MSDP

MSDP (Multicast Source Discovery Protocol) is an inter-domain multicast protocol that enables the sharing of active multicast source information between Protocol Independent Multicast Sparse Mode (PIM-SM) domains with different Rendezvous Points (RPs). It allows multicast sources in one autonomous system to be discovered by receivers in other autonomous systems by creating peering relationships between MSDP speakers that exchange Source-Active (SA) messages containing multicast source and group information. MSDP is essential for building scalable inter-domain multicast networks, enabling global multicast connectivity while maintaining autonomous control of multicast routing within each domain.

Diagram

Classes

configuration (iosxe.devices)

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

msdp (iosxe.devices.configuration)

Name	Type	Constraint	Mandatory
originator_id	String		No
passwords	List	`[passwords]`	No
peers	List	`[peers]`	No
vrfs	List	`[vrfs]`	No

passwords (iosxe.devices.configuration.msdp)

Name	Type	Constraint	Mandatory
host	String		Yes
encryption	Integer	min: `0`, max: `7`	No
password	String		Yes

peers (iosxe.devices.configuration.msdp)

Name	Type	Constraint	Mandatory
host	String		Yes
remote_as	Integer	min: `1`, max: `65535`	No
connect_source_interface_type	Choice	`Loopback`	No
connect_source_interface_id	String		No

vrfs (iosxe.devices.configuration.msdp)

Name	Type	Constraint	Mandatory
vrf	String		Yes
originator_id	String		No
passwords	List	`[passwords]`	No
peers	List	`[peers]`	No

Examples

iosxe:
  devices:
    - name: Device1
      configuration:
        msdp:
          originator_id: 192.168.1.1
          passwords:
            - host: 10.10.10.10
              encryption: 0
              password: Cisco123
            - host: 10.20.20.20
              encryption: 7
              password: encryptedPassword456
          peers:
            - host: 10.10.1.1
              remote_as: 25000
              connect_source_interface_type: Loopback
              connect_source_interface_id: "0"
            - host: 10.30.30.30
              remote_as: 30000
          vrfs:
            - vrf: VRF-MULTICAST
              originator_id: 172.16.1.1
              passwords:
                - host: 172.16.10.10
                  encryption: 0
                  password: VrfPassword123
              peers:
                - host: 172.16.20.20
                  remote_as: 40000
                  connect_source_interface_type: Loopback
                  connect_source_interface_id: "1"