Juniper JUNOSE 11.2.X IP SERVICES, JUNOSE 11.2.X Configuration Manual

JunosE™ Software for E Series™ Broadband Services Routers

IP Services Configuration Guide

Release

11.2.x

Published: 2010-06-29

Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net

Juniper Networks, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United States and other countries. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.

Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice.

Products made or sold by Juniper Networks or components thereof might be covered by one or more of the following patents that are owned by or licensed to Juniper Networks: U.S. Patent Nos. 5,473,599, 5,905,725, 5,909,440, 6,192,051, 6,333,650, 6,359,479, 6,406,312, 6,429,706, 6,459,579, 6,493,347, 6,538,518, 6,538,899, 6,552,918, 6,567,902, 6,578,186, and 6,590,785.

JunosE™ Software for E Series™ Broadband Services Routers IP Services Configuration Guide

Writing: Subash Babu Asokan, Mark Barnard, Bruce Gillham, Sarah Lesway-Ball, Brian Wesley Simmons, Fran Singer, Namrata Mehta Editing: Benjamin Mann Illustration: Nathaniel Woodward Cover Design: Edmonds Design

Revision History July 2010—FRS JunosE 11.2.x

The information in this document is current as of the date listed in the revision history.

YEAR 2000 NOTICE

Juniper Networks hardware and software products are Year 2000 compliant. The Junos OS has no known time-related limitations through the year 2038. However, the NTP application is known to have some difficulty in the year 2036.

END USER LICENSE AGREEMENT

READ THIS END USER LICENSE AGREEMENT (“AGREEMENT”) BEFORE DOWNLOADING, INSTALLING, OR USING THE SOFTWARE.

BY DOWNLOADING, INSTALLING, OR USING THE SOFTWARE OR OTHERWISE EXPRESSING YOUR AGREEMENT TO THE TERMS CONTAINED HEREIN, YOU (AS CUSTOMER OR IF YOU ARE NOT THE CUSTOMER, AS A REPRESENTATIVE/AGENT AUTHORIZED TO BIND THE CUSTOMER) CONSENT TO BE BOUND BY THISAGREEMENT. IF YOU DO NOTOR CANNOT AGREE TO THE TERMSCONTAINED HEREIN, THEN (A) DO NOT DOWNLOAD, INSTALL, OR USE THE SOFTWARE, AND (B) YOU MAY CONTACT JUNIPER NETWORKS REGARDING LICENSE TERMS.

1. The Parties. The parties to this Agreement are (i) Juniper Networks, Inc. (if the Customer’s principal office is located in the Americas) or Juniper Networks(Cayman)Limited(if the Customer’s principaloffice is locatedoutside the Americas)(such applicable entity beingreferred to herein as“Juniper”), and (ii)the person ororganizationthat originally purchased from Juniperor an authorized Juniper reseller the applicable license(s) for use of the Software (“Customer”) (collectively, the “Parties”).

2. The Software. In this Agreement, “Software” means the program modules and features of the Juniper or Juniper-supplied software, for which Customer has paid the applicable license or support fees to Juniper or an authorized Juniper reseller, or which was embedded by Juniper in equipment which Customer purchased from Juniper oran authorized Juniper reseller. “Software” also includes updates, upgrades and new releases of such software. “Embedded Software” means Software which Juniper has embedded in or loaded onto the Juniper equipment and any updates, upgrades, additions or replacements which are subsequently embedded in or loaded onto the equipment.

3. License Grant. Subject to payment of the applicablefeesand the limitations andrestrictions set forthherein, Juniper grantsto Customer a non-exclusive and non-transferable license, without right to sublicense, to use the Software, in executable form only, subject to the following use restrictions:

a. Customer shall use Embedded Software solely as embedded in, and for execution on, Juniper equipment originally purchased by Customer from Juniper or an authorized Juniper reseller.

b. Customer shall use the Software on a single hardware chassis having a single processing unit, or as many chassis or processing units for which Customer has paid the applicable license fees; provided, however, with respect to the Steel-Belted Radius or Odyssey Access Client software only, Customer shall use such Software on a single computer containing a single physical random access memory space and containing any number of processors. Use of the Steel-Belted Radius or IMS AAA software on multiple computers or virtual machines (e.g., Solaris zones) requires multiple licenses, regardless of whether such computers or virtualizations are physically contained on a single chassis.

c. Product purchase documents, paper or electronic user documentation, and/or the particular licenses purchased by Customer may specify limitstoCustomer’suse ofthe Software.Such limitsmay restrict use toa maximum number of seats, registeredendpoints, concurrent users, sessions, calls, connections, subscribers, clusters, nodes, realms, devices, links, ports or transactions, or require the purchase of separate licenses to use particular features, functionalities, services, applications, operations, or capabilities, or provide throughput, performance, configuration, bandwidth, interface, processing, temporal, or geographical limits. In addition, such limits may restrict the use of the Software to managing certain kinds of networks or require the Software to be used only in conjunction with other specific Software. Customer’s use of the Software shall be subject to all such limitations and purchase of all applicable licenses.

d. For any trial copy of the Software, Customer’s right to use the Software expires 30 days after download, installation or use of the Software. Customer may operate the Software after the 30-day trial period only if Customer pays for a license to do so. Customer may not extend or create an additional trial period by re-installing the Software after the 30-day trial period.

e. The Global Enterprise Edition of the Steel-Belted Radius software may be used by Customer only to manage access to Customer’s enterprise network. Specifically, service provider customers are expressly prohibited from using the Global Enterprise Edition of the Steel-Belted Radius software to support any commercial network access services.

The foregoing license is not transferable or assignable by Customer. No license is granted herein to any user who did not originally purchase the applicable license(s) for the Software from Juniper or an authorized Juniper reseller.

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Software in any manner that extends or is broader than the uses purchased by Customer from Juniper or an authorized Juniper reseller; (i) use Embedded Software on non-Juniper equipment; (j) use Embedded Software (or make it available for use) on Juniper equipment that the Customer did not originally purchase from Juniper or an authorized Juniper reseller; (k) disclose the results of testing or benchmarking of the Software to any third party without the prior written consent of Juniper; or (l) use the Software in any manner other than as expressly provided herein.

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8. Warranty, Limitation of Liability, Disclaimer of Warranty. The warranty applicable to the Software shall be as set forth in the warranty statementthataccompaniesthe Software (the “Warranty Statement”). Nothing inthis Agreement shallgive rise to anyobligation tosupport the Software. Support services may be purchased separately. Any such support shall be governed by a separate, written support services agreement. TO THE MAXIMUM EXTENT PERMITTED BY LAW, JUNIPER SHALL NOT BE LIABLE FOR ANY LOST PROFITS, LOSS OF DATA, OR COSTS ORPROCUREMENT OFSUBSTITUTE GOODSOR SERVICES,OR FORANYSPECIAL,INDIRECT, ORCONSEQUENTIALDAMAGES ARISING OUTOF THIS AGREEMENT,THE SOFTWARE,OR ANY JUNIPEROR JUNIPER-SUPPLIED SOFTWARE. IN NOEVENT SHALL JUNIPER BE LIABLE FOR DAMAGES ARISING FROM UNAUTHORIZED OR IMPROPER USE OF ANY JUNIPER OR JUNIPER-SUPPLIED SOFTWARE. EXCEPT AS EXPRESSLY PROVIDED IN THE WARRANTY STATEMENT TO THE EXTENT PERMITTED BY LAW, JUNIPER DISCLAIMS ANY AND ALL WARRANTIES IN AND TO THE SOFTWARE (WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE), INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT DOES JUNIPER WARRANT THAT THE SOFTWARE, OR ANY EQUIPMENT OR NETWORK RUNNING THE SOFTWARE, WILL OPERATE WITHOUT ERROR OR INTERRUPTION, OR WILL BE FREE OF VULNERABILITY TO INTRUSION OR ATTACK. In no event shall Juniper’s or its suppliers’ or licensors’ liability to Customer, whether in contract, tort (including negligence), breach of warranty, or otherwise, exceed the price paid by Customer for the Software that gave rise to the claim, or if the Software is embedded in another Juniper product, the price paid by Customer for such other product. Customer acknowledges and agrees that Juniper has set its prices and entered into this Agreement in reliance upon the disclaimers of warranty and the limitations of liability set forth herein, that the same reflect an allocation of risk between the Parties (including the risk that a contract remedy may fail of its essential purpose and cause consequential loss), and that the same form an essential basis of the bargain between the Parties.

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10. Taxes. All license fees payable under this agreement are exclusive of tax. Customer shall be responsible for paying Taxes arising from the purchase of the license, or importation or use of the Software. If applicable, valid exemption documentation for each taxing jurisdiction shall be provided to Juniper prior to invoicing, and Customer shall promptly notify Juniper if their exemption is revoked or modified. All payments made by Customer shall be net of any applicable withholding tax. Customer will provide reasonable assistance to Juniper in connection with such withholding taxes by promptly: providing Juniper with valid tax receipts and other required documentation showing Customer’s payment of any withholding taxes; completing appropriate applications that would reduce the amount of withholding tax to be paid; and notifying and assisting Juniper in any audit or tax proceeding related to transactions hereunder. Customer shall comply with all applicable tax laws and regulations, and Customer will promptly pay or reimburse Juniper for all costs and damages related to any liability incurred by Juniper as a result of Customer’s non-compliance or delay with its responsibilities herein. Customer’s obligations under this Section shall survive termination or expiration of this Agreement.

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12. Commercial Computer Software. The Software is “commercial computer software” and is provided with restricted rights. Use, duplication, or disclosure by the United States government is subject to restrictions set forth in this Agreement and as provided in DFARS

227.7201 through 227.7202-4, FAR 12.212, FAR 27.405(b)(2), FAR 52.227-19, or FAR 52.227-14(ALT III) as applicable.

13. Interface Information. To the extent required by applicable law, and at Customer's written request, Juniper shall provide Customer with the interface information needed to achieve interoperability between the Software and another independently created program, on payment of applicable fee, if any. Customer shall observe strict obligations ofconfidentiality with respect to such information and shall use such information in compliance with any applicable terms and conditions upon which Juniper makes such information available.

14. Third Party Software. Any licensor of Juniper whose software is embeddedin the Software and any supplier ofJuniper whose products or technology are embedded in (or services are accessed by) the Software shall be a third party beneficiary with respect to this Agreement, and such licensor or vendor shallhave theright to enforce this Agreement in its own nameas if it were Juniper. In addition, certain third party software may be provided with the Software and is subject to the accompanying license(s), if any, of its respective owner(s). To the extent portions of the Software are distributed under and subject to open source licenses obligating Juniper to make the source code for such portions publicly available (such as the GNU General Public License (“GPL”) or the GNU Library General Public License (“LGPL”)), Juniper will make such source code portions (including Juniper modifications, as appropriate) available upon request for a period of up to three years from the date of distribution. Such request can be made in writing to Juniper Networks, Inc., 1194 N. Mathilda Ave., Sunnyvale, CA 94089, ATTN: General Counsel. You may obtain a copy of the GPL at http://www.gnu.org/licenses/gpl.html, and a copy of the LGPL

at http://www.gnu.org/licenses/lgpl.html .

15. Miscellaneous. This Agreement shall be governed by the laws of the State of California without reference to its conflicts of laws principles. The provisions of the U.N. Convention for the International Sale of Goods shall not apply to this Agreement. For any disputes arising under this Agreement, the Parties hereby consent to the personal and exclusive jurisdiction of, and venue in, the state and federal courts within Santa Clara County, California. This Agreement constitutes the entire and sole agreement between Juniper and the Customer with respect to the Software, and supersedes all prior and contemporaneous agreements relating to the Software, whether oral or written (including any inconsistent terms contained in a purchase order), except that the terms of a separate written agreement executed by an authorized Juniper representative and Customer shall govern to the extent such terms are inconsistent or conflict with terms contained herein. No modification to this Agreement nor any waiver of any rights hereunder shall be effective unless expressly assented to in writing by the party to be charged. If any portion of this Agreement is held invalid, the Parties agree that such invalidity shall not affect the validity of the remainder of this Agreement. This Agreement and associated documentation has been written in the English language, and the Parties agree that the English version will govern. (For Canada: Les parties aux présentés confirment leur volonté que cette convention de même que tous les documents y compris tout avis qui s'y rattaché, soient redigés en langue anglaise. (Translation: The parties confirm that this Agreement and all related documentation is and will be in the English language)).

Abbreviated Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Part 1 Chapters

Chapter 1 Configuring Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2 Configuring NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Chapter 3 Configuring J-Flow Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Chapter 4 Configuring BFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Chapter 5 Configuring IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Chapter 6 Configuring Dynamic IPSec Subscribers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Chapter 7 Configuring ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Chapter 8 Configuring Digital Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Chapter 9 Configuring IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Chapter 10 Configuring Dynamic IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Chapter 11 IP Reassembly for Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Chapter 12 Securing L2TP and IP Tunnels with IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Chapter 13 Configuring the Mobile IP Home Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

Part 2 Index

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321

JunosE 11.2.x IP Services Configuration Guide

Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

E Series and JunosE Documentation and Release Notes . . . . . . . . . . . . . . . . . . . xxiii

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

E Series and JunosE Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Obtaining Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv

Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

Part 1 Chapters

Chapter 1 Configuring Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Route Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Route Map Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Multiple Values in a Match Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Negating Match Clauses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Matching a Community List Exactly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Removing Community Lists from a Route Map . . . . . . . . . . . . . . . . . . . . . . . . . 8

Matching a Policy List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Redistributing Access Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setting Multicast Bandwidths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Match Policy Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Access Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Filtering Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Configuration Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configuration Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configuration Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Filtering AS Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Configuration Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Using Access Lists in a Route Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Configuration Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Using Access Lists for PIM Join Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Clearing Access List Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Creating Table Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Using the Null Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Prefix Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Using a Prefix List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

JunosE 11.2.x IP Services Configuration Guide

Prefix Trees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Community Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Using Regular Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Managing the Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Troubleshooting Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Monitoring Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Chapter 2 Configuring NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

NAT Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Network and Address Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Understanding Address Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Address Assignment Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Order of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

PPTP and GRE Tunneling Through NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Packet Discard Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Configuring a NAT License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Limiting Translation Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Specifying Inside and Outside Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Defining Static Address Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Using a Prefix Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Extended Community Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

AS-path Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Community Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Community Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Metacharacters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Using Metacharacters as Literal Tokens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Regular Expression Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Module Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Traditional NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Basic NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

NAPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Bidirectional NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Twice NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Inside Local Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Inside Global Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Outside Local Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Outside Global Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Inside Source Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Outside Source Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Static Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Dynamic Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Inside-to-Outside Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Outside-to-Inside Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Creating Static Inside Source Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Creating Static Outside Source Translations . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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Defining Dynamic Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Creating Access List Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Defining Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Defining Dynamic Translation Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Creating Dynamic Inside Source Translation Rules . . . . . . . . . . . . . . . . . 74

Creating Dynamic Outside Source Translation Rules . . . . . . . . . . . . . . . . 74

Defining Translation Timeouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Clearing Dynamic Translations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

NAT Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

NAPT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Bidirectional NAT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Twice NAT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Cross-VRF Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Tunnel Configuration Through NAT Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Clients on an Inside Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Clients on an Outside Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

GRE Flows Through NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Monitoring NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Displaying the NAT License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Displaying Translation Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Displaying Translation Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Displaying Address Pool Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Displaying Inside and Outside Rule Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Chapter 3 Configuring J-Flow Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Interface Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Aggregation Caches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Flow Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Main Flow Cache Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Cache Flow Export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Aging Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Operation with NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Operation with High Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Before You Configure J-Flow Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Configuring Flow-Based Statistics Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Enabling Flow-Based Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Enabling Flow-Based Statistics on an Interface . . . . . . . . . . . . . . . . . . . . . . . 95

Defining a Sampling Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Setting Cache Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Defining Aging Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Specifying the Activity Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Specifying the Inactivity Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Specifying Flow Export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Configuring Aggregation Flow Caches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Monitoring J-Flow Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Clearing J-Flow Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

J-Flow show Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

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Chapter 4 Configuring BFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Bidirectional Forwarding Detection Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

BFD Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

BFD References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Configuring a BFD License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

BFD Version Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Configuring BFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Managing BFD Adaptive Timer Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Clearing BFD Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Monitoring BFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Chapter 5 Configuring IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

IPSec Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

IKE Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

How BFD Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Negotiation of the BFD Liveness Detection Interval . . . . . . . . . . . . . . . . . . . 108

System Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Viewing BFD Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

IPSec Terms and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Secure IP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

RFC 2401 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

IPSec Protocol Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Security Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Manual Versus Signaled Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Operational Virtual Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Transport Virtual Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Perfect Forward Secrecy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Inbound and Outbound SAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Transform Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Other Security Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

IP Security Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

ESP Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

AH Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

IPSec Maximums Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

DPD and IPSec Tunnel Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Tunnel Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Main Mode and Aggressive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Aggressive Mode Negotiations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

IKE Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Hash Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Authentication Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Diffie-Hellman Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

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IKE SA Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Generating Private and Public Key Pairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Configuring an IPSec License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Configuring IPSec Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Creating an IPSec Tunnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Configuring DPD and IPSec Tunnel Failover . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Defining an IKE Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Refreshing SAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Enabling Notification of Invalid Cookies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Configuration Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Monitoring IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

System Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

show Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Chapter 6 Configuring Dynamic IPSec Subscribers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Dynamic Connection Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Dynamic Connection Teardown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Dynamic IPSec Subscriber Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Licensing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Inherited Subscriber Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Using IPSec Tunnel Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Relocating Tunnel Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

User Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Creating an IPSec Tunnel Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Configuring IPSec Tunnel Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Limiting Interface Instantiations on Each Profile . . . . . . . . . . . . . . . . . . . . . . 174

Specifying IKE Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Setting the IKE Local Identity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Setting the IKE Peer Identity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Appending a Domain Suffix to a Username . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Overriding IPSec Local and Peer Identities for SA Negotiations . . . . . . . . . . 176

Specifying an IP Profile for IP Interface Instantiations . . . . . . . . . . . . . . . . . . 176

Defining the Server IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Specifying Local Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Defining IPSec Security Association Lifetime Parameters . . . . . . . . . . . . . . . 178

Defining User Reauthentication Protocol Values . . . . . . . . . . . . . . . . . . . . . . 178

Specifying IPSec Security Association Transforms . . . . . . . . . . . . . . . . . . . . 179

Specifying IPSec Security Association PFS and DH Group Parameters . . . . 179

Defining the Tunnel MTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Defining IKE Policy Rules for IPSec Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Specifying a Virtual Router for an IKE Policy Rule . . . . . . . . . . . . . . . . . . . . . 180

Defining Aggressive Mode for an IKE Policy Rule . . . . . . . . . . . . . . . . . . . . . . 181

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Monitoring IPSec Tunnel Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Chapter 7 Configuring ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Configuring ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Configuring ANCP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Configuring ANCP Neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Configuring Topology Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Configuring ANCP for QoS Adaptive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Triggering ANCP Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Adjusting the Data Rate Reported by ANCP for DSL Lines . . . . . . . . . . . . . . . . . . 194

Configuring Transactional Multicast for IGMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Triggering ANCP OAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Monitoring ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Chapter 8 Configuring Digital Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

IKE Authentication with Digital Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

System Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

show Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Access Topology Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Transactional Multicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

OAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Retrieval of DSL Line Rate Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Learning the Partition ID from an Access Node . . . . . . . . . . . . . . . . . . . . . . . 187

Creating a Listening TCP Socket for ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Accessing L2C Configuration Mode for ANCP . . . . . . . . . . . . . . . . . . . . . . . . 188

Defining the ANCP Session Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Learning the Access Node Partition ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Accessing L2C Neighbor Configuration Mode for ANCP . . . . . . . . . . . . . . . . 190

Defining an ANCP Neighbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Limiting Discovery Table Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Clearing ANCP Neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Creating an IGMP Session for ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

ANCP IGMP Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Complete Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

Digital Certificate Terms and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Signature Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Generating Public/Private Key Pairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Obtaining a Root CA Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Obtaining a Public Key Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Offline Certificate Enrollment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Online Certificate Enrollment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Authenticating the Peer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Verifying CRLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Table of Contents

File Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Certificate Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

IKE Authentication Using Public Keys Without Digital Certificates . . . . . . . . . . . . 212

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Public Key Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Configuring Digital Certificates Using the Offline Method . . . . . . . . . . . . . . . . . . . 213

Configuring Digital Certificates Using the Online Method . . . . . . . . . . . . . . . . . . . 219

Configuring Peer Public Keys Without Digital Certificates . . . . . . . . . . . . . . . . . . 224

Monitoring Digital Certificates and Public Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 228

Chapter 9 Configuring IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

GRE Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

DVMRP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

Module Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

ERX7xx Models, ERX14xx Models, and the ERX310 Router . . . . . . . . . . 238

E120 Router and E320 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Redundancy and Tunnel Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Configuring IP Tunnels to Forward IP Frames . . . . . . . . . . . . . . . . . . . . . . . . 243

Preventing Recursive Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Creating Multicast VPNs Using GRE Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . 244

Monitoring IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Chapter 10 Configuring Dynamic IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Dynamic IP Tunnel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Data MDT for Multicast VPNs and Dynamic IP Tunnels . . . . . . . . . . . . . . . . 252

Mobile IP and Dynamic IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Combining Dynamic and Static IP Tunnels in the Same Chassis . . . . . . . . . 253

Changing and Removing Existing Dynamic IP Tunnels . . . . . . . . . . . . . . . . . 253

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

Module Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

ERX7xx Models, ERX14xx Models, and the ERX310 Router . . . . . . . . . . 254

E120 Router and E320 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

Redundancy and Tunnel Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Configuring a Destination Profile for Dynamic IP Tunnels . . . . . . . . . . . . . . . . . . 255

Modifying the Default Destination Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Modifying the Configuration of the Default Destination Profile . . . . . . . 256

Configuring a Destination Profile for GRE Tunnels . . . . . . . . . . . . . . . . . . . . 256

Creating a Destination Profile for DVMRP Tunnels . . . . . . . . . . . . . . . . . . . . 256

Monitoring Dynamic IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

JunosE 11.2.x IP Services Configuration Guide

Chapter 11 IP Reassembly for Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Configuring IP Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Monitoring IP Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Chapter 12 Securing L2TP and IP Tunnels with IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

L2TP/IPSec Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

GRE/IPSec and DVMRP/IPSec Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Configuring IPSec Transport Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Monitoring DVMRP/IPSec, GRE/IPSec, and L2TP/IPSec Tunnels . . . . . . . . . . . . 294

Module Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

ERX7xx Models, ERX14xx Models, and the ERX310 Router . . . . . . . . . . 270

E120 Router and E320 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Setting Statistics Baselines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Displaying Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Tunnel Creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

IPSec Secured-Tunnel Maximums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Module Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Setting Up the Secure L2TP Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

L2TP with IPSec Control and Data Frames . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Compatibility and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Client Software Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Interactions with NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Interaction Between IPSec and PPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

LNS Change of Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

Group Preshared Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

NAT Passthrough Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

NAT Traversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

How NAT-T Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

UDP Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

UDP Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

NAT Keepalive Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Configuring and Monitoring NAT-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Single-Shot Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Configuration Tasks for Client PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Configuration Tasks for E Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Enabling IPSec Support for L2TP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Configuring NAT-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286

Configuring Single-Shot Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Setting Up the Secure GRE or DVMRP Connection . . . . . . . . . . . . . . . . . . . . 288

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Enabling IPSec Support for GRE and DVMRP Tunnels . . . . . . . . . . . . . . . . . 289

System Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294

show Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294

Table of Contents

Chapter 13 Configuring the Mobile IP Home Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

Mobile IP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

Mobile IP Agent Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304

Mobile IP Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304

Home Address Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304

Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

AAA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Subscriber Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306

Mobile IP Routing and Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306

Mobile IP Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Mobile IP References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Before You Configure the Mobile IP Home Agent . . . . . . . . . . . . . . . . . . . . . . . . . 307

Configuring the Mobile IP Home Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308

Monitoring the Mobile IP Home Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313

Part 2 Index

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321

JunosE 11.2.x IP Services Configuration Guide

List of Figures

Part 1 Chapters

Chapter 1 Configuring Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 1: Applying Route Maps to Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2: Filtering with Access Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 3: Filtering with AS-Path Access Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 4: Route Map Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 5: Community Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Chapter 2 Configuring NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 6: NAPT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Figure 7: Bidirectional NAT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Figure 8: Twice NAT Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Figure 9: Cross-VRF Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 10: PPTP Tunnels on an Inside Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Figure 11: PPTP Tunnels on an Outside Network . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Chapter 5 Configuring IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 12: IPSec Tunneling Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Figure 13: IPSec Tunneling Packet Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . 124

Figure 14: IPSec Security Parameters in Relation to the Secure IP Interface . . . . 125

Figure 15: Customer A's Corporate Frame Relay Network . . . . . . . . . . . . . . . . . . . 153

Figure 16: ISP-X Uses ERX Routers to Connect Corporate Offices over the

Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Figure 17: Connecting Customers Who Use Similar Address Schemes . . . . . . . . 156

Chapter 7 Configuring ANCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Figure 18: Using ANCP with an Access Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Chapter 9 Configuring IP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Figure 19: IP Tunneling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Figure 20: Transport and Tunnel Networks Using Different Routing Protocols . . 244

Chapter 11 IP Reassembly for Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Figure 21: Tunneling Through an IP Network That Fragments Packets . . . . . . . . 270

Chapter 12 Securing L2TP and IP Tunnels with IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Figure 22: L2TP with IPSec Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Figure 23: L2TP/IPSec Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Figure 24: L2TP Control Frame Encapsulated by IPSec . . . . . . . . . . . . . . . . . . . . 279

Figure 25: L2TP Data Frame Encapsulated by IPSec . . . . . . . . . . . . . . . . . . . . . . 279

Figure 26: L2TP Control Frame with NAT-T UDP Encapsulation . . . . . . . . . . . . . 281

Figure 27: L2TP Data Frame with NAT-T UDP Encapsulation . . . . . . . . . . . . . . . 282

JunosE 11.2.x IP Services Configuration Guide

Figure 28: IKE Packet with NAT-T UDP Encapsulation . . . . . . . . . . . . . . . . . . . . . 282

Figure 29: GRE/IPSec Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

List of Tables

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Table 1: Notice Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Part 1 Chapters

Chapter 1 Configuring Routing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 3: Match and Set Policy Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 4: Action Based on Well-Known Community Membership . . . . . . . . . . . . . . 37

Table 5: Supported Regular Expression Metacharacters . . . . . . . . . . . . . . . . . . . . 43

Table 6: Sample Regular Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Chapter 4 Configuring BFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Table 7: Determining BFD Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Chapter 5 Configuring IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table 8: IPSec Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table 9: Security Parameters Used on Secure IP Interfaces . . . . . . . . . . . . . . . . . 124

Table 10: Security Parameters per IPSec Policy Type . . . . . . . . . . . . . . . . . . . . . . 126

Table 11: Supported Transforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Table 12: Supported Security Transform Combinations . . . . . . . . . . . . . . . . . . . . . 131

Table 13: Initiator Proposals and Policy Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Chapter 8 Configuring Digital Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Table 14: Digital Certificate Terms and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . 205

Table 15: Outcome of IKE Phase 1 Negotiations . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Table 16: File Extensions (Offline Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Chapter 12 Securing L2TP and IP Tunnels with IPSec . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Table 17: Configuration and Monitoring Tasks for NAT-T . . . . . . . . . . . . . . . . . . . 283

Table 18: Differences in Handling Timeout Periods for L2TP/IPSec Tunnels . . . . 284

JunosE 11.2.x IP Services Configuration Guide

About the Documentation

•

E Series and JunosE Documentation and Release Notes on page xxiii

•

Audience on page xxiii

•

E Series and JunosE Text and Syntax Conventions on page xxiii

•

Obtaining Documentation on page xxv

•

Documentation Feedback on page xxv

•

Requesting Technical Support on page xxv

E Series and JunosE Documentation and Release Notes

For a list of related JunosE documentation, see

http://www.juniper.net/techpubs/software/index.html .

If the information in the latest release notes differs from the information in the documentation, follow the JunosE Release Notes.

To obtain the most current version of all Juniper Networks®technical documentation,

see the product documentation page on the Juniper Networks website at

http://www.juniper.net/techpubs/.

Audience

This guide is intended for experienced system and network specialists working with Juniper Networks E SeriesBroadband Services Routers in an Internet access environment.

E Series and JunosE Text and Syntax Conventions

Table 1 on page xxiv defines notice icons used in this documentation.

JunosE 11.2.x IP Services Configuration Guide

Table 1: Notice Icons

Table 2 on page xxiv defines text and syntax conventions that we use throughout the E Series and JunosE documentation.

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Indicates a situation that might result in loss of data or hardware damage.Caution

Alerts you to the risk of personal injury or death.Warning

Alerts you to the risk of personal injury from a laser.Laser warning

Table 2: Text and Syntax Conventions

Representscommandsand keywordsin text.Bold text like this

Fixed-width text like this

Italic text like this

Plus sign (+) linking key names

Syntax Conventions in the Command Reference Guide

Representsinformationas displayedon your terminal’s screen.

•

Emphasizes words.

•

Identifies variables.

•

Identifies chapter, appendix, and book names.

keys simultaneously.

ExamplesDescriptionConvention

•

Issue the clock source command.

•

Specify the keyword exp-msg.

host1(config)#traffic class low-loss1Represents text that the user must type.Bold text like this

host1#show ip ospf 2

Routing Process OSPF 2 with Router ID 5.5.0.250 Router is an Area Border Router (ABR)

•

There are two levels of access: user and privileged.

•

clusterId, ipAddress.

•

Appendix A, System Specifications

Press Ctrl + b.Indicates that you must press two or more

terminal lengthRepresents keywords.Plain text like this

mask, accessListNameRepresents variables.Italic text like this

Table 2: Text and Syntax Conventions (continued)

About the Documentation

ExamplesDescriptionConvention

| (pipe symbol)

or variable to the left or to the right of this symbol. (The keyword or variable can be either optional or required.)

[ ]* (brackets and asterisk)

that can be entered more than once.

Represent required keywords or variables.{ } (braces)

Obtaining Documentation

To obtain the most current version of all Juniper Networks technical documentation, see the Technical Documentation page on the Juniper Networks Web site at

http://www.juniper.net/.

To download complete sets of technical documentation to create your own documentation CD-ROMs or DVD-ROMs, see the Portable Libraries page at

http://www.juniper.net/techpubs/resources/index.html

diagnostic | lineRepresents a choice to select one keyword

[ internal | external ]Represent optional keywords or variables.[ ] (brackets)

[ level1 | level2 | l1 ]*Represent optional keywords or variables

{ permit | deny } { in | out }

{ clusterId | ipAddress }

Copies of the Management Information Bases (MIBs) for a particular software release are available for download in the software image bundle from the Juniper Networks Web site athttp://www.juniper.net/.

Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can improve the documentation to better meet your needs. Send your comments to

techpubs-comments@juniper.net, or fill out the documentation feedback form at

https://www.juniper.net/cgi-bin/docbugreport/. If you are using e-mail, be sure to include

the following information with your comments:

•

Document or topic name

•

URL or page number

•

Software release version

Requesting Technical Support

Technical productsupport isavailable through theJuniper NetworksTechnical Assistance Center (JTAC). If you are a customer with an active J-Care or JNASC support contract,

JunosE 11.2.x IP Services Configuration Guide

or are covered under warranty, and need post-sales technical support, you can access our tools and resources online or open a case with JTAC.

•

JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User Guide located at

http://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf .

•

Product warranties—For product warranty information, visit

http://www.juniper.net/support/warranty/ .

•

JTAC hours of operation—The JTAC centers have resources available 24 hours a day, 7 days a week, 365 days a year.

Self-Help Online Tools and Resources

For quick and easy problem resolution, Juniper Networks has designed an online self-service portal called the Customer Support Center (CSC) that provides you with the following features:

•

Find CSC offerings: http://www.juniper.net/customers/support/

•

Search for known bugs: http://www2.juniper.net/kb/

•

Find product documentation: http://www.juniper.net/techpubs/

•

Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/

•

Download the latest versions of software and review release notes:

http://www.juniper.net/customers/csc/software/

•

Search technical bulletins for relevant hardware and software notifications:

https://www.juniper.net/alerts/

•

Join and participate in the Juniper Networks Community Forum:

http://www.juniper.net/company/communities/

•

Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/

To verifyservice entitlement by product serialnumber, use ourSerial Number Entitlement (SNE) Tool: https://tools.juniper.net/SerialNumberEntitlementSearch/

Opening a Case with JTAC

You can open a case with JTAC on the Web or by telephone.

•

Use the Case Management tool in the CSC at http://www.juniper.net/cm/ .

•

Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).

For international or direct-dial options in countries without toll-free numbers, see

http://www.juniper.net/support/requesting-support.html .

PART 1

Chapters

•

Configuring Routing Policy on page 3

•

Configuring NAT on page 61

•

Configuring J-Flow Statistics on page 91

•

Configuring BFD on page 107

•

Configuring IPSec on page 119

•

Configuring Dynamic IPSec Subscribers on page 169

•

Configuring ANCP on page 185

•

Configuring Digital Certificates on page 205

•

Configuring IP Tunnels on page 237

•

Configuring Dynamic IP Tunnels on page 251

•

IP Reassembly for Tunnels on page 269

•

Securing L2TP and IP Tunnels with IPSec on page 275

•

Configuring the Mobile IP Home Agent on page 303

JunosE 11.2.x IP Services Configuration Guide

CHAPTER 1

Configuring Routing Policy

This chapter provides information about configuringrouting policyfor your E Series router. It describes routingpolicy configuration in general as itmight beused withvarious routing protocols,such as Border Gateway Protocol (BGP), Intermediate Systemto Intermediate System (IS-IS), Open Shortest Path First (OSPF), and Routing Information Protocol (RIP).

This chapter contains the following sections:

•

Overview on page 3

•

Platform Considerations on page 4

•

References on page 4

•

Route Maps on page 4

•

Match Policy Lists on page 19

•

Access Lists on page 20

•

Using the Null Interface on page 32

•

Prefix Lists on page 32

•

Prefix Trees on page 35

•

Community Lists on page 37

•

Using Regular Expressions on page 42

•

Managing the Routing Table on page 47

•

Troubleshooting Routing Policy on page 47

•

Monitoring Routing Policy on page 48

Overview

Routing policy determines howthe system handles the routes it receives from and sends to neighboring routers. In many cases, routing policy consists of the following:

•

Filtering routes

•

Accepting certain routes

•

Accepting and modifying other routes

JunosE 11.2.x IP Services Configuration Guide

•

Rejecting some routes

•

Determining the routing protocol used to distribute the routes

You can think of routing policy as a way to control the flow of routes into and out of the router.

The decision about which routes to accept from and advertise to various neighbors has an important impact on the traffic that crosses a network. Routing policy is used to enforce business agreements between two or more Internet service providers (ISPs) concerning the amount and type of traffic that is allowed to pass between them.

You can use one or more of the following mechanisms to configure routing policy:

•

“Route Maps” on page 4

•

“Match Policy Lists” on page 19

•

“Access Lists” on page 20

•

“Prefix Lists” on page 32

•

“Prefix Trees” on page 35

•

“Community Lists” on page 37

Platform Considerations

Configuring routing policies is supported on all E Series routers.

For information about the modules supported on E Series routers:

•

See the ERXModuleGuide for modulessupportedon ERX7xx models,ERX14xx models, and the Juniper Networks ERX310 Broadband Services Router.

•

See the E120 and E320 Module Guide for modules supported on the Juniper Networks E120 and E320 Broadband Services Routers.

References

For more information about the protocols discussed in this chapter, see their respective chapters in this guide and other guides within the JunosE documentation set, and to the References sections within those chapters.

Route Maps

You can useroutemaps to control and modify routing information and todefine conditions for redistributing routes between routing domains. Youcan applyroute maps to inbound, outbound, or redistribution routes. A routemap consists ofmatch clauses and set clauses.

Match clauses specify the attribute values that determine whether a route matches the route map. Aroute that has thesame attribute valuespasses the match condition. Routes that pass all the match conditions match the route map. You issue match commands to define the match conditions for a route map. You can specify the match conditions in

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Juniper JUNOSE 11.2.X IP SERVICES, JUNOSE 11.2.X Configuration Manual

Specifications and Main Features

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