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Topic: Datagram Delivery Protocol

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	User Datagram Protocol - Wikipedia, the free encyclopedia
		UDP is a minimal message-orientated transport layer protocol that is currently documented in IETF RFC 768.
		If an application requires a high degree of reliability, a protocol such as the Transmission Control Protocol or erasure codes may be used instead.
		The Datagram Congestion Control Protocol (DCCP) is being designed as a partial solution to this potential problem by adding end host congestion control behavior to high-rate UDP streams such as streaming media.
	en.wikipedia.org /wiki/User_Datagram_Protocol (1116 words)

	AppleTalk Echo Protocol - Wikipedia, the free encyclopedia
		AEP (AppleTalk Echo Protocol) is a transport layer protocol in the AppleTalk protocol suite designed to test the reachability of network nodes.
		AEP generates packets to be sent to the network node and is identified in the Type field of a packet as an AEP packet.
		After it is identified as an AEP packet, it is forwarded to the node where the packet is examined by the DDP at the destination.
	en.wikipedia.org /wiki/AppleTalk_Echo_Protocol (199 words)

	ip(7P)
		IP is the internetwork datagram delivery protocol that is central to the Internet protocol family.
		Otherwise, that protocol number will be set in outgoing datagrams and used to filter incoming datagrams and an IP header will be generated and prepended to each outgo- ing datagram.
		If the datagram is addressed to the local host but is destined for a protocol that is not supported or a port that is not in use, a desti- nation unreachable message will also be sent.
	www.cs.usyd.edu.au /cgi-bin/man.cgi?section=7P&topic=ip (1445 words)

	Manual page for ip(7P)
		Otherwise, that protocol number will be set in outgoing datagrams and used to filter incoming datagrams and an IP header will be generated and prepended to each outgoing datagram.
		If the datagram is addressed to the local host but is destined for a protocol that is not supported or a port that is not in use, a destination unreachable message will also be sent.
		Datagrams are fragmented on output if the datagram is larger than the maximum transmission unit (MTU) of the network interface.
	www.cs.utk.edu /~cs460.is&r/cgi-bin/group4/collection/ip.7p.html (1249 words)

	Apple Talk
		DDP maintains the cable range of the local network and the network address of a router attached to the local network in every AppleTalk node.
		When DDP receives data from an upper-layer protocol, it determines whether the source and destination nodes are on the same network by examining the network number of the destination address.
		DDP addresses the packet appropriately, indicating in the Type field that the packet is an AEP request.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/applet.htm#xtocid1 (6059 words)

	Apple Talk Protocol suite
		Specifically, it is used to map between AppleTalk node addresses used by the Datagram Delivery Protocol (DDP), as well as higher-level AppleTalk protocols, and the addresses of the underlying data link that is providing AppleTalk connectivity.
		Following the header are the hardware and protocol addresses according to the values of the function field.
		Short format DDP headers carry only the source and destination service socket numbers, while long format DDP headers also carry the source and destination network and node addresses needed for routing capability.
	www.protocols.com /pbook/appletalk.htm (2143 words)

	Novell Documentation: ZENworks for Servers 2 - AppleTalk Protocol Suite
		A datagram delivery protocol that uses an extended header.
		This AppleTalk protocol establishes and maintains the routing information that is required by internetwork routers to route datagrams from any source socket to any destination socket in the internetwork.
		This protocol is an application-layer protocol that e-mail clients and servers use to exchange e-mail messages with each other.
	www.novell.com /documentation/zfs2/zfsadmin/data/a6shjaf.html (869 words)

	NetBios NetBEUI NBF Networking UDP
		It is important to note that the NetBIOS User Datagram Protocol differs from datagram protocols in other protocol suites; the NetBIOS User Datagram Protocol is designed specifically to provide a datagram delivery service and not necessarily to provide a foundation for higher level protocols.
		Where as in other protocol suites the datagram protocol supports transport and session layer protocols running over the datagram protocol, here there is a separate Session Management Protocol which does not make use of the NetBIOS User Datagram Protocol.
		The original User Datagram Protocol is described in Appendix: NetBIOS protocols in IBM PC Network in the section Datagram Packet in IBM PC Network.
	ourworld.compuserve.com /homepages/TimothyDEvans/udp.htm (405 words)

	ip6 - Internet Protocol Version
		The IPv6 protocol is the next generation of the internetwork datagram delivery protocol of the Internet protocol family.
		The protocol options and IPv6 extension headers defined in the IPv6 specification may be set in outgoing datagrams.
		Datagrams flow through the IPv6 layer in two directions:from the network up to user processes and from userprocesses down to the network.
	www.fh-augsburg.de /cgi-bin/man2html?ip6[7P] (1939 words)

	CoreBuilder 9000 Implementation Guide
		AppleTalk extends the normal node-to-node delivery of packets to a process-to-process delivery.
		DDP provides a best-effort, socket-to-socket delivery of datagrams - packets exchanged using DDP - over the AppleTalk network.
		Datagram delivery is the key service on which other AppleTalk services are built.
	support.3com.com /infodeli/tools/switches/cb9000/product/10012688/9i3app11.htm (982 words)

	Switch 4007 Implementation Guide
		Datagram delivery is the basis for building other AppleTalk services, such as electronic mail.
		This protocol determines whether a node is accessible before any sessions are started, and it enables users to estimate the round-trip delay time between nodes.
		All nonroutable protocols, or protocols not yet configured for routing, are dropped.
	support.3com.com /infodeli/tools/switches/4000/4007/13673/9i3apple.htm (6213 words)

	The Appletalk Protocol - Final Project CS337 - Chris Ashworth
		This document is intended to provide an introduction to the AppleTalk protocol stack, with specific focus on describing its characteristics as a set of protocols and comparing it to other networking models such as the OSI reference model and the TCP/IP reference model.
		The main function of the LAP Manager is to act as a switching mechanism that connects the AppleTalk link-access protocol for the link type that the user selects to both the higher-level AppleTalk protocols and the lower-level hardware device driver for that data link.
		Datagram Delivery Protocol (DDP) - "The Datagram Delivery Protocol (DDP) is a connectionless protocol that transfers data between sockets as discrete packets, or datagrams, with each packet carrying its destination internet socket address.
	www.chrisashworth.org /classes/cs337 (1514 words)

	UNIX man pages : ip ()
		SunOS 5.9 Last change: 7 Feb 2002 3 Protocols ip(7P) The IP layer will normally act as a router when the machine has two or more interfaces that are up, forwarding datagrams that are not addressed to it, among other things.
		If the datagram is addressed to the local host but is destined for a protocol that is not supported or a port that is not in use, a destination unreachable message is also sent.
		Fragments of received datagrams are dropped from SunOS 5.9 Last change: 7 Feb 2002 4 Protocols ip(7P) the reassembly queues if the complete datagram is not recon- structed within a short time period.
	www.lehman.cuny.edu /cgi-bin/man-cgi?ip (1799 words)

	Lecture 3: Apple Talk
		The Apple Talk protocol suite was introduced in the mid 1980's, which is the same period of time that the industry was focusing on (and debating about) the need for standards.
		DDP - Datagram Delivery Protocol uses RTMP and AEP as tools to devliver data across the network.
		The DDP permits running AppleTalk as a process-to-process, best-effort delivery system, in which the processes running in the nodes of an interconnected network can exchange packets with each other.
	www.vermontel.net /~rickeary/_cnasite/CNA_L03_Appletalk.htm (612 words)

	UNIX man pages : ip6 ()
		Note: checksums are required for all IPv6 datagrams; this is different from IP, in which datagram checksums were optional.
		This option forces datagrams being sent to bypass routing and forwarding by forcing the IPv6 hoplimit field to 1, meaning that the packet will not be forwarded by routers.
		IPv6 extension headers in received datagrams are processed in the IPv6 layer according to the protocol specification.
	www.csee.usf.edu /cgi-bin/man-cgi?ip6 (1877 words)

	[No title] (Site not responding. Last check: 2007-10-13)
		If the datagram is directed to a LocalTalk\(Tm interface on the same network, the DDP* protocol module will send it with a short DDP header.
		The.I length field is the DDP packet length and hop count field.
		When datagrams are writen, a checksum is computed only if this field is nonzero.
	web.mit.edu /darwin/src/modules/AppleTalk/ddp.3 (423 words)

	RFC 1243 (Site not responding. Last check: 2007-10-13)
		AppleTalk is a protocol suite which features an open peer-to-peer architecture that runs over a variety of transmission media.
		The AppleTalk Address Resolution Protocol (AARP) is used to map between AppleTalk node addresses, used by the Datagram Delivery Protocol, and the addresses of the underlying data link layer.
		The Zone Information Protocol (ZIP) is used to maintain a mapping between networks and zone names to facilitate the name lookup process performed by the Name Binding Protocol.
	library.n0i.net /rfc/html/rfc1243.html (2743 words)

	DDP, Datagram Delivery Protocol (Site not responding. Last check: 2007-10-13)
		The Datagram Delivery Protocol (DDP) is the network-layer protocol that is responsible for the socket-to-socket delivery of datagrams over the AppleTalk Internet.
		This group manages the DDP layer on the managed device.
		The DDP group contains statistical counters for the DDP protocol, and a table describing the DDP sockets that have protocol handlers registered.
	filibusta.crema.unimi.it /docs/rfc/ddp.htm (54 words)

	NCeXchange
		The Spanning Tree Protocol, which is also referred to as STP, is defined in the IEEE Standard 802.1D.
		Transmission Control Protocol (TCP) is a connection-oriented, reliable delivery byte-stream transport layer communication protocol, currently documented in IETF RFC 793 [1] (http://www.ietf.org/rfc/rfc793.txt).
		ASP was an intermediate protocol, built on top of ATP, which in turn was the foundation of AFP.
	www.ncexchange.org /99_Articles_User_Datagram_Protocol_(UDP).html (425 words)

	VINO 0.50 Manual - man2-4/atalk.2-4.txt (Site not responding. Last check: 2007-10-13)
		Sockets in the AppleTalk protocol family use the following address struc- ture: struct sockaddr_at { u_int8_t sat_len; u_int8_t sat_family; u_int8_t sat_port; struct at_addr sat_addr; union { struct netrange r_netrange; char r_zero[8]; } sat_range; }; The port of a socket may be set with bind(2).
		PROTOCOLS The AppleTalk protocol family is comprised of the DDP datagram delivery protocol, AppleTalk Data Stream Protocol (ADSP), AppleTalk Echo Protocol (AEP), AppleTalk Filing Protocol (AFP), AppleTalk Session Protocol (ASP), AppleTalk Transaction Protocol (ATP), Name Binding Protocol (NBP), Print- er Access Protocol (PAP), and Zone Information Protocol (ZIP).
		DDP is implemented in the kernel as SOCK_DGRAM sockets in the AF_APPLETALK address family.
	www.eecs.harvard.edu /vino/vino/release-0.50/man/man2-4/atalk.2-4.html (352 words)

	Articles - User Datagram Protocol (Site not responding. Last check: 2007-10-13)
		Ports 49,152 through 65,535 are ephemeral ports and are used as temporary ports primarly by clients when communicating to servers.
		UDP is a minimal message-oriented transport layer protocol that is currently documented in IETF RFC 768.
		In the Internet protocol suite, UDP provides a very simple interface between a network layer below (e.g., IPv4) and an session layer or application layer above.
	www.pointgathering.com /articles/User_Datagram_Protocol (567 words)

	./_Man_SunOS_4.1.3_html/html4/tcp.4p.html
		TCP is the virtual circuit protocol of the Internet protocol family.
		Although other protocols, such as the User Datagram Protocol (UDP), may use the same host and port address format, the port space of these protocols is distinct.
		If the local TCP receives no acknowledgements from its peer for a period of time, as would be the case if the remote machine crashed, the connection is closed and an error is returned to the user.
	www.cs.rit.edu /~hpb/Man/_Man_SunOS_4.1.3_html/html4/tcp.4p.html (886 words)

	Analyze AppleTalk
		IP, IPX, and AppleTalk DDP (Datagram Delivery Protocol) provide similar functionality such as network addressing for end-to-end packet delivery across routers and datagram services for higher layers of protocol.
		The datagram portion of the FwdReq packet is identical to the datagram portion of the BrRq packet.
		Once again, the datagram portion of the packet is identical to the datagram portion of the FwdReq packet and therefore that of the original BrRq packet.
	www.pmg.com /otw_nwsl/96_sm_apple.htm (1774 words)

	Protocols and Protocol Layers (Site not responding. Last check: 2007-10-13)
		In TCP/IP, for instance, TCP is a Transport layer protocol and IP is a Network layer protocol.
		IPX/SPX is another protocol suite known by its Transport and Network layer protocols, but the order of the protocols is backward from the way the protocols are listed in TCP/IP.
		ATP and NBP are AppleTalk Transport layer protocols.
	www.measureup.com /testobjects/MS_NetEss/5a7b7b9.htm (287 words)

	List of IPv4 protocol numbers - Wikipedia, the free encyclopedia
		This is a list of IP protocol numbers that defines the number used in the protocol field of IPv4 packets.
		Interior Gateway Protocol (any private interior gateway (used by Cisco for their IGRP))
		Private IP Encapsulation within IP Stream Control Transmission Protocol
	en.wikipedia.org /wiki/List_of_IP_protocol_numbers (106 words)

	Appletalk White Paper
		When a router receives a DDP packet, it checks to see if the packet's destination network number is the local network.
		To forward a DDP packet to a directly connected node over a given medium, a router must know the hardware-specific address that corresponds to the destination node s 24-bit AppleTalk address.
		In addition to supporting AARP and RTMP, AppleTalk routers must support the Zone Information Protocol (ZIP), which is used to map network numbers to zone names on the network, and the Name Binding Protocol (NBP), which is used to bind names of network visible entities (e.g., printers or file servers) to AppleTalk addresses.
	www.corecom.com /html/appletalk.html (1461 words)

	Troubleshooting AppleTalk
		AppleTalk's primary network-layer protocol is the Datagram Delivery Protocol (DDP).
		ADSP is a reliable protocol in that it guarantees that data bytes are delivered in the same order as sent and that they are not duplicated.
		AppleTalk's Printer Access Protocol (PAP) is a connection-oriented protocol that establishes and maintains connections between clients and servers.
	www.cisco.com /univercd/cc/td/doc/cisintwk/itg_v1/tr1909.htm (12276 words)

	RFC 1742 (Site not responding. Last check: 2007-10-13)
		The DDP group has been split into two groups; one includes variables that any AppleTalk node would implement and the other includes variables only a router would implement.
		The Name Binding Protocol (NBP) is a transport-level protocol that is used to convert human readable service names into the numeric AppleTalk network addresses needed for communicating across the AppleTalk network.
		The AppleTalk Session Protocol (ASP) is a session-level protocol that enables sequences of communications to occur.
	library.n0i.net /rfc/html/rfc1742.html (8580 words)

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