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Junos® OS 12.3

Release Notes

Release 12.3R12
10 June 2016
Revision 5

These release notes accompany Release 12.3R12 of the Junos operating system (Junos OS). They describe device documentation and known problems with the software. Junos OS runs on all Juniper Networks ACX Series Universal Access Routers, EX Series Ethernet Switches, M Series, MX Series, and T Series routing platforms, and PTX Series Packet Transport Routers.

For the latest, most complete information about outstanding and resolved issues with the Junos OS software, see the Juniper Networks online software defect search application at http://prsearch.juniper.net.

You can also find these release notes on the Juniper Networks Junos OS Documentation Web page, which is located at http://www.juniper.net/techpubs/software/junos/.

Junos OS Release Notes for ACX Series Routers
New Features in Junos OS Release 12.3 for ACX Series Routers
Hardware
Firewall Filters
Interfaces and Chassis
Layer 2 and Layer 3 Protocols
Routing Protocols
Time Division Multiplexing (TDM)
Timing and Synchronization
Changes in Default Behavior and Syntax in Junos OS Release 12.3 for ACX Series Routers
Interfaces and Chassis
IPv6
Junos OS XML API and Scripting
Network Management and Monitoring
Security
Errata and Changes in Documentation for Junos OS Release 12.3 for ACX Series Routers
Errata
Class of Service (CoS)
Firewall Filters
Hardware
Routing Protocols
Known Limitations in Junos OS Release 12.3 for ACX Series Routers
Class of Service
Firewall Filters
Interfaces and Chassis
MPLS
Outstanding Issues in Junos OS Release 12.3 for ACX Series Routers
General Routing
Resolved Issues in Junos OS Release 12.3 for ACX Series Routers
Resolved Issues
Previous Releases
Release 12.3R11
Release 12.3R10
Release 12.3R9
Release 12.3R8
Release 12.3R7
Release 12.3R6
Release 12.3R5
Release 12.3R4
Release 12.3R2
Upgrade and Downgrade Instructions for Junos OS Release 12.3 for ACX Series Routers
Basic Procedure for Upgrading to Release 12.3
Upgrade and Downgrade Support Policy for Junos OS Releases
Downgrading from Release 12.3
Junos OS Release Notes for EX Series Switches
New Features in Junos OS Release 12.3 for EX Series Switches
Hardware
Access Control and Port Security
Class of Service (CoS)
Converged Networks (LAN and SAN)
Enhanced Layer 2 Software (ELS) on EX9200 Switches
Ethernet Switching and Spanning Trees
Firewall Filters and Routing Policy
High Availability
Infrastructure
Interfaces and Chassis
IPv6
J-Web Interface
Layer 2 and Layer 3 Protocols
Management and RMON
MPLS
Virtual Chassis
Changes in Default Behavior and Syntax in Junos OS Release 12.3 for EX Series Switches
Authentication and Access Control
Dynamic Host Configuration Protocol
Layer 2 Features
Hardware
High Availability
Infrastructure
Interfaces
Network Management and Monitoring
Limitations in Junos OS Release 12.3 for EX Series Switches
Access Control
Ethernet Switching and Spanning Trees
Firewall Filters
Hardware
High Availability
Infrastructure
Interfaces
J-Web Interface
Layer 2 and Layer 3 Protocols
Management and RMON
Multicast Protocols
Software Installation and Upgrade
Virtual Chassis
Outstanding Issues in Junos OS Release 12.3 for EX Series Switches
Access Control and Port Security
High Availability
Infrastructure
Interfaces
J-Web Interface
Multicast Protocols
Network Management and Monitoring
Routing Policy and Firewall Filters
Software Upgrade and Installation
Virtual Chassis
Resolved Issues in Junos OS Release 12.3 for EX Series Switches
Issues Resolved in Release 12.3R1
Issues Resolved in Release 12.3R2
Issues Resolved in Release 12.3R3
Issues Resolved in Release 12.3R4
Issues Resolved in Release 12.3R5
Issues Resolved in Release 12.3R6
Issues Resolved in Release 12.3R7
Issues Resolved in Release 12.3R8
Issues Resolved in Release 12.3R9
Issues Resolved in Release 12.3R10
Issues Resolved in Release 12.3R11
Issues Resolved in Release 12.3R12
Changes to and Errata in Documentation for Junos OS Release 12.3 for EX Series Switches
Changes to Junos OS for EX Series Switches Documentation
Errata
Upgrade and Downgrade Instructions for Junos OS Release 12.3 for EX Series Switches
Upgrade and Downgrade Support Policy for Junos OS Releases
Upgrading EX Series Switches Using NSSU
Upgrading to Junos OS Release 12.1R2 or Later with Existing VSTP Configurations
Upgrading from Junos OS Release 10.4R3 or Later
Upgrading from Junos OS Release 10.4R2 or Earlier
Junos OS Release Notes for M Series Multiservice Edge Routers, MX Series 3D Universal Edge Routers, and T Series Core Routers
New Features in Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Hardware
Class of Service
Forwarding and Sampling
High Availability (HA) and Resiliency
Interfaces and Chassis
Junos OS XML API and Scripting
Layer 2 Features
Layer 2 Tunneling Protocol
MPLS
Multicast
Power Management
Routing Policy and Firewall Filters
Routing Protocols
Security
Subscriber Access Management
System Logging
User Interface and Configuration
VPLS
VPNs
Changes in Default Behavior and Syntax, and for Future Releases in Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Changes in Default Behavior and Syntax
High Availability (HA) and Resiliency
Interfaces and Chassis
IPv6
J-Web
Junos OS XML API and Scripting
MPLS
Multicast
Network Address Translation (NAT)
Network Management and Monitoring
Routing Policy and Firewall Filters
Routing Protocols
Security
Services Applications
Subscriber Access Management
User Interface and Configuration
VPNs
Changes Planned for Future Releases
Routing Protocols
Known Behavior in Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Class of Service (CoS)
Hardware
MPLS
Routing Policy and Firewall Filters
Software Installation and Upgrade
Errata and Changes in Documentation for Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Errata
Changes to the Junos OS Documentation Set
Services Interfaces Configuration Guide
Outstanding Issues in Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Class of Service (CoS)
Forwarding and Sampling
General Routing
High Availability (HA) and Resiliency
Interfaces and Chassis
Layer 2 Features
MPLS
Multicast
Network Management and Monitoring
Platform and Infrstructure
Routing Protocols
Services Applications
Software Installation and Upgrade
Subscriber Access Management
User Interface and Configuration
VPNs
Resolved Issues in Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Resolved Issues
Previous Releases
Resolved Issues in Release 12.3R11
Resolved Issues in Release 12.3R10
Resolved Issues in Release 12.3R9
Resolved Issues in Release 12.3R8
Resolved Issues in Release 12.3R7
Resolved Issues in Release 12.3R6
Resolved Issues in Release 12.3R5
Resolved Issues in Release 12.3R4
Resolved Issues in Release 12.3R3
Resolved Issues in Release 12.3R2
Upgrade and Downgrade Instructions for Junos OS Release 12.3 for M Series, MX Series, and T Series Routers
Basic Procedure for Upgrading to Release 12.3
Upgrade and Downgrade Support Policy for Junos OS Releases
Upgrading a Router with Redundant Routing Engines
Upgrading Juniper Network Routers Running Draft-Rosen Multicast VPN to Junos OS Release 10.1
Upgrading the Software for a Routing Matrix
Upgrading Using Unified ISSU
Downgrading from Release 12.3
Junos OS Release Notes for PTX Series Packet Transport Routers
New Features in Junos OS Release 12.3 for PTX Series Packet Transport Routers
Hardware
Firewall Filters
Interfaces and Chassis
Network Management and Monitoring
User Interface and Configuration
Changes in Default Behavior and Syntax in Junos OS Release 12.3 for PTX Series Packet Transport Routers
Changes in Default Behavior and Syntax
IPv6
Junos OS XML API and Scripting
Network Management and Monitoring
Security
Errata and Changes in Documentation for Junos OS Release 12.3 for PTX Series Packet Transport Routers
Errata
Network Management and Monitoring
Outstanding Issues in Junos OS Release 12.3 for PTX Series Packet Transport Routers
General Routing
Unresolved xref
MPLS
Network Management and Monitoring
Routing Protocols
Resolved Issues in Junos OS Release 12.3 for PTX Series Packet Transport Routers
Current Release
Platform and Infrastructure
Previous Releases
Release 12.3R11
Release 12.3R10
Release 12.3R9
Release 12.3R8
Release 12.3R7
Release 12.3R6
Release 12.3R5
Release 12.3R4
Release 12.3R3
Release 12.3R2
Junos OS Documentation and Release Notes
Requesting Technical Support
Revision History

Modified: 2016-06-09