Network, Computer and Programming Resources

Network - Protocol, DDP (Datagram Delivery

Protocol) In an internetwork based on Apple's Apple- Talk network software, DDP is a protocol for delivering packets between nodes on different subnetworks. This protocol is responsible for actually getting data from end to end, from the source to the destination. The packets are actually delivered to sockets, which are addresses associated with particular processes on the node. Thus, a node might receive datagrams intended for Protocol, DHCP (Dynamic Host Configuration Protocol) 807 different programs. While all delivered to the same machine, the datagrams would go to different processes running on that machine. Either of two main forms of the DDP packet are used, depending on whether the datagram is being delivered within a network or is going across a router: n Short DDP is used for datagrams being sent within a network. n Long DDP is used for datagrams traveling between networks.