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show evpn oism spmsi-ad



Display multicast source and group (S,G) information corresponding to Selective P-router Multicast Service Interface (S-PMSI) Auto-Discovery (A-D) routes in an EVPN-VXLAN network running enhanced optimized intersubnet multicast (OISM). Enhanced OISM devices use S-PMSI A-D routes to perform PIM source registration only for multicast sources inside the EVPN-VXLAN network.

See PIM Registration with Enhanced OISM for Internal Sources Based on EVPN Type 10 S-PMSI A-D Routes for details on how OISM leaf devices use these routes.

With enhanced OISM, also called the asymmetric bridge domains design, the PEG devices receive traffic on the OISM supplemental bridge domain (SBD) from both external and internal multicast sources. Because OISM PEG devices should only perform PIM registration to the PIM rendezvous point (RP) for internal sources, the enhanced OISM design must distinguish between internal and external multicast sources. With enhanced OISM, the ingress leaf devices advertise S-PMSI A-D routes for internal multicast sources. The PEG devices then send a PIM register to the PIM RP only for the sources that correspond to received S-PMSI A-D routes.


You can see more details about received EVPN Type 10 S-PMSI A-D route advertisements in the EVPN instance multicast routing table using show route table commands such as the following:



Basic brief output (no extensive option)

Display summary output for all Layer 3 (L3) virtual routing and forwarding (VRF) instances and all EVPN instances.


(Optional) Display more detailed output.

group multicast-group-address

(Optional) Display information for the specified multicast group.

l3-context l3-vrf-name

(Optional) Display information only for the specified Layer 3 virtual routing and forwarding (VRF) routing instance.

Without this option, this command displays information for all Layer 3 VRF routing instances where you enabled OISM.

source multicast-source-address

(Optional) Display information for the specified multicast source address.

Required Privilege Level


Output Fields

Table 1: show evpn oism spmsi-ad Output Fields

Field Name

Field Description


EVPN Instance.

VN Identifier

VXLAN virtual network identifier (VNI), which is the L2 domain identifier.

Group IP (basic) or Group (extensive)

Multicast group address.

Source IP (basic) or Source (extensive)

Multicast source address.

Local (extensive only)

Set to 1 if the device originated an EVPN Type 10 S-PMSI A-D route.

Remote (extensive only)

Set to 1 if the device received an EVPN Type 10 S-PMSI A-D route.

Sample Output

show evpn oism spmsi-ad (Brief output with other options)

show evpn oism spmsi-ad extensive

Release Information

Command introduced in Junos OS Release 23.4R1.