PIM

PIM (Protocol Independent Multicast) manages multicast traffic distribution across NX-OS networks, supporting VRF-aware deployments with configurable rendezvous points, anycast RP for redundancy, and SSM (Source-Specific Multicast) range definitions. It provides per-VRF control over RP address assignments, group ranges, bidirectional mode, and SSM group lists with prefix list and route map filtering for granular multicast policy enforcement. PIM interface-level configuration enables sparse mode, BFD integration, DR priority, passive mode, border designation, and neighbor filtering across loopback, VLAN, Ethernet, and port-channel interfaces.

Diagram

Classes

routing (nxos.devices.configuration)

Name	Type	Constraint	Mandatory	Default Value
pim	Class	`[pim]`	No

loopbacks (nxos.devices.configuration.interfaces)

Name	Type	Constraint	Mandatory	Default Value
pim	Class	`[pim]`	No

vlans (nxos.devices.configuration.interfaces)

Name	Type	Constraint	Mandatory	Default Value
pim	Class	`[pim]`	No

ethernets (nxos.devices.configuration.interfaces)

Name	Type	Constraint	Mandatory	Default Value
pim	Class	`[pim]`	No

port_channels (nxos.devices.configuration.interfaces)

Name	Type	Constraint	Mandatory	Default Value
pim	Class	`[pim]`	No

pim (nxos.devices.configuration.routing)

Name	Type	Constraint	Mandatory
evpn_border_leaf	Boolean	`true`, `false`	No
extranet	Boolean	`true`, `false`	No
bfd	Boolean	`true`, `false`	No
auto_enable	Boolean	`true`, `false`	No
flush_routes	Boolean	`true`, `false`	No
log_neighbor_changes	Boolean	`true`, `false`	No
mtu	Integer	min: `1500`, max: `65536`	No
register_rate_limit	Integer	min: `0`, max: `65535`	No
strict_rfc_compliant	Boolean	`true`, `false`	No
spt_switch_graceful	Boolean	`true`, `false`	No
ssm	Class	`[ssm]`	No
rps	List	`[rps]`	No
anycast_rps	List	`[anycast_rps]`	No
vrfs	List	`[vrfs]`	No

ssm (nxos.devices.configuration.routing.pim)

Name	Type	Constraint	Mandatory
range_1	String		No
range_2	String		No
range_3	String		No
range_4	String		No
prefix_list	String		No
none	Boolean	`true`, `false`	No
route_map	String		No

rps (nxos.devices.configuration.routing.pim)

Name	Type	Constraint	Mandatory
address	IP		Yes
group_list	IP		No
bidir	Boolean	`true`, `false`	No
override	Boolean	`true`, `false`	No

anycast_rps (nxos.devices.configuration.routing.pim)

Name	Type	Constraint	Mandatory	Default Value
address	IP		Yes
set_address	IP		Yes

vrfs (nxos.devices.configuration.routing.pim)

Name	Type	Constraint	Mandatory
vrf	String		Yes
bfd	Boolean	`true`, `false`	No
auto_enable	Boolean	`true`, `false`	No
flush_routes	Boolean	`true`, `false`	No
log_neighbor_changes	Boolean	`true`, `false`	No
mtu	Integer	min: `1500`, max: `65536`	No
register_rate_limit	Integer	min: `0`, max: `65535`	No
strict_rfc_compliant	Boolean	`true`, `false`	No
spt_switch_graceful	Boolean	`true`, `false`	No
ssm	Class	`[ssm]`	No
rps	List	`[rps]`	No
anycast_rps	List	`[anycast_rps]`	No

Examples

Example 1: Basic PIM sparse-mode with static RP for VXLAN fabric

nxos:
  devices:
    - name: LEAF1
      configuration:
        routing:
          pim:
            rps:
              - address: 10.1.101.1
        interfaces:
          loopbacks:
            - id: 0
              pim:
                sparse_mode: true
            - id: 1
              pim:
                sparse_mode: true
          ethernets:
            - id: 1/1
              pim:
                sparse_mode: true
            - id: 1/2
              pim:
                sparse_mode: true

Example 2: Spine with anycast RP set for redundant multicast rendezvous

nxos:
  devices:
    - name: SPINE1
      configuration:
        routing:
          pim:
            rps:
              - address: 10.1.101.1
            anycast_rps:
              - address: 10.1.101.1
                set_address: 10.1.100.1
              - address: 10.1.101.1
                set_address: 10.1.100.2
        interfaces:
          loopbacks:
            - id: 0
              pim:
                sparse_mode: true
            - id: 100
              pim:
                sparse_mode: true
          ethernets:
            - id: 1/1
              pim:
                sparse_mode: true
            - id: 1/2
              pim:
                sparse_mode: true

Example 3: PIM with SSM, BFD, and multicast border configuration

nxos:
  devices:
    - name: BORDER-LEAF1
      configuration:
        routing:
          pim:
            bfd: true
            log_neighbor_changes: true
            rps:
              - address: 10.1.101.1
            ssm:
              range_1: 232.0.0.0/8
            vrfs:
              - vrf: BLUE
                rps:
                  - address: 192.168.1.1
                    group_list: 239.0.0.0/8
        interfaces:
          ethernets:
            - id: 1/1
              pim:
                sparse_mode: true
            - id: 1/10
              pim:
                sparse_mode: true
                border: true
                dr_priority: 200