Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?





Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.


Configure traffic forwarding options. For more information about each option, click a linked statement in the Syntax section.


access-securityConfigure IPv6 access security options.
accountingSpecify the discard accounting instance name and options.
dhcp-relayConfigure extended Dynamic Host Configuration Protocol (DHCP) relay and DHCPv6 relay options on the router or switch to enable the router (or switch) to function as a DHCP relay agent.
enhanced-hash-key(MX Series routers with MPCs, T4000 routers with Type 5 FPCs, and EX9200 switches) Select data used in the hash key for enhanced IP forwarding engines.
familySpecify address family for filters.
fast-reroute-prioritySpecify the fast reroute priority for a VPLS routing instance. You can configure high, medium, or low fast reroute priority to prioritize specific VPLS routing instances for faster convergence and traffic restoration.
helpersEnable TFTP or DNS request packet forwarding, or configure the router, switch, or interface to act as a DHCP/BOOTP relay agent. Enable forwarding LAN broadcast traffic on custom UDP ports to particular servers as unicast traffic.
ip-options-protocol-queueConfigure logical queue-depth in the PFE for ip-options packets for a given protocol such as TCP, UDP, ICMP, and so on, except IGMP.
link-layer-broadcast-inet-checkEnable destination MAC and IP address check to prevent the router from forwarding IPv4 packets that have link layer destination address set to broadcast or multicast, unless directed to an IPv4 multicast address.
load-balanceEnable per-prefix or per-flow load balancing so that the router or switch elects a next hop independently of the route selected by other routers or switches.
load-balance-label-capabilityEnable the router to push and pop the load balancing label and causes LDP and RSVP to advertise the entropy label TLV to neighboring routers.
multicast-replicationConfigure the mode of multicast replication that helps to optimize multicast latency.
next-hop-groupSpecify the next-hop address for sending copies of packets to an analyzer.
no-load-balance-label-capabilityDisable advertisement of entropy label capability in LDP and RSVP.
port-mirroringSpecify the input, output, and traceoptions properties for sending copies of packets to an analyzer.
rpf-loose-mode-discardConfigure unicast reverse path forwarding (unicast RPF) loose mode with the ability to discard packets with the source address pointing to the discard next hop.
samplingConfigure traffic sampling.
storm-control-profilesConfigure a storm control profile on a switch or router. Storm control is used to prevent network outages that are caused by broadcast traffic storms.

Required Privilege Level

interface—To view this statement in the configuration.

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