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Hierarchy Level


Disable hierarchical equal-cost multipath (ECMP) groups at system start time. Hierarchical ECMP is enabled by default and provides for two-level route resolution. Disabling hierarchical ECMP effectively increases the number of ECMP groups available for route resolution because hierarchical ECMP allocates separate groups for overlay and underlay routes. Increasing the number of ECMP groups available is potentially useful in a virtual extensible LAN (VXLAN) environment or when MPLS LDP forwarding equivalence classes (FECs) are configured.


Disabling hierarchical ECMP causes the Packet Forwarding Engine to restart.

To reenable hierarchical ECMP, use the following command: delete forwarding-options no-hierarchical-ecmp. Reenabling hierarhical ECMP also causes the Packet Forwarding Engine to restart.

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 15.1X53-D210.