DVMRP (Distance Vector Multicast Routing Protocol)

 

DVMRP – What is DVMRP (Distance Vector Multicast Routing Protocol)?

• The distance vector multicast routing protocol is multicast routing protocol that takes the routing decision based upon the source address of the packet.

• This algorithm constructs the routing tree for a network.

• Whenever a router receives a packet, it forwards it to some of its ports based on the source address of packet.

• The rest of the routing tree is made by downstream routers.

• In this way, routing tree is created from destination to source.

• The protocol must achieve the following tasks:

1. It must prevent the formation of loops in the network.

2. It must prevent the formation of duplicate packets.

3. It must ensure that the path traveled by a packet is the shortest from its source to the router.

4. It should provide dynamic membership.

To accomplish this, the DVMR algorithm uses a process based on following decision making strategies: