Config Router

  • Google Sheets
  • CCNA Online training
    • CCNA
  • CISCO Lab Guides
    • CCNA Security Lab Manual With Solutions
    • CCNP Route Lab Manual with Solutions
    • CCNP Switch Lab Manual with Solutions
  • Juniper
  • Linux
  • DevOps Tutorials
  • Python Array
You are here: Home / Juniper / [M/MX/T] Warning message when performing Junos upgrade: ‘js: warning: Modifying reserved identifier junos-xxx is deprecated’

[M/MX/T] Warning message when performing Junos upgrade: ‘js: warning: Modifying reserved identifier junos-xxx is deprecated’

May 5, 2016 by Marques Brownlee

This article explains why warning messages such as ‘js: warning: Modifying reserved identifier junos-xxx is deprecated’ are seen during a Junos OS upgrade. Beginning with 14.1R4, Junos OS displays a warning when a reserved identifier is configured.

During Junos software upgrade process, the following messages are observed:

js: warning: Modifying reserved identifier junos-icmp-all is deprecated
 js: warning: Modifying reserved identifier junos-dns-udp is deprecated
 js: warning: Modifying reserved identifier junos-tftp is deprecated
 js: warning: Modifying reserved identifier junos-snmp-get is deprecated
 js: warning: Modifying reserved identifier junos-snmp-get-next is deprecated
 js: warning: Modifying reserved identifier junos-snmp-response is deprecated
 js: warning: Modifying reserved identifier junos-snmp-trap is deprecated
 js: warning: Modifying reserved identifier junos-citrix-winframe-udp is deprecated
 js: warning: Modifying reserved identifier junos-traceroute is deprecated

Junos OS reserves the prefix “junos-” for the identifiers of configurations defined within the junos-defaults configuration group. This means you cannot use “junos-xxx” when defining services/applications. However, the behavior to process this type of configuration is different in various Junos versions:

Before Junos 13.3R1, if you configured user-defined identifiers through the CLI using the reserved prefix, the commit would incorrectly succeed.

From Junos 13.3R1 to 14.1R3, configurations that contain the reserved prefix for user-defined identifiers other than the junos-defaults configuration group identifiers will correctly result in a commit error in the CLI.

Either of these behaviors will block any attempt to upgrade Junos version 13.3R1 or earlier to any later version of Junos OS.

Beginning with 14.1R4, Junos OS will display a warning when a reserved identifier is configured and commit will go through as shown below:

user@router# set applications application junos-tcp protocol tcp
 warning: Modifying reserved identifier junos-tcp is deprecated

[edit]
 user@router# commit
 commit complete

Related

Filed Under: Juniper

Recent Posts

  • How do I give user access to Jenkins?
  • What is docker volume command?
  • What is the date format in Unix?
  • What is the difference between ARG and ENV Docker?
  • What is rsync command Linux?
  • How to Add Music to Snapchat 2021 Android? | How to Search, Add, Share Songs on Snapchat Story?
  • How to Enable Snapchat Notifications for Android & iPhone? | Steps to Turn on Snapchat Bitmoji Notification
  • Easy Methods to Fix Snapchat Camera Not Working Black Screen Issue | Reasons & Troubleshooting Tips to Solve Snapchat Camera Problems
  • Detailed Procedure for How to Update Snapchat on iOS 14 for Free
  • What is Snapchat Spotlight Feature? How to Make a Spotlight on Snapchat?
  • Snapchat Hack Tutorial 2021: Can I hack a Snapchat Account without them knowing?

Copyright © 2025 · News Pro Theme on Genesis Framework · WordPress · Log in