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Configuring Interchassis Redundancy for 5G Universal Routing Platforms Using a Virtual Chassis

To provide a stateful interchassis redundancy solution for routers, you can configure a Virtual Chassis. A Virtual Chassis interconnects two routers into a logical system that you can manage as a single network element.

Note:

For recommended settings on Virtual Chassis devices, please consult Maximizing Scaling and Performance for MX Series Virtual Chassis on the Juniper Networks Knowledge Base.

To configure a Virtual Chassis for routers:

  1. Prepare your site for the Virtual Chassis configuration.

    See Preparing for a Virtual Chassis Configuration.

  2. Install Junos OS licenses on the routers to be configured as members of the Virtual Chassis.

    See Installing Junos OS Licenses on Virtual Chassis Member Routers.

  3. Define configuration groups for the Virtual Chassis.

    See Creating and Applying Configuration Groups for a Virtual Chassis.

  4. Create the preprovisioned member configuration on the primary router in the Virtual Chassis.

    See Configuring Preprovisioned Member Information for a Virtual Chassis.

  5. Configure a heartbeat connection between the primary router and backup router.

    See Configuring a Virtual Chassis Heartbeat Connection

  6. Configure enhanced IP network services on both member routers.

    See Configuring Enhanced IP Network Services for a Virtual Chassis.

  7. Enable graceful Routing Engine switchover (GRES) and nonstop active routing (NSR) on both member routers.

    See Enabling Graceful Routing Engine Switchover and Nonstop Active Routing for a Virtual Chassis.

  8. Set the preprovisioned member IDs and reboot the routers in Virtual Chassis mode.

    See Configuring Member IDs for a Virtual Chassis.

  9. Create the Virtual Chassis ports to interconnect the member routers, and commit the Virtual Chassis configuration on the primary router.

    See Configuring Virtual Chassis Ports to Interconnect Member Routers or Switches.

  10. (Optional) Starting in Junos OS Release 20.2R1, enable the ephemeral configuration database.

    See Enabling and Configuring Instances of the Ephemeral Configuration Database.

  11. (Optional) Verify the configuration and operation of the Virtual Chassis.

    See the following topics:

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