3 variable Local interface IP address 99 4 variable Remote interface IP address 100 5 4 Traffic engineering metric 101 6 4 Maximum bandwidth 102 7 4 Maximum reservable bandwidth 103 8 32 Unreserved bandwidth 104 9 4 Resource class/color 105 11 4 Link Local Identifier 106 12 4 Link Remote Identifier 107 14 4 Link Protection Type 108 15 variable Interface Switching Capability Descriptor 109 16 variable Shared Risk Link Group 110 32768-32772 - Reserved for Cisco-specific extensions 111 5.1. Link Local Identifier 113 An Outgoing Interface Identifier is a sub-TLV of the Link TLV with 114 type 11, and length 4. 116 5.2. Link Remote Identifier 118 An Incoming Interface Identifier is a sub-TLV of the Link TLV with 119 type 12, and length 4. 121 5.3. Link Protection Type 123 The Link Protection Type is a sub-TLV of the Link TLV, with type 14, 124 and length of four octets, the first of which is a bit vector 125 describing the protection capabilities of the link. They are: 127 0x01 Extra Traffic 129 0x02 Unprotected 131 0x04 Shared 133 0x08 Dedicated 1:1 135 0x10 Dedicated 1+1 137 0x20 Enhanced 139 0x40 Reserved 141 0x80 Reserved 143 5.4. Shared Risk Link Group (SRLG) 145 The SRLG is a sub-TLV of the Link TLV with type 16. The length is the 146 length of the list in octets. The value is an unordered list of 32 147 bit numbers that are the SRLGs that the link belongs to. The format 148 of the value field is as shown below: 150 0 1 2 3 151 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 152 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 153 | Shared Risk Link Group Value | 154 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 155 | ............ | 156 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 157 | Shared Risk Link Group Value | 158 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 160 5.5. Interface Switching Capability Descriptor 162 The Interface Switching Capability Descriptor is a sub-TLV of the 163 Link TLV with type 15. The length is the length of value field in 164 octets. The format of the value field is as shown below: 166 0 1 2 3 167 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 168 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 169 | Switching Cap | Encoding | Reserved | 170 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 171 | Max LSP Bandwidth at priority 0 | 172 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 173 | Max LSP Bandwidth at priority 1 | 174 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 175 | Max LSP Bandwidth at priority 2 | 176 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 177 | Max LSP Bandwidth at priority 3 | 178 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 179 | Max LSP Bandwidth at priority 4 | 180 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 181 | Max LSP Bandwidth at priority 5 | 182 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 183 | Max LSP Bandwidth at priority 6 | 184 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 185 | Max LSP Bandwidth at priority 7 | 186 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 187 | Switching Capability-specific information | 188 | (variable) | 189 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 191 The Switching Capability (Switching Cap) field contains one of the 192 following values: 194 1 Packet-Switch Capable-1 (PSC-1) 195 2 Packet-Switch Capable-2 (PSC-2) 196 3 Packet-Switch Capable-3 (PSC-3) 197 4 Packet-Switch Capable-4 (PSC-4) 198 51 Layer-2 Switch Capable (L2SC) 199 100 Time-Division-Multiplex Capable (TDM) 200 150 Lambda-Switch Capable (LSC) 201 200 Fiber-Switch Capable (FSC) 203 The Encoding field contains one of the values specified in Section 204 3.1.1 of [GMPLS-SIG]. 206 Maximum LSP Bandwidth is encoded as a list of eight 4 octet fields in 207 the IEEE floating point format, with priority 0 first and priority 7 208 last. The units are bytes (not bits!) per second. 210 The content of the Switching Capability specific information field 211 depends on the value of the Switching Capability field. 213 When the Switching Capability field is PSC-1, PSC-2, PSC-3, or PSC-4, 214 the specific information includes Interface MTU and Minimum LSP 215 Bandwidth. The Interface MTU is encoded as a two octets integer. The 216 Minimum LSP Bandwidth is is encoded in a 4 octets field in the IEEE 217 floating point format. The units are bytes (not bits!) per second. 219 When the Switching Capability field is L2SC, there is no specific 220 information. 222 When the Switching Capability field is TDM, the specific information 223 includes Minimum LSP Bandwidth, and an indication whether the 224 interface supports Standard or Arbitrary SONET/SDH. The Minimum LSP 225 Bandwidth is encoded in a 4 octets field in the IEEE floating point 226 format. The units are bytes (not bits!) per second. The indication 227 whether the interface supports Standard or Arbitrary SONET/SDH is 228 encoded as 1 octet. The value of this octet is 0 if the interface 229 supports Standard SONET/SDH, and 1 if the interface supports 230 Arbitrary SONET/SDH. 232 When the Switching Capability field is LSC, there is no specific 233 information. 235 The Interface Switching Capability Descriptor sub-TLV may occur more 236 than once within the Link TLV (this is needed to handle interfaces 237 that support multiple switching capabilities). 239 6. Security Considerations 241 The sub-TLVs proposed in this document does not raise any new 242 security concerns. 244 7. Acknowledgements 246 The authors would like to thank Suresh Katukam, Jonathan Lang and 247 Quaizar Vohra for their comments on the draft. 249 8. References 251 [OSPF-TE] Katz, D., Yeung, D., "Traffic Engineering Extensions to 252 OSPF", 253 draft-katz-yeung-ospf-traffic-04.txt (work in progress) 255 [GMPLS-SIG] "Generalized MPLS - Signaling Functional 256 Description", draft-ietf-mpls-generalized-signaling-04.txt (work 257 in progress) 259 [GMPLS-ROUTING] "Routing Extensions in Support of Generalized MPLS", 260 draft-ietf-ccamp-gmpls-routing-00.txt 262 9. Authors' Information 264 Kireeti Kompella 265 Juniper Networks, Inc. 266 1194 N. Mathilda Ave 267 Sunnyvale, CA 94089 268 Email: kireeti@juniper.net 270 Yakov Rekhter 271 Juniper Networks, Inc. 272 1194 N. Mathilda Ave 273 Sunnyvale, CA 94089 274 Email: yakov@juniper.net 275 Ayan Banerjee 276 Calient Networks 277 5853 Rue Ferrari 278 San Jose, CA 95138 279 Phone: +1.408.972.3645 280 Email: abanerjee@calient.net 282 John Drake 283 Calient Networks 284 5853 Rue Ferrari 285 San Jose, CA 95138 286 Phone: (408) 972-3720 287 Email: jdrake@calient.net 289 Greg Bernstein 290 Ciena Corporation 291 10480 Ridgeview Court 292 Cupertino, CA 94014 293 Phone: (408) 366-4713 294 Email: greg@ciena.com 296 Don Fedyk 297 Nortel Networks Corp. 298 600 Technology Park Drive 299 Billerica, MA 01821 300 Phone: +1-978-288-4506 301 Email: dwfedyk@nortelnetworks.com 303 Eric Mannie 304 GTS Network Services 305 RDI Department, Core Network Technology Group 306 Terhulpsesteenweg, 6A 307 1560 Hoeilaart, Belgium 308 Phone: +32-2-658.56.52 309 E-mail: eric.mannie@gtsgroup.com 310 Debanjan Saha 311 Tellium Optical Systems 312 2 Crescent Place 313 P.O. Box 901 314 Ocean Port, NJ 07757 315 Phone: (732) 923-4264 316 Email: dsaha@tellium.com 318 Vishal Sharma 319 Metanoia, Inc. 320 335 Elan Village Lane, Unit 203 321 San Jose, CA 95134-2539 322 Phone: +1 408-943-1794 323 Email: v.sharma@ieee.org