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Copyright and Trademark Information


Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. in the United States and other countries. All other trademarks, service marks, registered marks, 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.

Junos® OSJ-Web Help Reference, Release 19.1R1

Copyright © 2019 Juniper Networks, Inc. All rights reserved.

Revision History

June 2017—Junos OS 15.1X49-D100

Nov 2017—Junos OS 17.4R1

Mar 2018—Junos OS 18.1R1

Jun 2018—Junos OS 18.2R1

Sep 2018—Junos OS 18.3R1

Dec 2018—Junos OS 18.4R1

March 2019—Junos OS 19.1R1

The information in this document is current as of the date on the title page.


Juniper Networks hardware and software products are Year 2000 compliant. 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.


The terms and conditions for using this software are described in the software license contained in the acknowledgment to your purchase order or, to the extent applicable, to any reseller agreement or end-user purchase agreement executed between you and Juniper Networks. By using this software, you indicate that you understand and agree to be bound by those terms and conditions. Generally speaking, the software license restricts the manner in which you are permitted to use the software and may contain prohibitions against certain uses. The software license may state conditions under which the license is automatically terminated. You should consult the license for further details. For complete product documentation, please see the Juniper Networks website at


The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with) Juniper Networks software. Use of such software is subject to the terms and conditions of the End User License Agreement (“EULA”) posted at By downloading, installing or using such software, you agree to the terms and conditions of that EULA.