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member-interface (Aggregated Multiservices)


Hierarchy Level


Specify the member interfaces for the aggregated multiservices (AMS) interface. You can configure multiple interfaces by specifying each interface in a separate statement.

Starting with Junos OS Release 16.2, an AMS interface can have up to 32 member interfaces. In Junos OS Release 16.1 and earlier, an AMS interface can have a maximum of 24 member interfaces. If you configure more than 24 member interfaces, you must set the pic-boot-timeout value to 240 or 300 seconds at the [edit interfaces interface-name multiservice-options] hierarchy level for every services PIC interface on the MX Series router.

For high availability service applications like Network Address Translation (NAT) that support many-to-one (N:1) redundancy, you can specify two or more interfaces.

On an MS-MPC, you can configure one-to-one (1:1) redundancy. In a 1:1 (stateful) configuration, a single backup interface provides redundancy for a single active interface. A 1:1 configuration is required for IPsec. 1:1 redundancy is not supported on the MX-SPC3 in this release.


The member interfaces that you specify must be members of aggregated multiservices interfaces (mams-).



Name of the member interface. The member interface format is mams-a/b/0, where a is the FPC slot number and b is the PIC slot number.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 11.4.

Support added in Junos OS Release 19.3R2 for Next Gen Services on MX Series routers MX240, MX480 and MX960 with the MX-SPC3 services card.