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lacp (Protocols)


Hierarchy Level


On MX and T Series routers, you can specify periodic packet management (PPM) as centralized. By default, the PPM is distributed.

MX Series routers support Link Aggregation Control Protocol (LACP) with fast hellos during unified ISSU. This support is disabled by default. You must enable the fast-hello-issu option on the main router and on the peer routers before starting unified ISSU. Note that the peer router must also be an MX Series router for this functionality to work.


Distributed PPM processing is enabled for all packets that use PPM.


ppm—Specify the type of PPM processing. Possible values: Centralized, distributed, and inline.

fast-hello-issu—Enable LACP with fast hellos during unified ISSU.

The remaining statements are explained separately. See CLI Explorer.

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 9.3.

The ppm centralized option introduced in Junos OS Release 9.4.

The fast-hello-issu option introduced in Junos OS Release 14.1.