PIM Support

PIM Support A FortiGate unit can be configured to support PIM by going to Router > Dynamic > Multicast and enabling multicast routing. You can also enable multicast routing using the config router multicast CLI command. When PIM is enabled, the FortiGate unit allocates memory to manage mapping information. The FortiGate unit communicates with neighboring […]

Multicast IP addresses

Multicast IP addresses Multicast uses the Class D address space. The 224.0.0.0 to 239.255.255.255 IP address range is reserved for multicast groups. The multicast address range applies to multicast groups, not to the originators of multicast packets. The following table lists the reserved multicast address ranges and describes what they are reserved for:   Reserved […]

Dense mode

Dense mode The packet organization used in sparse mode is also used in dense mode. When a multicast source begins to┬ásend IP traffic and dense mode is enabled, the closest PIM router registers the IP traffic from the multicast source (S) and forwards multicast packets to the multicast group address (G). All PIM routers initially […]

Sparse mode

Sparse mode Initially, all candidate BSRs in a PIM domain exchange bootstrap messages to select one BSR to which each RP sends the multicast address or addresses of the multicast group(s) that it can service. The selected BSR chooses one RP per multicast group and makes this information available to all of the PIM routers […]

Multicast forwarding

Multicast forwarding Multicasting (also called IP multicasting) consists of using a single multicast source to send data to many receivers. Multicasting can be used to send data to many receivers simultaneously while conserving bandwidth and reducing network traffic. Multicasting can be used for one-way delivery of media streams to multiple receivers and for one-way data […]