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Layer-2, layer-3, and layer-4 switches have different characteristics. layer-2 switching is a mature technology. A layer-2 switch is a data
The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forward it according to the MAC address, the MAC addresses and corresponding ports are recorded in an internal addr
Introduction of TCP/IP protocol families from the underlying layer to the upstream layer: 1. The network interface layer is a method for transmitting data packets from the network layer of a device to the network layer of another
From: http://www.juniperbbs.net/viewthread.php? Tid = 5859 extra = Page % 3d1% 26amp % 3 bfilter % 3 ddigest The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forw
1) layer-2 Exchange Technology The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Addr
IP Control Protocol The IP protocol is only responsible for transmitting IP packets and cannot detect and control problems in the network. These tasks are completed through the Internet control protocol. ICMP (Internet Control Message Protocol) (1) The IP protocol provides
L2 exchange technology:The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forward it according to the MAC address, the MAC addresses and corresponding ports are recor
0SI layer-7 protocol: Transmission Layer AnalysisThe lower layer of 0SI is mainly for data communication, the higher layer of 0SI is for users and information processing. The transport layer is located between the lower and higher
1.UDP protocolUDP is a connectionless transport layer protocol in the OSI Reference Model, which is mainly used for transport that does not require packet order arrival, and the packet transmission sequence is completed by the application layer [2], providing a simple and unreliable information delivery service for tra
a host or a simple routing algorithm for it. essentially the difference is that the host never forwards the datagram from one interface to another, while the router forwards the datagram. The host that contains the router function should never forward datagrams unless it is set to that.In a general system, IP can accept datagrams from tcp,udp,icmp and IGMP (i.e. locally generated datagrams) and send them, or accept datagrams from a network interface and send them, and the IP
0SI layer-7 protocol: Session Layer Analysis 1. Main tasks of the Session Layer: provides a user-oriented Connection Service to provide necessary means for organization and synchronization between cooperative session users. 2. Session La
OSI is an open reference model for System Interconnection. It is a well-defined protocol specification. The OSI model has a layer-7 structure, and each layer can have several child layers. Next I will briefly introduce these 7 layers and their functions. Layer 7 of OSI is 7 Application
(8/18) re-learn Standford_iOS7 development _ protocol, block, animation _ course notes, ios7 Layer Protocol Lesson 8: 1. Agreement Another method of Security Processing id type is: id A. Statement // Protocols are generally stored in. in the H file or in the class. in the hfile @ protocol Foo B. Implement the
[Network layer] Analysis Network Layer-Internet Control Packet Protocol ICMP (Internet Control Message Protocol) 1) Message format: the ICMP packet is encapsulated into the data part of the IP packet, and the data part of the ICMP packet is the first eight bytes (IP address and port number) of the IP header and data pa
(1) Differences Between Layer 2 switches, Layer 3 switches, and Layer 4 switches The layer-2 switching technology is mature. The layer-2 swi
takes 0 and a positive integer)2.2 Root port of the non-root switch is elected.1. Select a small cost (the larger the bandwidth, the smaller the overhead), the closer the root switch is.2. Neighbor Bridge ID is small.3. Port ID (port number) (upstream ports) Select a small2.3 Designated Port of the electoral segment0. This network segment refers to the data link segment, such as the connection between switch B and C is the network segment.1. Select a
under TCP and UDP provide different port numbers, these features can be added to a single application (or databases used by those applications. Similarly, the IP address is designed based on the idea of treating the network below it as a black box, so that it can be considered as an independent layer when discussing TCP/IP. 4 Application Layer(OSILayer 5 to
, UDP Networking Layer (Network) Network layer IP, ICMP, ARP, RARP, AKP, UUCP Data Link Layer Data Link Layer FDDI, Ethernet, Arpanet, PDN, SLIP, PPP Physical Layer (physical) IEEE 802.1A, IEEE 802.2 to IEEE 802.11
The SSL (Secure Sockets Layer) protocol was first developed by the famous Netscape company. It is now widely used for identity authentication on the Internet and secure data communication between web servers and Client browsers. The purpose of the SSL protocol is to provide secure and reliable communication protocol
TCP/IP is a commonly used standard protocol for network interconnection. It can communicate with each other in different environments and nodes, it is the protocol used by all computers connected to the Internet to exchange and transmit various information over the network. It is also the protocol used for interconnection between Windows NT, Windows 2000 Server,
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