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Configuring Aggregated Multiservices Interfaces

 

The aggregated multiservices (AMS) interface configuration in Junos OS enables you to combine services interfaces from multiple PICs to create a bundle of interfaces that can function as a single interface. You identify the PIC that you want to act as the backup.

  1. Create an aggregated multiservices interface and add member interfaces. Starting in Junos OS Release 19.3R2, an MX-SPC3 Next Gen Services AMS interface can have up to 16 member interfaces with a maximum of 8 MX-SPC3 services cards with up to 2 PICs on each card. Starting with Junos OS Release 16.2, an MS-MPC AMS interface can have up to 36 member interfaces. In Junos OS Release 16.1 and earlier, an AMS interface can have a maximum of 24 member interfaces.Note

    The member interface format is mams-a/b/0, where a is the Flexible PIC Concentrator (FPC) slot number and b is the PIC slot number.

    For example on an MS-MPC, which can have up to four PICs:

    For example on an MX-SPC3, which can have up to two PICs:

  2. Configure logical units for the AMS interface.

    For example:

  3. Configure member failure options.

    For example:

  4. Configure the preferred backup.

    For example:

  5. Note

    This step is not applicable to the Next Gen Services MX-SPC3 services card in the MX240, MX480 or MX960 chassis.

    If the AMS interface has more than 24 member interfaces, set the service PIC boot timeout value to 240 or 300 seconds for every services PIC on the MX Series router. We recommend that you use a value of 240.Note

    Starting with Junos OS Release 16.2, an AMS interface can have up to 36 member interfaces. In Junos OS Release 16.1 and earlier, an AMS interface could have a maximum of 24 member interfaces.

    For example:

Release History Table
Release
Description
Starting in Junos OS Release 19.3R2, an MX-SPC3 Next Gen Services AMS interface can have up to 16 member interfaces with a maximum of 8 MX-SPC3 services cards with up to 2 PICs on each card.
Starting with Junos OS Release 16.2, an MS-MPC AMS interface can have up to 36 member interfaces.