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Configuring Member IDs for a Virtual Chassis

After you commit the preprovisioned configuration on the primary router, you must assign the preprovisioned member IDs to both MX Series routers in the Virtual Chassis by using the request virtual-chassis member-id set command. In an MX Series Virtual Chassis, you can optionally include the slots-per-chassis slot-count option to identify the number of chassis slots in the member router. Assigning the member ID and, optionally, slot-count causes the router to reboot in preparation for forming the Virtual Chassis.

Note:

If you issue the request virtual-chassis member-id set command without first installing an MX Virtual Chassis Redundancy Feature Pack license on both member routers, the software displays a warning message that you are operating without a valid Virtual Chassis software license.

For information about the supported member router combinations in an MX Series Virtual Chassis, see Interchassis Redundancy and Virtual Chassis Overview. Platform support depends on the Junos OS release in your installation.

To configure the member ID and, optionally, slot count for each member router in an MX Series Virtual Chassis:

  1. Set the member ID on the router configured as member 0 in one of the following ways:

    • For a Virtual Chassis consisting of a combination of MX240 routers, MX480 routers, and MX960 routers:

      With this Virtual Chassis configuration, the default slot-count (12) is the same for both member routers, so you do not need to configure it.

    • For a Virtual Chassis consisting of an MX2010 router and either an MX960 router or MX2010 router:

      With this Virtual Chassis configuration, the default slot-count (12) is the same for an MX960 router and an MX2010 router, so you do not need to configure it.

    • For a Virtual Chassis consisting of an MX2020 router and either an MX960 router or MX2010 router:

      To ensure that this Virtual Chassis configuration forms properly, you must set the slot-count value of the MX960 router or MX2010 router to 20 to match the slot-count of the MX2020 router. For example:

    • For a Virtual Chassis consisting of two MX2020 routers:

      With this Virtual Chassis configuration, the default slot-count (20) is the same for both MX2020 routers, so you do not need to configure it.

    The router reboots in preparation for forming the Virtual Chassis. After the reboot, all MPCs remain powered off until the Virtual Chassis port connection is configured.

  2. Repeat Step 1 to set the member ID on the router configured as member 1.

    or

    For example:

    The router reboots in preparation for forming the Virtual Chassis. After the reboot, all MPCs remain powered off until the Virtual Chassis port connection is configured.

  3. (Optional) Verify the member ID configuration for member 0.

    For example:

  4. (Optional) Verify the member ID configuration for member 1.

    For example:

    Note:

    At this point in the configuration procedure, all line cards are offline, and the routers are each designated with the Master role because they are not yet interconnected as a fully formed Virtual Chassis. In addition, member 1 remains in Amnesiac state (has no defined configuration) until the Virtual Chassis forms and the configuration is committed.

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