公开(公告)号：US20250007827A1

公开(公告)日：2025-01-02

申请号：US18400947

申请日：2023-12-29

Applicant: Juniper Networks, Inc.

Inventor： Abilash Menon ,  Robert W. Kebler ,  Jacob Harrison Fitzharris

IPC: H04L45/00 ,  H04L45/02 ,  H04L45/74

Abstract: Techniques are disclosed for sending Protocol Independent Multicast (PIM) messages across a Layer-3 (L3) transport network. In one example, a first network device receives, via an L2 network from a multicast sender device, a multicast packet for a multicast group associated with a multicast service. The first network device generates, based on the multicast packet, a unicast L3 packet comprising a PIM register request configured to register the first network device as a multicast source for the multicast group. A header of the unicast L3 packet specifies a source address comprising a network address translation (NAT) to an address of a virtual loopback interface of a second network device. The virtual loopback interface is associated with a PIM service between the first and second network devices for the multicast service. The first network device forwards the unicast L3 packet across an L3 transport network to the second network device.