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show evpn multicast-snooping assisted-replication replicators

Syntax

Description

Displays information about the assisted replication (AR) replicator devices advertised in an EVPN network and the mode in which they operate.

Extended AR mode enables AR to work with AR replicator devices that can’t retain the ingress AR leaf device IP address as the multicast source when replicating and forwarding the traffic into the EVPN core, usually due to restrictions with the overlay tunnel type. QFX series AR devices require this mode to support AR in an EVPN network with a Virtual Extensible LAN (VXLAN) overlay that might have multihomed Ethernet segments.

Output for this command is only available when IGMP snooping is enabled.

Options

instance evpn-instance-name

(Optional) Display information only for the specified EVPN instance.

Note:

You can only enable IGMP snooping for the default-switch EVPN instance on QFX Series switches in an EVPN-VXLAN environment, so you don’t need to use the instance option because this command only displays information for the default-switch instance.

l2-domain-id ID

(Optional) Display information only for the specified Layer 2 domain ID, which can be a VLAN ID, a VXLAN network identifier (VNI), or a service identifier (I-SID) within the range from 1 through 16777214.

Note:

For QFX Series switches in an EVPN-VXLAN environment, you must specify the Layer 2 domain ID as a VNI.

Required Privilege Level

view

Output Fields

Table 1 describes the output fields for the show evpn multicast-snooping assisted-replication replicators command. Output fields are listed in the approximate order in which they appear.

Table 1: show evpn multicast-snooping assisted-replication replicators Output Fields

Field Name

Field Description

Instance

EVPN instance name.

AR Role

AR role of the device where you run this command:

  • AR Leaf

  • AR Replicator

VN Identifier

Lists information about AR replicators available to this VNI.

Operational Mode

AR mode in which this AR device is operating based on conditions in the network for AR that the device detects:

  • Misconfiguration/Ingress Replication—The AR device detected a misconfiguration in which AR won’t operate correctly, such as when an AR replicator and AR leaf share a multihomed Ethernet segment. The AR leaf device will not use AR, and defaults to using regular ingress replication.

  • No replicators/Ingress Replication—The AR leaf device has not learned about any AR replicator devices, and defaults to using regular ingress replication instead of AR.

  • Extended AR—Ingress AR leaf devices should replicate multicast traffic to all other AR leaf devices that are its multihoming peers (have attached access devices in the same multihomed Ethernet segment). This AR replicator device will not duplicate traffic to those multihoming peers.

  • Regular AR—When ingress AR leaf devices send multicast traffic to this AR replicator device, they will not send the traffic to their multihoming peers. This AR replicator device will do the replication and forwarding to the other devices in the EVPN network, including the ingress AR leaf device’s multihoming peers.

Replicator IP

IP address of an available AR replicator (the configured loopback address for AR).

Nexthop Index

Next hops index for the AR replicator in the Replicator IP output field.

Interface

Tunnel interface name for the AR replicator in the Replicator IP output field.

Note:

An AR device will have an AR VXLAN encapsulation next hop and an ingress replication VXLAN encapsulation next hop towards a particular AR replicator. This field displays the AR VXLAN encapsulation next hop towards the AR replicator.

Mode

AR mode advertised by the AR replicator in the Replicator IP output field:

  • Extended AR—Ingress AR leaf devices should replicate multicast traffic to all other AR leaf devices that are its multihoming peers (have attached access devices in the same multihomed Ethernet segment). This AR replicator device will not duplicate traffic to those multihoming peers.

  • Regular AR—When ingress AR leaf devices send multicast traffic to this AR replicator device, they will not send the traffic to their multihoming peers. This AR replicator device will do the replication and forwarding to the other devices in the EVPN network, including the ingress AR leaf device’s multihoming peers.

Sample Output

show evpn multicast-snooping assisted-replication replicators (on AR replicator device)

show evpn multicast-snooping assisted-replication replicators (on AR leaf device)

Release Information

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