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Junos OS Release Notes for Junos Fusion Provider Edge

 

These release notes accompany Junos OS Release 20.2R1 for fusion for provider edge. 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.

What's New

Learn about new features introduced in this release for provider edge.

Junos Fusion

  • MPC10E and MPC11E interoperability with Junos fusion for provider edge (MX240, MX480, MX960, MX2010, and MX2020)—Starting in Junos OS Release 20.2R1, Junos OS supports using the MPC10E and MPC11E alongside other MPC line cards in the same MX Series router chassis that has been configured with Junos fusion for provider edge. The line cards can coexist in the same router chassis, and the router passes traffic between the devices connected to the MPC10E/MPC11E and the satellite devices that are connected to other MPC line cards through the switch fabric. You cannot use MPC10E/MPC11E in Junos fusion, which means you cannot connect satellite devices to ports on the MPC10E/MPC11E line cards.

    Junos fusion does not support hyper mode. To support Junos fusion in an MX Series router where MPC10E/MPC11E coexists with other MPC line cards, use the set forwarding-options no-hyper-mode statement. In addition, you must also use an FPC slot ID in the range of 160—252 for the satellite device interfaces. To configure the FPC slot ID, use the set chassis satellite-management fpc slot-id statement.

    [See Junos Fusion Provider Edge Overview.]

What's Changed

There are no changes in the behavior of Junos OS features or in the syntax of Junos OS statements and commands in this release for Junos fusion for provider edge.

Known Limitations

There are no known behaviors, system maximums, and limitations in hardware and software in Junos OS Release 20.2R1 for Junos fusion for provider edge.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

Open Issues

There are no known issues in the Junos OS Release 20.2R1 for Junos fusion for provider edge.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

Resolved Issues

This section lists the issues fixed in the Junos OS Release 20.2R1 for Junos fusion for provider edge.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

Fusion for Provider Edge

  • On the EX4300 devices in the Junos fusion scenario, the temperature sensor alarm is observed. PR1466324

Documentation Updates

There are no errata or changes in Junos OS Release 20.2R1 documentation for Junos fusion for provider edge.

Migration, Upgrade, and Downgrade Instructions

This section contains the procedure to upgrade Junos OS, and the upgrade and downgrade policies for Junos OS for Junos fusion for provider edge. Upgrading or downgrading Junos OS might take several hours, depending on the size and configuration of the network.

Basic Procedure for Upgrading an Aggregation Device

When upgrading or downgrading Junos OS, always use the jinstall package. Use other packages (such as the jbundle package) only when so instructed by a Juniper Networks support representative. For information about the contents of the jinstall package and details of the installation process, see the Installation and Upgrade Guide.

Note

Before upgrading, back up the file system and the currently active Junos OS configuration so that you can recover to a known, stable environment in case the upgrade is unsuccessful. Issue the following command:

The installation process rebuilds the file system and completely reinstalls Junos OS. Configuration information from the previous software installation is retained, but the contents of log files might be erased. Stored files on the routing platform, such as configuration templates and shell scripts (the only exceptions are the juniper.conf and ssh files), might be removed. To preserve the stored files, copy them to another system before upgrading or downgrading the routing platform. See the Installation and Upgrade Guide.

The download and installation process for Junos OS Release 20.2R1 is different from that for earlier Junos OS releases.

  1. Using a Web browser, navigate to the Download Software URL on the Juniper Networks webpage:

    https://www.juniper.net/support/downloads/

  2. Log in to the Juniper Networks authentication system by using the username (generally your e-mail address) and password supplied by Juniper Networks representatives.
  3. Select By Technology > Junos Platform > Junos fusion to find the software that you want to download.
  4. Select the release number (the number of the software version that you want to download) from the Version drop-down list to the right of the page.
  5. Select the Software tab.
  6. Select the software package for the release.
  7. Review and accept the End User License Agreement.
  8. Download the software to a local host.
  9. Copy the software to the routing platform or to your internal software distribution site.
  10. Install the new jinstall package on the aggregation device.Note

    We recommend that you upgrade all software packages out-of-band using the console, because in-band connections are lost during the upgrade process.

    Customers in the United States and Canada, use the following commands.

    • For 64-bit software:

      Note

      We recommend that you use 64-bit Junos OS software when implementing Junos fusion for provider edge.

      user@host> request system software add validate reboot source/jinstall64-20.2R1.SPIN-domestic-signed.tgz

    • For 32-bit software:

      user@host> request system software add validate reboot source/jinstall-20.2R1.SPIN-domestic-signed.tgz

    All other customers, use the following commands.

    • For 64-bit software:

      Note

      We recommend that you use 64-bit Junos OS software when implementing Junos fusion for provider edge.

      user@host> request system software add validate reboot source/jinstall64-20.2R1.SPIN-export-signed.tgz

    • For 32-bit software:

      user@host> request system software add validate reboot source/jinstall-20.2R1.SPIN-export-signed.tgz

    Replace source with one of the following values:

    • /pathname—For a software package that is installed from a local directory on the router.

    • For software packages that are downloaded and installed from a remote location:

      • ftp://hostname/pathname

      • http://hostname/pathname

      • scp://hostname/pathname (available only for the Canada and U.S. version)

    The validate option validates the software package against the current configuration as a prerequisite for adding the software package to ensure that the router reboots successfully. This is the default behavior when the software package being added is for a different release.

    Adding the reboot command reboots the router after the upgrade is validated and installed. When the reboot is complete, the router displays the login prompt. The loading process might take 5 to 10 minutes.

    Rebooting occurs only if the upgrade is successful.

Note

After you install a Junos OS Release 20.2R1 jinstall package, you cannot return to the previously installed software by issuing the request system software rollback command. Instead, you must issue the request system software add validate command and specify the jinstall package that corresponds to the previously installed software.

Upgrading an Aggregation Device with Redundant Routing Engines

If the aggregation device has two Routing Engines, perform a Junos OS installation on each Routing Engine separately as follows to minimize disrupting network operations:

  1. Disable graceful Routing Engine switchover (GRES) on the master Routing Engine and save the configuration change to both Routing Engines.

  2. Install the new Junos OS release on the backup Routing Engine while keeping the currently running software version on the master Routing Engine.

  3. After making sure that the new software version is running correctly on the backup Routing Engine, switch over to the backup Routing Engine to activate the new software.

  4. Install the new software on the original master Routing Engine that is now active as the backup Routing Engine.

For the detailed procedure, see the Installation and Upgrade Guide.

Preparing the Switch for Satellite Device Conversion

Satellite devices in a Junos fusion topology use a satellite software package that is different from the standard Junos OS software package. Before you can install the satellite software package on a satellite device, you first need to upgrade the target satellite device to an interim Junos OS software version that can be converted to satellite software. For satellite device hardware and software requirements, see Understanding Junos fusion Software and Hardware Requirements

Note

The following conditions must be met before a standalone switch that is running Junos OS Release 14.1X53-D43 can be converted to a satellite device when the action is initiated from the aggregation device:

  • The switch can be converted to only SNOS 3.1 and later.

  • Either the switch must be set to factory-default configuration by using the request system zeroize command, or the following command must be included in the configuration: set chassis auto-satellite-conversion.

Customers with EX4300 switches, use the following command:

user@host> request system software add validate reboot source/jinstall-ex-4300-14.1X53-D43.3-domestic-signed.tgz

Customers with QFX5100 switches, use the following command:

user@host> request system software add reboot source/jinstall-qfx-5-14.1X53-D43.3-domestic-signed.tgz

When the interim installation has completed and the switch is running a version of Junos and OS on one line that is compatible with satellite device conversion, perform the following steps:

  1. Log in to the device by using the console port.
  2. Clear the device:
    [edit]

    user@satellite-device# request system zeroize
    Note

    The device reboots to complete the procedure for resetting the device.

    If you are not logged in to the device by using the console port connection, your connection to the device is lost after you enter the request system zeroize command.

    If you lose your connection to the device, log in using the console port.

  3. (EX4300 switches only) After the reboot is complete, convert the built-in 40-Gbps QSFP+ interfaces from Virtual Chassis ports (VCPs) into network ports:
    user@satellite-device> request virtual-chassis vc-port delete pic-slot 1 port port-number

    For example, to convert all four built-in 40-Gbps QSFP+ interfaces on an EX4300-24P switch into network ports:

    user@satellite-device> request virtual-chassis vc-port delete pic-slot 1 port 0

    user@satellite-device> request virtual-chassis vc-port delete pic-slot 1 port 1

    user@satellite-device> request virtual-chassis vc-port delete pic-slot 1 port 2

    user@satellite-device> request virtual-chassis vc-port delete pic-slot 1 port 3

    This step is required for the 40-Gbps QSFP+ interfaces that will be used as uplink interfaces in a Junos fusion topology. Built-in 40-Gbps QSFP+ interfaces on EX4300 switches are configured into VCPs by default, and the default settings are restored after the device is reset.

After this initial preparation, you can use one of three methods to convert your switches into satellite devices—autoconversion, manual conversion, and preconfiguration. See Configuring Junos fusion for provider edge for detailed configuration steps for each method.

Converting a Satellite Device to a Standalone Device

If you need to convert a satellite device to a standalone device, you must install a new Junos OS software package on the satellite device and remove the satellite device from the Junos fusion topology.

Note

If the satellite device is a QFX5100 switch, you need to install a PXE version of Junos OS. The PXE version of Junos OS is software that includes pxe in the Junos OS package name when it is downloaded from the Software Center—for example, the PXE image for Junos OS Release 14.1X53-D43 is named install-media-pxe-qfx-5-14.1X53-D43.3-signed.tgz . If the satellite device is an EX4300 switch, you install a standard jinstall-ex-4300 version of Junos OS.

The following steps explain how to download software, remove the satellite device from Junos fusion, and install the Junos OS software image on the satellite device so that the device can operate as a standalone device.

  1. Using a Web browser, navigate to the Junos OS software download URL on the Juniper Networks webpage:

    https://www.juniper.net/support/downloads

  2. Log in to the Juniper Networks authentication system by using the username (generally your e-mail address) and password supplied by Juniper Networks representatives.
  3. Select By Technology > Junos Platform > Junos fusion from the drop-down list and select the switch platform series and model for your satellite device.
  4. Select the Junos OS Release 14.1X53-D30 software image for your platform.
  5. Review and accept the End User License Agreement.
  6. Download the software to a local host.
  7. Copy the software to the routing platform or to your internal software distribution site.
  8. Remove the satellite device from the automatic satellite conversion configuration.

    If automatic satellite conversion is enabled for the satellite device’s member number, remove the member number from the automatic satellite conversion configuration. The satellite device’s member number is the same as the FPC slot ID.

    [edit]
    user@aggregation-device# delete chassis satellite-management auto-satellite-conversion satellite member-number

    For example, to remove member number 101 from Junos fusion:

    [edit]
    user@aggregation-device# delete chassis satellite-management auto-satellite-conversion satellite 101

    You can check the automatic satellite conversion configuration by entering the show command at the [edit chassis satellite-management auto-satellite-conversion] hierarchy level.

  9. Commit the configuration.

    To commit the configuration to both Routing Engines:

    [edit]
    user@aggregation-device# commit synchronize

    Otherwise, commit the configuration to a single Routing Engine:

    [edit]
    user@aggregation-device# commit
  10. Install the Junos OS software on the satellite device to convert the device to a standalone device.
    [edit]
    user@aggregation-device> request chassis satellite install URL-to-software-package fpc-slot member-number

    For example, to install a PXE software package stored in the /var/tmp directory on the aggregation device onto a QFX5100 switch acting as the satellite device using FPC slot 101:

    [edit]
    user@aggregation-device> request chassis satellite install /var/tmp/install-media-pxe-qfx-5-14.1X53-D43.3-signed.tgz fpc-slot 101

    For example, to install a software package stored in the var/tmp directory on the aggregation device onto an EX4300 switch acting as the satellite device using FPC slot 101:

    [edit]
    user@aggregation-device> request chassis satellite install /var/tmp/jinstall-ex-4300-14.1X53-D30.3-domestic-signed.tgz fpc-slot 101

    The satellite device stops participating in the Junos fusion topology after the software installation starts. The software upgrade starts after this command is entered.

  11. Wait for the reboot that accompanies the software installation to complete.
  12. When you are prompted to log back into your device, uncable the device from the Junos fusion topology. See Removing a Transceiver from a QFX Series Device or Remove a Transceiver, as needed. Your device has been removed from Junos fusion. Note

    The device uses a factory-default configuration after the Junos OS installation is complete.

Upgrading an Aggregation Device

When you upgrade an aggregation device to Junos OS Release 20.2R1, you must also upgrade your satellite device to Satellite Device Software version 3.1R1.

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 19.3, 19.4, and 20.1 are EEOL releases. You can upgrade from Junos OS Release 19.3 to Release 19.4 or from Junos OS Release 19.3 to Release 20.1.

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.

Downgrading from Junos OS Release 20.1

To downgrade from Release 20.1 to another supported release, follow the procedure for upgrading, but replace the 20.1 jinstall package with one that corresponds to the appropriate release.

Note

You cannot downgrade more than three releases.

For more information, see the Installation and Upgrade Guide.