Policy Framework Configuration Guide - Juniper Networks

More documents

Recommendations

Info

Junos 10.4 Policy Framework Configuration Guide Routing Policy Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Routing Policy Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Applying a Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Routing Protocol Support for Import and Export Policies . . . . . . . . . . . . . . . . . . . . 27 Protocol Support for Import and Export Policies . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Applying a Routing Policy to Routing Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Applying Export Policies to the Forwarding Table . . . . . . . . . . . . . . . . . . . . . . . . . 29 Evaluating a Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 How a Routing Policy Is Evaluated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 How a Routing Policy Chain Is Evaluated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 How a Routing Policy Expression Is Evaluated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 How a Routing Policy Subroutine Is Evaluated . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Routing Policy Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Chapter 3 Routing Policy Configuration Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Configuring a Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Minimum Routing Policy Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Minimum Routing Policy Chain Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Minimum Subroutine Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Chapter 4 Routing Policy Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Defining Routing Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Configuring Match Conditions in Routing Policy Terms . . . . . . . . . . . . . . . . . . . . . . 41 Configuring Actions in Routing Policy Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Configuring Flow Control Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Configuring Actions That Manipulate Route Characteristics . . . . . . . . . . . . . 49 Configuring the Default Action in Routing Policies . . . . . . . . . . . . . . . . . . . . . 54 Example: Configuring the Default Action in a Routing Policy . . . . . . . . . . 55 Configuring a Final Action in Routing Policies . . . . . . . . . . . . . . . . . . . . . . . . . 56 Logging Matches to a Routing Policy Term . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Configuring Separate Actions for Routes in Route Lists . . . . . . . . . . . . . . . . . 57 Applying Routing Policies and Policy Chains to Routing Protocols . . . . . . . . . . . . 57 Effect of Omitting Ingress Match Conditions from Export Policies . . . . . . . . . 58 Applying Policy Expressions to Routes Exported from Routing Tables . . . . . . . . . 59 Policy Expression Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 How a Policy Expression Is Evaluated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Example: Evaluating Policy Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Applying Routing Policies to the Forwarding Table . . . . . . . . . . . . . . . . . . . . . . . . 64 Configuring Dynamic Routing Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Configuring Routing Policies and Policy Objects in the Dynamic Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Configuring Routing Policies Based on Dynamic Database Configuration . . . 66 Applying Dynamic Routing Policies to BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Preventing Reestablishment of BGP Peering Sessions After NSR Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Example: Configuring a BGP Export Policy That References a Dynamic Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Forwarding Packets to the Discard Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 x Copyright © 2010, Juniper Networks, Inc.
Table of Contents Testing Routing Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Example: Testing a Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Routing Policy Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Example: Defining a Routing Policy from BGP to IS-IS . . . . . . . . . . . . . . . . . . . . . . 73 Example: Using Routing Policy to Set a Preference . . . . . . . . . . . . . . . . . . . . . . . . 73 Example: Importing and Exporting Access and Access-Internal Routes in a Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Example: Exporting Routes to IS-IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Example: Applying Export and Import Policies to BGP Peer Groups . . . . . . . . . . . 75 Example: Defining a Routing Policy Based on the Number of BGP Communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Example: Applying a Prefix to Routes Learned from a Peer . . . . . . . . . . . . . . . . . . 76 Example: Redistributing BGP Routes with a Specific Community Tag into IS-IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Example: Redistributing OSPF Routes into BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Example: Exporting Direct Routes Into IS-IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Example: Exporting Internal IS-IS Level 1 Routes to Level 2 . . . . . . . . . . . . . . . . . . 77 Example: Exporting IS-IS Level 2 Routes to Level 1 . . . . . . . . . . . . . . . . . . . . . . . . . 78 Example: Assigning Different Forwarding Next-Hop LSPs to Different Destination Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Example: Grouping Destination Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Example: Grouping Source Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Example: Grouping Source and Destination Prefixes in a Forwarding Class . . . . . 81 Example: Accepting Routes with Specific Destination Prefixes . . . . . . . . . . . . . . . 82 Example: Accepting Routes from BGP with a Specific Destination Prefix . . . . . . . 82 Example: Using Routing Policy in an ISP Network . . . . . . . . . . . . . . . . . . . . . . . . . 83 Requesting a Single Default Route on the Customer 1 Router . . . . . . . . . . . . 84 Requesting Specific Routes on the Customer 2 Router . . . . . . . . . . . . . . . . . 85 Configuring a Peer Policy on ISP Router 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Configuring Private and Exchange Peers on ISP Router 1 and 2 . . . . . . . . . . . 89 Configuring Locally Defined Static Routes on the Exchange Peer 2 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Configuring Outbound and Generated Routes on the Private Peer 2 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Chapter 5 Extended Match Conditions Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Configuring AS Path Regular Expressions to Use as Routing Policy Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Configuring AS Path Regular Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Configuring a Null AS Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 How AS Path Regular Expressions Are Evaluated . . . . . . . . . . . . . . . . . . . . . . 101 Copyright © 2010, Juniper Networks, Inc. xi
Page 1 and 2: Junos ® OS Policy Framework Config
Page 3 and 4: END USER LICENSE AGREEMENT READ THI
Page 5 and 6: 12. Commercial Computer Software. T
Page 7 and 8: Abbreviated Table of Contents Part
Page 9: Table of Contents About This Guide
Page 13 and 14: Table of Contents Using Routing Pol
Page 15 and 16: Table of Contents Configuring Forwa
Page 17 and 18: Table of Contents Configuring Flow
Page 19 and 20: Table of Contents interface (Next-H
Page 21 and 22: List of Figures Part 1 Policy Frame
Page 23 and 24: List of Tables About This Guide . .
Page 25 and 26: About This Guide This preface provi
Page 27 and 28: About This Guide • MX Series •
Page 29 and 30: About This Guide Table 1: Notice Ic
Page 31 and 32: About This Guide or are covered und
Page 33 and 34: PART 1 Policy Framework • Introdu
Page 35 and 36: CHAPTER 1 Introduction to Policy Fr
Page 37 and 38: Chapter 1: Introduction to Policy F
Page 45 and 46: PART 2 Routing Policies • Introdu
Page 47 and 48: CHAPTER 2 Introduction to Routing P
Page 49 and 50: Chapter 2: Introduction to Routing
Page 61 and 62:
Chapter 2: Introduction to Routing
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
CHAPTER 3 Routing Policy Configurat
Page 69 and 70:
Chapter 3: Routing Policy Configura
Page 71 and 72:
CHAPTER 4 Routing Policy Configurat
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
CHAPTER 5 Extended Match Conditions
Page 129 and 130:
Chapter 5: Extended Match Condition
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
CHAPTER 6 Extended Actions Configur
Page 169 and 170:
Chapter 6: Extended Actions Configu
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
CHAPTER 7 Summary of Routing Policy
Page 199 and 200:
Chapter 7: Summary of Routing Polic
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
PART 3 Firewall Filters • Introdu
Page 215 and 216:
CHAPTER 8 Introduction to Firewall
Page 217 and 218:
Chapter 8: Introduction to Firewall
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
CHAPTER 9 Firewall Filter Configura
Page 225 and 226:
Chapter 9: Firewall Filter Configur
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
CHAPTER 10 Introduction to Traffic
Page 311 and 312:
Chapter 10: Introduction to Traffic
Page 313 and 314:
Page 315 and 316:
CHAPTER 11 Policer Configuration Si
Page 317 and 318:
Chapter 11: Policer Configuration [
Page 319 and 320:
Chapter 11: Policer Configuration I
Page 321 and 322:
Chapter 11: Policer Configuration C
Page 323 and 324:
Chapter 11: Policer Configuration u
Page 325 and 326:
Chapter 11: Policer Configuration T
Page 327 and 328:
Chapter 11: Policer Configuration
Page 329 and 330:
Chapter 11: Policer Configuration }
Page 331 and 332:
Chapter 11: Policer Configuration N
Page 333 and 334:
Chapter 11: Policer Configuration }
Page 335 and 336:
Page 337 and 338:
Chapter 11: Policer Configuration A
Page 339 and 340:
Chapter 11: Policer Configuration p
Page 341 and 342:
Page 343 and 344:
Chapter 11: Policer Configuration p
Page 345 and 346:
Chapter 11: Policer Configuration c
Page 347 and 348:
CHAPTER 12 Summary of Firewall Filt
Page 349 and 350:
Chapter 12: Summary of Firewall Fil
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
PART 4 Traffic Sampling, Forwarding
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
CHAPTER 15 Traffic Forwarding and M
Page 393 and 394:
Chapter 15: Traffic Forwarding and
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
Page 407 and 408:
Page 409 and 410:
Page 411 and 412:
Page 413 and 414:
Page 415 and 416:
CHAPTER 16 Summary of Traffic Sampl
Page 417 and 418:
Chapter 16: Summary of Traffic Samp
Page 419 and 420:
Page 421 and 422:
Page 423 and 424:
Page 425 and 426:
Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
Page 433 and 434:
Page 435 and 436:
Page 437 and 438:
Page 439 and 440:
Page 441 and 442:
Page 443 and 444:
Page 445 and 446:
Page 447 and 448:
Page 449 and 450:
Page 451 and 452:
Page 453 and 454:
Page 455 and 456:
Page 457 and 458:
Page 459 and 460:
Page 461 and 462:
Page 463 and 464:
Page 465 and 466:
Page 467 and 468:
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
Page 475 and 476:
Page 477 and 478:
Page 479 and 480:
Page 481 and 482:
Page 483 and 484:
Page 485 and 486:
Page 487 and 488:
Page 489 and 490:
Page 491 and 492:
PART 5 Indexes • Index on page 46
Page 493 and 494:
Index Symbols ! in policy expressio
Page 495 and 496:
Index Layer 2 bridging traffic (MX
Page 497 and 498:
Index input statement..............
Page 499 and 500:
Index P P2MP.......................
Page 501 and 502:
Index show policy damping command..
Page 503 and 504:
Index of Statements and Commands A
Page 505 and 506:
Index of Statements and Commands si
show all

Policy Framework Configuration Guide - Juniper Networks

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?