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threshold (Multicast Forwarding Cache)


Hierarchy Level


Configure the suppression, reuse, and warning log message thresholds for multicast forwarding cache limits. You can configure the thresholds globally for the multicast forwarding cache or individually for the IPv4 and IPv6 multicast forwarding caches. Configuring the threshold statement globally for the multicast forwarding cache or including the family statement to configure the thresholds for the IPv4 and IPv6 multicast forwarding caches are mutually exclusive.

When general forwarding-cache suppression is active, the multicast forwarding-cache prevents forwarding traffic on the shared RP tree (RPT). At the same time, MVPN (*,G) forwarding states are not created for new RPT c-mcast entires, and , (*,G) installed by BGP-MVPN protocol are deleted. When general forwarding-cache suppression ends, BGP-MVPN (*,G) entries are re-added in the RIB and restored to the FIB (up to the MVPN (*,G) limit).

When MVPN RPT suppression is active, for all PE routers in excess of the threshold (including RP PEs), MVPN will not add new (*,G) forwarding entries to the forwarding-cache. Changes are visible once the entries in the current forwarding-cache have timed out or are deleted.

To use mvpn-rpt-suppress and/or mvpn-rpt-reuse, you must first configure the general suppress threshold. If suppress is configured but mvpn-rpt-suppress is not, both mvpn-rpt-suppress and mvpn-rpt-reuse will inherit and use the value set for the general suppress.


reuse or mvpn-rpt-reusevalue (Optional) Value at which to begin creating new multicast forwarding cache entries. If configured, this number should be less than the suppress value.

  • Range: 1 through 200,000

suppress or mvpn-rpt-suppressvalue —Value at which to begin suppressing new multicast forwarding cache entries. This value is mandatory. This number should be greater than the reuse value.

  • Range: 1 through 200,000

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.