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The network layer may be divided into three sublayers:
- Subnetwork access - that considers protocols that deal with the interface to networks, such as X.25;
- Subnetwork-dependent convergence - when it is necessary to bring the level of a transit network up to the level of networks on either side
- Subnetwork-independent convergence - handles transfer across multiple networks.
An example of this latter case is CLNP, or IPv6 ISO 8473. It manages the connectionless transfer of data one hop at a time, from end system to ingress router, router to router, and from egress router to destination end system. It is not responsible for reliable delivery to a next hop, but only for the detection of erroneous packets so they may be discarded. In this scheme, IPv4 and IPv6 would have to be classed with X.25 as subnet access protocols because they carry interface addresses rather than node addresses.
A number of layer-management protocols, a function defined in the Management Annex, ISO 7498/4, belong to the network layer. These include routing protocols, multicast group management, network-layer information and error, and network-layer address assignment. It is the function of the payload that makes these belong to the network layer, not the protocol that carries
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What is needed to convert from the osi model protocols to the IBM sna model protocols?
The OSI reference model is just a way of thinking about a network, of analyzing it. It is not a specific technology, and there is no need to convert anything.
What osi model layer do protocols manage data delivery priorities?
Network Layer
What are the network addresses for each layer in the OSI model?
The OSI model is a simple framework for categorizing the different layers that make up network communication. There is no direct relation between the OSI model and any network address or protocol. In fact, most network protocols don't fit neatly in to the OSI model. TCP/IP, for example, spans the data-link, network, and transport layers.
At what layer in the osi model would you find protocols such as rip and ospf?
OSPF and RIP are used in the network layer of the ISO model.
What network component operates at layer 3 of the OSI RMrm and forwards network protocols such as ip toward their destination?
Routers and layer 3 switches work at Layer 3 of OSI model.
What protocols at other layers of the OSI model does ping use?
Layer 3 of the OSI model. An ICMP header follows the IP header of the IP packet.
IPX is used in layer of Novell Netware?
In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).
Why Internet and its protocols is prior over OSI?
The OSI model came after TCP/IP networking protocols were available in networks. The OSI description also as to describe and identify networking components that do not exist in the TCP/IP model.
What is the difference between osi and tcp model?
1.The OSI model originally distinguishes between service,interval and protocols. 1.The TCP/IP model doesnt clearly distinguish between service,interval and protocol. 2.The OSI model is a reference model. 2.The TCP/IP model is an implementation of the OSI model. 3.In OSI model,the protocols came after the model was described. 3.In TCP/TP model,the protocols came first,and the model was really just a description of the existing protocols. 4.In OSI model,the protocols are better hidden. 4.In TCP/IP model ,the protocols are not hidden. 5.The OSI model has 7 layers. The TCP/IP model has only 4 layers. 6.The OSI model supports both connectionless and connection-oriented communication in the network layer,but only connection -oriented communication in transport layer. 6.The TCP/IP model supports both connectionless and connection-oriented communication in the transport layer.,giving users the choice. For more information visit the Related Link.
Which of the common LAN protocols extend to OSI network layer?
Net BUI
What protocols operates in the network osi layer and is able to communicate with the transport osi layer and the data link layer?
TELNET
Compare the osi model and tcp-ip model and their associative protocols?
The OSI model encompasses all of the TCP/IP sub-protocols plus several other protocols that are not part of TCP/IP. These would include IPX/SPX, NetBEUI, Appletalk, and other proprietary protocols that are not part of the TCP/IP model.
