MULTICAST CONTROL PLANE

•  control plan used to
• who sent the traffic & to what groups
• who receiving traffic & for what groups
• how traffic should be forwarded when it received
• control plane built with a combination of
• Host to router communication (IGMP)
• Router to Router communication (PIM & MSDP)

MULTICAST ADDRESSING

• IPv4 multicast uses class D addresses
• 22.0.0.0/4 (224.0.0.0 - 239.255.255.255)
• divided into public multicast & some reserved ranges
• Reserved Ranges are:
• LINK-LOCAL ADDRESSES
• 22.0.0.0/24 (224.0.0.0 - 224.0.0.255
• SOURCE SPECIFIC MULTICAST
• 232.0.0.0 - 232.255.255.255
• ADMINISTRATIVELY SCOPED
• 239.0.0.0 - 239.255.255.255
•