replicator

Syntax

Hierarchy Level

Description

Configure a device in an EVPN network into the assisted replication (AR) replicator role.

AR helps to optimize broadcast, unknown unicast, and multicast (BUM) traffic in EVPN networks. To enable AR, you configure devices in the EVPN network to operate as AR replicator and AR leaf devices.

AR replicator devices take on BUM traffic replication and forwarding tasks for AR leaf devices. When an AR leaf device receives BUM traffic, instead of always performing ingress replication itself to the EVPN core, it forwards the traffic on an AR tunnel to an AR replicator device that can better handle the replication load. The AR replicator device then replicates and forwards the traffic to other overlay tunnels. You configure a loopback interface IP address on each AR replicator device for the AR tunnel.

You can configure multiple AR replicator devices in an EVPN network, and AR leaf devices load-balance among the available AR replicator devices.

Options

inet ip-address

(Required) IPv4 address for the AR tunnel to the AR replicator.

This must be a loopback interface configured on the AR replicator device that is part of the EVPN instance.

vxlan-encapsulation-source-ip

(Mandatory for EVPN-VXLAN networks with QFX Series AR devices) Specify the type of VXLAN encapsulation source IP address to include in replicated and forwarded traffic.

Values:
- ingress-replication-ip—(Mandatory for EVPN-VXLAN networks with QFX Series AR devices) Use the ingress replication IP address.
  
  Note:
  When configuring AR in EVPN-VXLAN networks with QFX Series devices as AR replicators and AR leaf devices, the vxlan-encapsulation-source-ip statement must be set to ingress-replication-ip.
  
  The ingress-replication-ip option supports AR on AR replicator devices that are not capable of retaining the source IP address of the originating AR leaf device (sent on the AR overlay tunnel) when replicating the traffic onto other overlay tunnels. In that case, AR must operate in extended AR mode (see Extended AR Mode for Multihomed Ethernet Segments).You must explicitly set this option to override the default factory configuration setting, retain-incoming-source-ip, which is not supported in this case.
  
  AR is currently only supported in EVPN-VXLAN network with QFX Series AR devices operating in extended AR mode.
(Not currently used) The following vxlan-encapsulation-source-ip options are reserved for future AR compatibility among AR replicators with different capabilities:
- assisted-replicator-ip—Use the AR replicator IP address.
- retain-incoming-source-ip—(Default) Retain the VXLAN encapsulation source IP address of the incoming packet.

The remaining statements are explained separately. See CLI Explorer.

Required Privilege Level

routing

Release Information

Statement introduced in Junos OS Release 18.4R2 and 19.4R1.

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