Junos OS Release 18.1R3 User Manual
Release Notes: Junos®OS Release 18.1R3 for
the ACX Series, EX Series, MX Series, NFX
Series, PTX Series, QFX Series, SRX Series, and
Junos Fusion
1
13 January 2021
Contents
Introduction | 12
Junos OS Release Notes for ACX Series | 12
New and Changed Features | 13
Release 18.1R3 New and Changed Features | 13
Release 18.1R2 New and Changed Features | 13
Release 18.1R1 New and Changed Features | 13
Changes in Behavior and Syntax | 14
Interfaces and Chassis | 14
Known Behavior | 15
Known Issues | 15
Resolved Issues | 16
Resolved Issues: 18.1R3 | 16
Resolved Issues: 18.1R2 | 16
Resolved Issues: 18.1R1 | 17
Documentation Updates | 18
New Simplified Documentation Architecture | 18
Migration, Upgrade, and Downgrade Instructions | 19
Upgrade and Downgrade Support Policy for Junos OS Releases | 19
Product Compatibility | 20
Hardware Compatibility | 20
Junos OS Release Notes for EX Series Switches | 21
New and Changed Features | 21
Release 18.1R3-S3 New and Changed Features | 22
Release 18.1R3 New and Changed Features | 23
Release 18.1R2 New and Changed Features | 23
Release 18.1R1 New and Changed Features | 25
Changes in Behavior and Syntax | 30
Release 18.1R3-S10 Changes in Behavior and Syntax | 31
Release 18.1R3-S7 Changes in Behavior and Syntax | 31
Release 18.1R3 Changes in Behavior and Syntax | 32
Release 18.1R2 Changes in Behavior and Syntax | 34
Release 18.1R1 Changes in Behavior and Syntax | 34
2
Known Behavior | 35
Infrastructure | 36
Interfaces and Chassis | 36
Platform and Infrastructure | 36
Virtual Chassis | 37
Known Issues | 37
General Routing | 38
Infrastructure | 39
Layer 2 Features | 39
Platform and Infrastructure | 39
Resolved Issues | 40
Resolved Issues: 18.1R3 | 40
Resolved Issues: 18.1R2 | 42
Resolved Issues: 18.1R1 | 44
Documentation Updates | 48
New Simplified Documentation Architecture | 48
Migration, Upgrade, and Downgrade Instructions | 49
Upgrade and Downgrade Support Policy for Junos OS Releases | 49
Product Compatibility | 50
Hardware Compatibility | 50
Junos OS Release Notes for Junos Fusion Data Center | 51
New and Changed Features | 52
Release 18.1R3 New and Changed Features | 53
Release 18.1R2-S2 New and Changed Features | 53
Release 18.1R2 New and Changed Features | 57
Release 18.1R1 New and Changed Features | 57
Changes in Behavior and Syntax | 58
Known Behavior | 58
Junos Fusion Data Center | 59
Known Issues | 61
Junos Fusion Data Center | 61
Resolved Issues | 62
Resolved Issues: 18.1R3 | 62
Resolved Issues: 18.1R2 | 62
3
Resolved Issues: 18.1R1 | 63
Documentation Updates | 63
New Simplified Documentation Architecture | 63
Migration, Upgrade, and Downgrade Instructions | 64
Basic Procedure for Upgrading an Aggregation Device | 64
Preparing the Switch for Satellite Device Conversion | 66
Configuring Satellite Device Upgrade Groups | 68
Converting a Satellite Device to a Standalone Device | 69
Upgrade and Downgrade Support Policy for Junos OS Releases | 70
Downgrading from Junos OS Release 18.1 | 70
Product Compatibility | 71
Hardware and Software Compatibility | 71
Hardware Compatibility Tool | 71
Junos OS Release Notes for Junos Fusion Enterprise | 72
New and Changed Features | 72
Release 18.1R3 New and Changed Features | 73
Release 18.1R2 New and Changed Features | 73
Release 18.1R1 New and Changed Features | 73
Changes in Behavior and Syntax | 74
Known Behavior | 74
Known Issues | 75
Junos Fusion Enterprise | 75
Resolved Issues | 76
Resolved Issues: 18.1R3 | 76
Resolved Issues: 18.1R2 | 76
Resolved Issues: 18.1R1 | 77
Documentation Updates | 77
New Simplified Documentation Architecture | 77
Migration, Upgrade, and Downgrade Instructions | 78
Basic Procedure for Upgrading Junos OS on an Aggregation Device | 79
Upgrading an Aggregation Device with Redundant Routing Engines | 81
Preparing the Switch for Satellite Device Conversion | 81
Converting a Satellite Device to a Standalone Switch | 83
Upgrade and Downgrade Support Policy for Junos OS Releases | 83
4
Downgrading Junos OS | 83
Product Compatibility | 84
Hardware and Software Compatibility | 84
Hardware Compatibility Tool | 84
Junos OS Release Notes for Junos Fusion Provider Edge | 86
New and Changed Features | 86
Release 18.1R3 New and Changed Features | 88
Release 18.1R2 New and Changed Features | 88
Release 18.1R1 New and Changed Features | 88
Changes in Behavior and Syntax | 89
Known Behavior | 90
Junos Fusion | 90
Known Issues | 91
Junos Fusion | 91
Resolved Issues | 92
Resolved Issues: 18.1R3 | 92
Resolved Issues: 18.1R2 | 92
Resolved Issues: 18.1R1 | 93
Documentation Updates | 93
New Simplified Documentation Architecture | 94
Migration, Upgrade, and Downgrade Instructions | 94
Basic Procedure for Upgrading an Aggregation Device | 95
Upgrading an Aggregation Device with Redundant Routing Engines | 97
Preparing the Switch for Satellite Device Conversion | 98
Converting a Satellite Device to a Standalone Device | 99
Upgrading an Aggregation Device | 99
Upgrade and Downgrade Support Policy for Junos OS Releases | 99
Downgrading from Junos OS Release 18.1 | 100
Product Compatibility | 101
Hardware Compatibility | 101
Junos OS Release Notes for MX Series 5G Universal Routing Platforms | 102
New and Changed Features | 102
Release 18.1R3-S3 New and Changed Features | 103
Release 18.1R3 New and Changed Features | 104
5
Release 18.1R2 New and Changed Features | 104
Release 18.1R1 New and Changed Features | 104
Changes in Behavior and Syntax | 123
Release 18.1R3-S5 Changes in Behavior and Syntax | 123
Release 18.1R3 Changes in Behavior and Syntax | 123
Release 18.1R2 Changes in Behavior and Syntax | 127
Release 18.1R1 Changes in Behavior and Syntax | 128
Known Behavior | 132
EVPN | 133
General Routing | 133
Interfaces and Chassis | 134
MPLS | 135
Platform and Infrastructure | 135
Routing Protocols | 135
Services Applications | 135
Software Installation and Upgrade | 136
Subscriber Management and Services | 137
Known Issues | 137
Class of Service(CoS) | 138
EVPN | 138
Forwarding and Sampling | 139
General Routing | 139
Infrastructure | 144
Interfaces and Chassis | 144
Layer 2 Ethernet Services | 145
Layer 2 Features | 146
MPLS | 146
Platform and Infrastructure | 147
Routing Protocols | 150
Services Applications | 151
Software Installation and Upgrade | 151
Subscriber Management and Services | 152
VPNs | 152
Resolved Issues | 153
6
Resolved Issues: 18.1R3 | 153
Resolved Issues: 18.1R2 | 164
Resolved Issues: 18.1R1 | 171
Documentation Updates | 189
New Simplified Documentation Architecture | 189
Subscriber Management Access Network Guide | 189
Subscriber Management Provisioning Guide | 190
Migration, Upgrade, and Downgrade Instructions | 190
Basic Procedure for Upgrading to Release 18.1 | 191
Procedure to Upgrade to FreeBSD 11.x based Junos OS | 191
Procedure to Upgrade to FreeBSD 6.x based Junos OS | 194
Upgrade and Downgrade Support Policy for Junos OS Releases | 196
Upgrading a Router with Redundant Routing Engines | 196
Downgrading from Release 18.1 | 196
Product Compatibility | 197
Hardware Compatibility | 197
Junos OS Release Notes for NFX Series | 198
New and Changed Features | 199
Release 18.1R3 New and Changed Features | 199
Release 18.1R2 New and Changed Features | 199
Release 18.1R1 New and Changed Features | 199
Changes in Behavior and Syntax | 203
CLI | 204
Known Behavior | 204
Known Behavior: 18.1R3 | 205
Known Issues | 206
Known Issues: 18.1R3 | 206
Resolved Issues | 209
Resolved Issues: 18.1R3 | 209
Resolved Issues: 18.1R2 | 209
Resolved Issues: 18.1R1 | 210
Documentation Updates | 211
New Simplified Documentation Architecture | 211
Migration, Upgrade, and Downgrade Instructions | 212
7
Upgrade and Downgrade Support Policy for Junos OS Releases | 212
Basic Procedure for Upgrading to Release 18.1 | 212
Product Compatibility | 215
Hardware Compatibility | 215
Software Version Compatibility | 216
Junos OS Release Notes for PTX Series Packet Transport Routers | 218
New and Changed Features | 218
Release 18.1R3 New and Changed Features | 219
Release 18.1R2 New and Changed Features | 219
Release 18.1R1 New and Changed Features | 219
Changes in Behavior and Syntax | 227
Interfaces and Chassis | 227
Management | 229
Network Management and Monitoring | 229
Network Operations and Troubleshooting Automation | 229
Subscriber Management and Services | 230
Known Behavior | 231
General Routing | 231
Interfaces and Chassis | 232
Known Issues | 232
General Routing | 233
Infrastructure | 235
Interfaces and Chassis | 235
MPLS | 235
Resolved Issues | 235
Resolved Issues: 18.1R3 | 236
Resolved Issues: 18.1R2 | 237
Resolved Issues: 18.1R1 | 238
Documentation Updates | 241
New Simplified Documentation Architecture | 241
Migration, Upgrade, and Downgrade Instructions | 242
Upgrade and Downgrade Support Policy for Junos OS Releases | 242
Upgrading a Router with Redundant Routing Engines | 243
8
Basic Procedure for Upgrading to Junos OS Release 18.1 | 243
Product Compatibility | 247
Hardware Compatibility | 247
Junos OS Release Notes for the QFX Series | 248
New and Changed Features | 248
Release 18.1R3-S3 New and Changed Features | 249
Release 18.1R3 New and Changed Features | 252
Release 18.1R2 New and Changed Features | 254
Release 18.1R1 New and Changed Features | 255
Changes in Behavior and Syntax | 273
| 273
Known Behavior | 276
EVPN | 276
Interfaces and Chassis | 276
Layer 2 Features | 277
Multicast | 277
Platform and Infrastructure | 277
Routing Protocols | 280
Storage and Fibre Channel | 281
Virtual Chassis | 281
Services Applications | 281
Known Issues | 282
EVPN | 282
Interfaces and Chassis | 283
Layer 2 Features | 283
MPLS | 283
Platform and Infrastructure | 284
Routing Protocols | 286
Resolved Issues | 287
Resolved Issues: 18.1R3 | 288
Resolved Issues: 18.1R2 | 291
Resolved Issues: 18.1R1 | 294
Documentation Updates | 299
New Simplified Documentation Architecture | 299
9
Migration, Upgrade, and Downgrade Instructions | 300
Upgrading Software on QFX Series Switches | 301
Installing the Software on QFX10002-60C Switches | 303
Installing the Software on QFX10002 Switches | 303
Upgrading Software from Junos OS Release 15.1X53-D3X to Junos OS Release
15.1X53-D60, 15.1X53-D61.7, 15.1X53-D62, and 15.1X53-D63 on QFX10008 and
QFX10016 Switches | 304
Installing the Software on QFX10008 and QFX10016 Switches | 306
Performing a Unified ISSU | 310
Preparing the Switch for Software Installation | 311
Upgrading the Software Using Unified ISSU | 311
Upgrade and Downgrade Support Policy for Junos OS Releases | 313
Product Compatibility | 314
Hardware Compatibility | 314
Junos OS Release Notes for SRX Series | 315
New and Changed Features | 316
Release 18.1R3 New and Changed Features | 316
Release 18.1R2 New and Changed Features | 316
Release 18.1R1 New and Changed Features | 317
Changes in Behavior and Syntax | 323
Chassis Cluster | 323
Juniper Sky ATP | 323
VPN | 323
Known Behavior | 324
Chassis Clustering | 324
J-Web | 324
Platform and Infrastructure | 325
Software Installation and Upgrade | 325
User Interface and Configuration | 325
VPNs | 325
Known Issues | 326
Application Layer Gateways (ALGs) | 326
10
Chassis Clustering | 327
Class of Service (CoS) | 327
Flow-based and Packet-based Processing | 327
Interfaces and Routing | 328
Intrusion Detection and Prevention (IDP) | 328
Platform and Infrastructure | 328
Routing Policy and Firewall Filters | 329
Routing Protocols | 329
Software Installation and Upgrade | 329
VPNs | 329
Software Installation and Upgrade | 330
VPNs | 330
Resolved Issues | 330
Resolved Issues: 18.1R3 | 331
Resolved Issues: 18.1R2 | 333
Resolved Issues: 18.1R1 | 335
Documentation Updates | 341
New Simplified Documentation Architecture | 342
Migration, Upgrade, and Downgrade Instructions | 343
Upgrade and DowngradeSupport Policy for Junos OS Releases and Extended End-Of-Life
Releases | 343
Product Compatibility | 344
Hardware Compatibility | 344
Upgrading Using ISSU | 345
Compliance Advisor | 345
Finding More Information | 345
Documentation Feedback | 346
Requesting Technical Support | 347
Self-Help Online Tools and Resources | 347
Creating a Service Request with JTAC | 348
Revision History | 348
11
Introduction
Junos OS runs on the following Juniper Networks®hardware: ACX Series, EX Series, M Series, MX Series,
NFX Series, PTX Series, QFabric systems, QFX Series, SRX Series, T Series, and Junos Fusion.
These release notes accompany Junos OS Release 18.1R3 for the ACX Series, EX Series, MX Series, NFX
Series, PTX Series, QFX Series, SRX Series, and Junos Fusion. They describe new and changed features,
limitations, and known and resolved problems in the hardware and software.
Junos OS Release Notes for ACX Series
IN THIS SECTION
12
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Known Issues | 15
Resolved Issues | 16
Documentation Updates | 18
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
These release notes accompany Junos OS Release 18.1R3 for the ACX Series. They describe new and
changed features, limitations, and known and resolved problems in the hardware and software.
You can also find these release notes on the Juniper Networks Junos OS Documentation webpage, located
at https://www.juniper.net/documentation/product/en_US/junos-os.
New and Changed Features
IN THIS SECTION
Release 18.1R3 New and Changed Features | 13
Release 18.1R2 New and Changed Features | 13
Release 18.1R1 New and Changed Features | 13
This section describes the features and enhancements in Junos OS Release 18.1R3 for ACX Series routers.
Release 18.1R3 New and Changed Features
There are no new features or enhancements to existing features for ACX Series Universal Metro Routers
in Junos OS Release 18.1R3.
13
Release 18.1R2 New and Changed Features
There are no new features or enhancements to existing features for ACX Series Universal Metro Routers
in Junos OS Release 18.1R2.
Release 18.1R1 New and Changed Features
Management
Support for NETCONF over SSH and custom YANG models (ACX Series)—Starting in Junos OS Release
•
18.1R1, ACX Series routers support NETCONF OVER SSH and custom YANG models.
Client applications can access the NETCONF server using the SSH protocol and use the standard SSH
authentication mechanism. After authentication, the NETCONF server uses the configured Junos OS
login usernames and classes to determine whether a client application is authorized to make each request.
You can load custom YANG models on the router to add data models that are not natively supported
by Junos OS but can be supported by translation. Doing this enables you to extend the configuration
hierarchies and operational commands with data models that are customized for your operations. You
can load custom YANG modules by using the request system yang add operational command.
[See Understanding the Management of Nonnative YANG Modules on Devices Running Junos OS.]
SEE ALSO
Changes in Behavior and Syntax | 14
Known Behavior | 15
Documentation Updates | 18
Known Issues | 15
Resolved Issues | 16
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Changes in Behavior and Syntax
IN THIS SECTION
Interfaces and Chassis | 14
14
This section lists the changes in behavior of Junos OS features and changes in the syntax of Junos OS
statements and commands from Junos OS Release 18.1R3 for the ACX Series routers.
Interfaces and Chassis
Modified output of show-ptp-clock command (QFX Series switches)—Starting in Junos OS Release
•
18.1R1, the output of the show-ptp-clock command is modified to display the value of the GMC Class
field as 248 for a PTP boundary clock when the lock state of the clock is Acquiring.
SEE ALSO
New and Changed Features | 13
Known Behavior | 15
Documentation Updates | 18
Known Issues | 15
Resolved Issues | 16
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Known Behavior
There are no known limitations in Junos OS Release 18.1R3 for the ACX Series.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks
online Junos Problem Report Search application.
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Documentation Updates | 18
Known Issues | 15
Resolved Issues | 16
15
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Known Issues
There are no known issues in hardware and software in Junos OS Release 18.1R3 for the ACX Series.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks
online Junos Problem Report Search application.
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Documentation Updates | 18
Resolved Issues | 16
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Resolved Issues
IN THIS SECTION
Resolved Issues: 18.1R3 | 16
Resolved Issues: 18.1R2 | 16
Resolved Issues: 18.1R1 | 17
This section lists the issues fixed in the Junos OS main release and the maintenance releases.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks
online Junos Problem Report Search application.
16
Resolved Issues: 18.1R3
There are no resolved issues in Junos OS 18.1R3 Release for ACX Series routers.
Resolved Issues: 18.1R2
There are no resolved issues in Junos OS 18.1R2 Release for ACX Series routers.
Resolved Issues: 18.1R1
Alarms
The major alarm about Fan & PSU Airflow direction mismatch was seen by removing management cable
•
PR1327561
Dynamic Host Configuration Protocol
ACX5000 line of routers did not forward DHCP-RELAY requests with IRB interface after upgrade.
•
PR1243687
Firewall Filters
On ACX Series routers, syslog error was seen on the output/egress firewall filter. PR1316588
•
Installation and Upgrade
fxpc core was observed during ISSU upgrade. PR1318771
•
Layer 2 Features
17
On ACX5000 line of routers, transit ARP packets were being punted to the RE. PR1263012
•
VPN
On ACX5000 line of routers, memory leak was seen during Layer 3 VPN scaling test when committing
•
Layer 3 VPN configuration. PR1115686
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Documentation Updates | 18
Known Issues | 15
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Documentation Updates
IN THIS SECTION
New Simplified Documentation Architecture | 18
This section lists the errata and changes in Junos OS Release 18.1R3 for the ACX Series documentation.
New Simplified Documentation Architecture
With the release of Junos OS Release 18.1, Juniper is simplifying its technical documentation to make
•
it easier for you to find information and know that you can rely on it when you find it. In the past, we
organized documentation about Junos OS software features into platform-specific documents. In many
cases, features are supported on multiple platforms, so you might not easily find the document you want
for your platform.
18
With Junos OS Release 18.1, we have eliminated the platform-specific software feature documents. For
example, if you want to find documentation on OSPF, there is only one document regardless of which
platform you have. Here are some of the benefits of our new simplified architecture:
Over time, you will see better search results when looking for Juniper documentation. You will be able
•
to find what you want faster and be assured that is the right document.
If a software feature is supported on multiple platforms, you can find information about all the platforms
•
in one place.
Because we have eliminated many documents that covered similar topics, you will now find one
•
document with all the information.
You can know that you are always getting the most current and accurate information.
•
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Known Issues | 15
Resolved Issues | 16
Migration, Upgrade, and Downgrade Instructions | 19
Product Compatibility | 20
Migration, Upgrade, and Downgrade Instructions
IN THIS SECTION
Upgrade and Downgrade Support Policy for Junos OS Releases | 19
This section contains the upgrade and downgrade support policy for Junos OS for the ACX Series routers.
Upgrading or downgrading Junos OS might take several minutes, depending on the size and configuration
of the network.
19
For information about software installation and upgrade, see the Installation and Upgrade Guide.
Upgrade and Downgrade Support Policy for Junos OS Releases
Support for upgrades and downgrades that span more than three Junos OS releases at a time is not
provided, except for releases that are designated as Extended End-of-Life (EEOL) releases. EEOL releases
provide direct upgrade and downgrade paths—you can upgrade directly from one EEOL release to the
next EEOL release even though EEOL releases generally occur in increments beyond three releases.
You can upgrade or downgrade to the EEOL release that occurs directly before or after the currently
installed EEOL release, or to two EEOL releases before or after. For example, Junos OS Releases 17.1,
17.2 and 17.3 are EEOL releases. You can upgrade from Junos OS Release 17.1 to Release 17.2 or from
Junos OS Release 17.1 to Release 17.3.
You cannot upgrade directly from a non-EEOL release to a release that is more than three releases ahead
or behind. To upgrade or downgrade from a non-EEOL release to a release more than three releases before
or after, first upgrade to the next EEOL release and then upgrade or downgrade from that EEOL release
to your target release.
For more information about EEOL releases and to review a list of EEOL releases, see
https://www.juniper.net/support/eol/junos.html.
For information about software installation and upgrade, see the Installation and Upgrade Guide.
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Documentation Updates | 18
Known Issues | 15
Resolved Issues | 16
Product Compatibility | 20
Product Compatibility
IN THIS SECTION
20
Hardware Compatibility | 20
Hardware Compatibility
To obtain information about the components that are supported on the devices, and the special compatibility
guidelines with the release, see the Hardware Guide for the product.
To determine the features supported on ACX Series routers in this release, use the Juniper Networks
Feature Explorer, a Web-based application that helps you to explore and compare Junos OS feature
information to find the right software release and hardware platform for your network. Find Feature
Explorer at https://pathfinder.juniper.net/feature-explorer/.
Hardware Compatibility Tool
For a hardware compatibility matrix for optical interfaces and transceivers supported across all platforms,
see the Hardware Compatibility tool.
SEE ALSO
New and Changed Features | 13
Changes in Behavior and Syntax | 14
Known Behavior | 15
Documentation Updates | 18
Known Issues | 15
Resolved Issues | 16
Migration, Upgrade, and Downgrade Instructions | 19
Junos OS Release Notes for EX Series Switches
IN THIS SECTION
New and Changed Features | 21
Changes in Behavior and Syntax | 30
Known Behavior | 35
21
Known Issues | 37
Resolved Issues | 40
Documentation Updates | 48
Migration, Upgrade, and Downgrade Instructions | 49
Product Compatibility | 50
These release notes accompany Junos OS Release 18.1R3 for the EX Series. They describe new and
changed features, limitations, and known and resolved problems in the hardware and software.
You can also find these release notes on the Juniper Networks Junos OS Documentation webpage, located
at https://www.juniper.net/documentation/product/en_US/junos-os.
New and Changed Features
IN THIS SECTION
Release 18.1R3-S3 New and Changed Features | 22
Release 18.1R3 New and Changed Features | 23
Release 18.1R2 New and Changed Features | 23
Release 18.1R1 New and Changed Features | 25
This section describes the new features and enhancements to existing features in the Junos OS main
release and the maintenance releases for EX Series.
NOTE: The following EX Series switches are supported in Release 18.1R3: EX2300, EX3400,
EX4300, EX4600, and EX9200.
NOTE: In Junos OS Release 18.1R3, J-Web is supported on the EX2300, EX3400, EX4300, and
EX4600 switches in both standalone and Virtual Chassis setup.
22
The J-Web distribution model being used provides two packages:
Platform package—Installed as part of Junos OS; provides basic functionalities of J-Web.
•
Application package—Optionally installable package; provides complete functionalities of
•
J-Web.
For details about the J-Web distribution model, see J-Web Application Package Release 18.1A1
for EX2300, EX3400, EX4300, and EX4600 Switches.
Release 18.1R3-S3 New and Changed Features
EVPNs
Support for VMTO for ingress traffic (EX9200)—Starting in Junos OS Release 18.1R3-S3, you can
•
configure the PE device to support virtual machine traffic optimization (VMTO) for ingress traffic. VMTO
eliminates the unnecessary ingress routing to default gateways when a virtual machine is moved from
one data center to another.
To enable VMTO, configure remote-ip-host routes in the [edit routing-instances routing-instance-name
protocols evpn] hierarchy level. You can also filter out the unwanted routes by configuring an import
policy under the remote-ip-host routes option.
[See Configuring EVPN Routing Instances.]
Support for Multihomed Proxy Advertisement (EX9200)—Junos now provides enhanced support to
•
proxy advertise the Mac address and IP route entry from all PEs that are multi-homed to a CE device.
This can prevent traffic loss when one of the links to the PE fails. To support the multihomed proxy
advertisement, all multi-homed PE devices should have the same multihomed proxy advertisement bit
value. The multihomed proxy advertisement feature is enabled by default and Junos uses the default
multihomed proxy advertisement bit value of 0x20.
[See EVPN Multihoming Overview.]
Support for OSPF, IS-IS, BGP, and static routing on IRB interfaces in EVPN-VXLAN networks
•
(EX9200)—Starting in Junos OS Release 18.1R3-S3, you can configure OSPF, IS-IS, BGP, and static
routing with bidirectional forwarding detection (BFD) on an IRB interface that is used as a routed interface
in EVPN. This allows protocol adjacencies to be established between an IRB on a Layer 3 gateway and
a CE device connected directly to a Layer 3 gateway or to a Layer 2 leaf device in an EVPN-VXLAN
network.
[See Supported Protocols on an IRB Interface in EVPN-VXLAN .]
Release 18.1R3 New and Changed Features
23
There are no new features or enhancements to existing features for EX Series switches in Junos OS
•
Release 18.1R3.
Release 18.1R2 New and Changed Features
Hardware
EX2300-24MP and EX2300-48MP switches—Starting with Junos OS Release 18.1R2, two new models
•
of EX2300 switches—EX2300-24MP and EX2300-48MP—are available. EX2300-24MP switch models
have eight 100/1000/2500 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability, 16 10/100/1000
BASE-T Gigabit Ethernet ports with PoE/PoE+ capability, and four built-in 10-Gigabit Ethernet uplink
ports. EX2300-48MP switch models have 16 100/1000/2500 BASE-T Gigabit Ethernet ports with
PoE/PoE+ capability, 32 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability, and
six built-in 10-Gigabit Ethernet uplink ports.
[See EX2300 Switch Hardware Guide.]
Interfaces and Chassis
Support for Multi-Gigabit Ethernet (EX2300)—Starting in Junos OS Release 18.1R2, the Multi-Gigabit
•
Ethernet feature is supported on EX2300-48MP and EX2300-24MP switches. This feature fulfills the
high-speed requirements for a large and mid-size campus, and branch locations for the enterprise
customers.
The mge interface is a rate-selectable (multirate) Gigabit Ethernet interface that can support speeds of
10 Gbps, 5 Gbps, and 2.5 Gbps over CAT5e/CAT6/CAT6a cables. In the EX2300, the mge interface
supports 100 Mbps, 1 Gbps, and 2.5 Gbps speeds, which can be configured by using the speed
configuration statement.
NOTE: Power over Ethernet (PoE) is supported on Multi-Gigabit Ethernet interfaces. PoE
enables EX2300 switches to transfer electrical power through an Ethernet cable. PoE enables
electric power, along with data, to be passed over a copper Ethernet LAN cable.
[See Speed.]
Support for Power over Ethernet (EX2300-24MP and EX2300-48MP)—Starting in Junos OS Release
•
18.1R2, Power over Ethernet (PoE) is supported on EX2300-24MP and EX2300-48MP switch models,
including multigigabit interfaces. (PoE) permits electric power, along with data, to be passed over a
copper Ethernet LAN cable.
EX2300 24MP switches support PoE (IEEE 802.3af) and PoE+ (IEEE 802.at) and can simultaneously
deliver up to 15.4 watts of standards-based 802.3af Class 3 PoE to a maximum of 24 ports or 30 watts
of standards-based 802.3at PoE+ to a maximum of 12 ports, based on a total system budget of 380
watts.
EX2300 48MP switches support PoE (IEEE 802.3af) and PoE+ (IEEE 802.at) and can simultaneously
deliver up to 15.4 watts of standards-based 802.3af Class 3 PoE to a maximum of 48 ports or 30 watts
of standards-based 802.3at PoE+ to a maximum of 24 ports, based on a total system budget of 740
watts.
24
[See Understanding PoE on EX Series Switches.]
Restoration Procedures Failure
Device recovery mode introduced in Junos OS with upgraded FreeBSD (EX Series)—In Junos OS Release
•
18.1R2, for devices running Junos OS with upgraded FreeBSD, provided you have saved a rescue
configuration on the device, there is an automatic device recovery mode that goes into action should
the system go into amnesiac mode.The new process is for the system to automatically retry to boot with
the saved rescue configuration. In this circumstance, the system displays a banner "Device is in recovery
mode” in the CLI (in both the operational and configuration modes). Previously, there was no automatic
process to recover from amnesiac mode. A user with load and commit permission had to log in using
the console and fix the issue in the configuration before the system would reboot.
[See Saving a Rescue Configuration File.]
Virtual Chassis
Virtual Chassis support (EX2300-24MP and EX2300-48MP)—Starting in Junos OS Release 18.1R2,
•
multigigabit EX2300 switches can be interconnected into a Virtual Chassis and operate as one logical
device managed as a single chassis, as follows:
Members can be any combination of up to four EX2300-24MP and EX2300-48MP switches.
•
Multigigabit EX2300 switches cannot be mixed with any other switch models (including any other
•
EX2300 switches) in the same Virtual Chassis.
Any 10-Gbps uplink ports installed with SFP+ transceivers can be configured as Virtual Chassis ports
•
(VCPs) to interconnect the members. Multigigabit EX2300 switches do not have any dedicated or
default-configured VCPs.
To configure a multigigabit EX2300 Virtual Chassis, use similar steps as for configuring other EX Series
and QFX Series Virtual Chassis.
[See Understanding EX2300 Virtual Chassis.]
Release 18.1R1 New and Changed Features
Hardware
EX9251 switches—Starting with Junos OS Release 18.1R1, EX9251 switches are available as a fixed
•
configuration switch. It is an Ethernet-optimized switch that provides carrier-class Ethernet switching.
It has a throughput of up to 400 gigabits per second (Gbps). The switch is available in two variants—with
AC power supply and with DC power supply.
[See EX9251 Switch Hardware Guide.]
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Authentication, Authorization, and Accounting (AAA) (RADIUS)
Access control and authentication (EX2300 and EX3400 switches)—Starting with Junos OS Release
•
18.1R1, EX2300 and EX3400 switches support controlling access to your network using 802.1X
authentication and MAC RADIUS authentication.
802.1X authentication provides port-based network access control (PNAC) as defined in the IEEE
•
802.1X standard. QFX5100 switches support 802.1X features including guest VLAN, private VLAN,
server fail fallback, dynamic changes to a user session, RADIUS accounting, and configuration of
port-filtering attributes on the RADIUS server using VSAs. You configure 802.1X authentication at
the [edit protocols dot1x] hierarchy level.
MAC RADIUS authentication is used to authenticate end devices independently of whether they are
•
enabled for 802.1X authentication. You can permit end devices that are not 802.1X-enabled to access
the LAN by configuring MAC RADIUS authentication on the switch interfaces to which the end devices
are connected. You configure MAC RADIUS authentication at the [edit protocols dot1x authenticator
interface interface-name mac-radius] hierarchy level.
This feature was introduced previously in an “X” release of Junos OS.
[See Understanding Authentication on Switches.]
TACACS+ authorization for operational commands using regular expressions (EX2300, EX3400, EX4300
•
switches and MX Series)—Starting in Junos OS Release 18.1R1, you can configure authorizations for
operational mode commands using regular expressions using the allow-commands-regexps and
deny-commands-regexps statements. Authorizations can also be configured remotely by specifying
Juniper Networks vendor-specific attributes (VSAs) in your TACACS+ authentication server's configuration.
[See Regular Expressions for Allowing and Denying Junos OS Operational Mode Commands, Configuration
Statements, and Hierarchies.]
Class of Service (CoS)
Support for Class of service (EX2300 and EX3400 switches and EX3400 Virtual Chassis)—Starting in
•
Junos OS Release 18.1R1, when a packet traverses a switch, the switch provides the appropriate level
of service to the packet using either default class-of-service(CoS) settings or CoS settings that you
configure. On ingress ports, the switch classifies packets into appropriate forwarding classes and assigns
a loss priority to the packets. On egress ports, the switch applies packet scheduling and any rewrite rules
to re-mark packets.
This feature was previously supported in an “X” release of Junos OS.
[See Junos OS CoS for EX Series Switches Overview.]
High Availability (HA) and Resiliency
High availability features (EX3400 switches and EX3400 Virtual Chassis)—Starting with Junos OS Release
•
18.1R1, high availability features are supported. High availability features refer to the hardware and
software components that provide redundancy and reliability for network communications.
26
The following features are supported:
Graceful Routing Engine switchover (GRES), nonstop active routing and nonstop bridging
•
Virtual Router Redundancy Protocol (VRRP) support
•
VRRP enables you to provide alternative gateways for end hosts that are configured with static default
routes. You can implement VRRP to provide a high availability default path to a gateway without the
need to configure dynamic routing or router discovery protocols on end hosts.
[See High Availability User Guide.]
Layer 2 Features
Layer 2 features (EX3400 switches and EX3400 Virtual Chassis)—Starting with Junos OS Release 18.1R1,
•
the following Layer 2 features are supported:
VLAN support
•
VLANs enable you to divide one physical broadcast domain into multiple virtual domains.
Link Layer Discovery Protocol (LLDP) support
•
LLDP enables a switch to advertise its identity and capabilities on a LAN, as well as receive information
about other network devices.
Q-in-Q tunneling support
•
This feature enables service providers on Ethernet access networks to extend a Layer 2 Ethernet
connection between two customer sites.
Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree Protocol
•
(MSTP), and VLAN Spanning Tree Protocol (VSTP) support
These protocols enable a switch to advertise its identity and capabilities on a LAN and receive
information about other network devices.
This feature was previously supported in an “X” release of Junos OS.
[See Ethernet Switching User Guide.]
Layer 3 Features
Layer 3 feature support (EX2300 and EX3400 Switches)—Starting with Junos OS Release 18.1R1, the
•
Layer 3 features supported in Junos OS Release 15.1X53-D50 are now supported on EX2300 and
EX4300 Switches.
Multicast
27
Layer 2 and Layer 3 multicast support (EX2300 switches and Virtual Chassis, EX3400 switches and
•
Virtual Chassis)—Starting in Junos OS Release 18.1R1, the following IPv4 and IPv6 multicast protocols
are supported:
Internet Group Management Protocol (IGMP) v1, v2, and v3
•
IGMP snooping
•
Multicast Listener Discovery (MLD) protocol v1 and v2
•
MLD snooping
•
Multicast Source Discovery Protocol (MSDP)
•
Protocol Independent Multicast (PIM) sparse mode (SM), dense mode (DM), and source-specific
•
multicast (SSM)
These features were previously supported in an “X” release of Junos OS.
[See Multicast Protocols User Guide.]
Network Management and Monitoring
Pseudohardware RPM timestamps (EX4300 switches and EX4300 Virtual Chassis)—Starting in Junos
•
OS Release 18.1R1, you can configure a pseudo-hardware timestamp on the switch for real-time
performance monitoring (RPM). RPM enables you to configure active probes to track and monitor traffic
on the network. To achieve this, RPM exchanges a set of probes with other IP hosts in the network.
These probes are sent from a source node to other destination devices in the network that requires
tracking. To account for latency or jitter in the communication of probe messages, you can enable
timestamping of the probe packets. On the EX4300 switch, RPM timestamping is performed in the
software. The RPM probes at the requester and responder devices are timestamped in the Packet
Forwarding Engine instead of the Junos OS process (rmpod) that runs on the Routing Engine. This
timestamping method is referred to as pseudo-hardware timestamping. You must configure the switch
as both the RPM client (the requester) and the RPM server (the responder) to timestamp the RPM packet.
You configure pseudohardware timestamps at the [edit services rpm] hierarchy level.
[See Understanding Real-Time Performance Monitoring on EX Series Switches.]
Port mirroring support (EX2300, EX2300-C, and EX3400 switches and EX3400 Virtual Chassis)—Starting
•
in Junos OS Release 18.1R1, port mirroring is supported on EX2300, EX2300-C, and EX3400 switches
and EX3400 Virtual Chassis. Port mirroring copies packets entering or exiting a port or entering a VLAN
and sends the copies to a local interface for local monitoring. You can use port mirroring to send traffic
to applications that analyze traffic for purposes such as monitoring compliance, enforcing policies,
detecting intrusions, monitoring and predicting traffic patterns, and correlating events.
This feature was previously supported in an “X” release of Junos OS.
[See Understanding Port Mirroring and Analyzers on EX2300, EX3400, and EX4300 Switches.]
Port Security
IPv4/IPv6 source guard (EX4600 switches)—Starting in Junos OS Release 18.1R1, you can configure
•
the IP source guard access port security feature to mitigate the effects of source IP address spoofing
and source MAC address spoofing. If IP source guard determines that a host connected to an access
interface has sent a packet with an invalid source IP address or source MAC address in the packet header,
it discards the packet. This feature is supported for IPv4 and IPv6 source addresses.
28
[See Understanding IP Source Guard for Port Security on EX Series Switches.]
MACsec license enforcement (EX3400, EX4300, EX4600, EX9200, QFX5100 switches and Junos Fusion
•
Enterprise)—Starting in Junos OS Release 18.1R1, Media Access Control Security (MACsec) requires
the installation of a MACsec feature license. If the MACsec license is not installed, MACsec functionality
cannot be activated. You add the MACsec license using the request system license add command.
[See Understanding Media Access Control Security (MACsec).]
Security
Distributed denial-of-service (DDoS) protection (EX2300 and EX3400 switches, EX2300 and EX3400
•
Virtual Chassis)—Starting in Junos OS Release 18.1R1, you can configure DDoS protection that enables
the switch to continue functioning while under attack. DDoS attacks use multiple sources to flood a
network or switch with protocol control packets. This malicious traffic triggers a large number of
exceptions in the network and tries to exhaust the system resources so that valid users are denied access
to the network or server. DDoS protection identifies and suppresses malicious control packets while
enabling legitimate control traffic to be processed.
[See Distributed Denial-of-Service (DDoS) Protection Overview.]
Support for firewall filters (EX2300 and EX3400 switches, EX2300 and EX3400 Virtual Chassis)—Starting
•
in Junos OS Release 18.1R1, you can define firewall filters on the switch that define whether to accept
or discard packets. You can use firewall filters on interfaces, VLANs, routed VLAN interfaces (RVIs), link
aggregation groups (LAGs), and loopback interfaces.
This feature was previously supported in an “X” release of Junos OS.
[See Firewall Filters for EX Series Switches Overview.]
Port security features (EX2300 and EX3400 switches, EX2300 and EX4300 Virtual Chassis)—Starting
•
in Junos OS Release 18.1R1, the following port security features are supported:
DHCP snooping (Pv4 and IPv6)—Filters and blocks ingress Dynamic Host Configuration Protocol
•
(DHCP) server messages on untrusted ports, and builds and maintains a database of DHCP lease
information, which is called the DHCP snooping database.
Dynamic ARP inspection (DAI)—Prevents Address Resolution Protocol (ARP) spoofing attacks. ARP
•
requests and replies are compared against entries in the DHCP snooping database, and filtering
decisions are made on the basis of the results of those comparisons. You enable DAI on a VLAN.
IPv6 neighbor discovery inspection—Prevents IPv6 address spoofing attacks. Neighbor discovery
•
requests and replies are compared against entries in the DHCPv6 snooping database, and filtering
decisions are made on the basis of the results of those comparisons. You enable neighbor discovery
inspection on a VLAN.
This feature was previously supported in an “X” release of Junos OS.
29
[See Understanding Port Security Features to Protect the Access Ports on Your Device Against the Loss
of Information and Productivity.]
Port mirroring to IP address (EX4600 switches and Virtual Chassis)—Starting with Junos OS Release
•
18.1R1, you can send mirrored packets to an IP address over a Layer 3 network (for example, if there is
no Layer 2 connectivity to the analyzer device).
[See Understanding Port Mirroring.]
User Interface and Configuration
Support for configuring the ephemeral database using the NETCONF and Junos XML protocols (EX2300,
•
EX3400, EX4300, EX4600, and EX9200 switches)—Starting in Junos OS Release 18.1R1, NETCONF
and Junos XML protocol client applications can configure the ephemeral configuration database. The
ephemeral database provides a fast programmatic interface that enables multiple clients to simultaneously
load and commit configuration changes on a device running Junos OS and with significantly greater
throughput than when committing data to the candidate configuration database. Junos OS provides a
default instance and up to eight user-defined instances of the ephemeral configuration database. The
device’s active configuration is a merged view of the committed configuration database and the
configuration data in all instances of the ephemeral configuration database. Ephemeral configuration
data is volatile and is deleted upon rebooting the device.
[See Understanding the Ephemeral Configuration Database.]
Virtual Chassis
Virtual Chassis support (EX2300, EX3400)—Starting in Junos OS Release 18.1R1, EX2300 or EX3400
•
switches can be interconnected into a Virtual Chassis and operate as one logical device managed as a
single chassis, as follows:
EX2300 Virtual Chassis: Up to four EX2300 and EX2300-C member switches, interconnected using
•
any 10-Gbps SFP+ ports configured as Virtual Chassis ports (VCPs)
EX3400 Virtual Chassis: Up to 10 EX3400 member switches, interconnected using the QSFP+ uplink
•
ports (default-configured VCPs) or any SFP+ uplink ports configured as VCPs
To configure an EX2300 or EX3400 Virtual Chassis, use similar steps as for configuring other EX Series
and QFX Series Virtual Chassis.
This feature was previously supported in an “X” release of Junos OS.
[See Virtual Chassis User Guide for Switches.]
SEE ALSO
Changes in Behavior and Syntax | 30
Known Behavior | 35
30
Known Issues | 37
Resolved Issues | 40
Documentation Updates | 48
Migration, Upgrade, and Downgrade Instructions | 49
Product Compatibility | 50
Changes in Behavior and Syntax
IN THIS SECTION
Release 18.1R3-S10 Changes in Behavior and Syntax | 31
Release 18.1R3-S7 Changes in Behavior and Syntax | 31
Release 18.1R3 Changes in Behavior and Syntax | 32
Release 18.1R2 Changes in Behavior and Syntax | 34
Release 18.1R1 Changes in Behavior and Syntax | 34
This section lists the changes in behavior of Junos OS features and changes in the syntax of Junos OS
statements and commands from Junos OS Release 18.1R3 for the EX Series.
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