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Hierarchy Level

Release Information

Statement introduced in Junos OS Release 9.4.

Statement introduced in Junos OS Releases 15.1X49-D10, 15.1X49-D20, 15.1X49-D30, 15.1X49-D35, 15.1X49-D40, 15.1X49-D45, and 15.1X49-D50 for the SRX Series.


(M120, M320, MX Series, T Series, TX Matrix routers, M7i and M10i routers with Enhanced CFEB [CFEB-E], EX Series switches, and QFX Series only) Disable distributed periodic packet management (PPM) to the Packet Forwarding Engine (on routers), to access ports (on EX3200 and EX4200 switches, and QFX Series), or to line cards (on EX6200 and EX8200 switches).

After you disable PPM, PPM processing continues to run on the Routing Engine.

In Junos OS Release 8.2, PPM was moved from the Routing Engine to the Packet Forwarding Engine, access ports, or line cards. The no-delegate-processing statement disables the default behavior and restores the legacy behavior.


Distributed PPM processing is enabled for all protocols that use PPM such as:

  • Bidirectional Forwarding Detection (BFD)

  • Connectivity Fault Management (CFM)

  • Link Aggregation Control Protocol (LACP)

  • Link Fault Management (LFM)

  • Real-time Performance Monitoring (RPM)

  • Spanning Tree Protocol (STP)

  • Synchronous Ethernet (SYNCE)

  • Virtual Router Redundancy Protocol (VRRP)


The protocols BFD and CFM are supported on SRX300, SRX320, SRX340, SRX345 and SRX1500 devices.

The protocol LACP is supported on SRX5400, SRX 5600, and SRX5800 devices.


no-delegate-processing—Disable PPM to the Packet Forwarding Engine, access ports, or line cards. Distributed PPM is enabled by default.

redistribution-timer— Ensures that link aggregation (and STP) work properly for the periodic packet management (PPM) daemons on the aggregation and satellite devices. A value of 120 is recommended for MXVC-ISSU.

Required Privilege Level

routing—To view this statement in the configuration.

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