Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

no-arp-suppression

Syntax

Hierarchy Level

The instance type ’EVPN’ supports under the hierarchy:

The instance type 'virtual-switch' supports under hierarchy:

Description

Disable the suppression of Address Resolution Protocol (ARP) requests from a customer edge (CE) device or Layer 2 VXLAN gateway to a provider edge (PE) device or Layer 3 VXLAN gateway that acts as ARP proxy in an Ethernet VPN-MPLS (EVPN-MPLS) or Ethernet VPN-Virtual Extensible LAN (EVPN-VXLAN) environment.

When disabling ARP suppression, be aware of the following implications;

  • If the PE device or Layer 3 VXLAN gateway does not find the MAC-IP address binding in its database, it cannot forward the ARP request. Instead, the device discards the ARP request, and the packets flood through the Layer 2 domain because the ARP request is considered to be Layer 2 broadcast traffic.

  • Disabling the suppression of ARP packets on a PE device or Layer 3 VXLAN gateway essentially disables the proxy ARP functionality.

Therefore, we recommend that ARP suppression remains enabled.

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 17.2R1 .

Support for logical systems on MX Series routers added in Junos OS Release 17.4R1.