PIM over GRE Application

Service Overview

PIM over GRE is used to transmit multicast data traffic over GRE tunnels.

Network Description

As shown in Figure 1, the vehicle-mounted control system uses GRE keepalive messages to check network connectivity. A GRE tunnel to the vehicle-mounted control system must be configured on DeviceA. Multicast services are transmitted between DeviceA and the vehicle-mounted control system. Therefore, PIM-SM needs to be enabled on the GRE tunnel interface of DeviceA.

Figure 1 Vehicle-mounted control system

Feature Deployment

A GRE tunnel is configured between DeviceA and the vehicle-mounted control system.

PIM-SM is configured on DeviceA, and PIM-SM is enabled on the GRE tunnel interface.

The multicast data flow received by DeviceA from the source is forwarded to the vehicle-mounted control system through the GRE tunnel.