network protocols

Added support for CDP and EDP in the latest NetTool and LinkRunner, which will greatly improve the network status information provided to users during fault diagnosis. CDP is the abbreviation of Cisco Discovery Protocol; EDP is the abbreviation of Extreme Discovery Protocol. This article describes the use of CDP and EDP protocols and the information available from LR and NT during

Route information protocol (RIP) The routing information protocol was originally designed for Xerox PUPPARC universal protocol. In 1981, the Xerox network system protocol was collectively referred to as "GWINFO" and defined as RFC 1988 in 1058 ". The routing information protocol is easy to configure and works very well in small networks. However, in large networks, the routing information protocol is inefficient. As I said to myself, the routing infor

1 Introduction SAN is a private network and the backend of a network server group. It can be connected to a high-speed private network using storage protocols such as fiber channel or iSCSI, so that network servers can be directly connected to multiple storage devices. SAN c

database for the accessible information of the network. When the vro protocol running EGP advertises reachable information, you must note that only authorized advertised routes can be transmitted. Otherwise, other parts of the interconnected network will be affected. For example, a route in an autonomous system occasionally broadcasts a non-existent route with a distance of 0 to the University of Perdu, th

communicate between the two. The internet enables any autonomous (Non-core) gateway to send "accessible" information to other systems, at least to a core gateway. If there is a larger autonomous network, it is often assumed that there is a gateway to handle these accessible information. Like GGP, EGP uses a query process to let the gateway know its neighboring gateways and continuously exchange Routing and state information with its neighbors. EGP i

frame smaller than or greater than this limit, we can regard it as a wrong data frame, generally, Ethernet forwarding devices discard these data frames. Since the maximum data frame of Ethernet ethernetii is 1518bytes, deplane the frame header of an Ethernet frame (DMAc destination MAC address 48bit = 6 bytes + SMAC source MAC address 48bit = 6 bytes + type domain 2 bytes) 14 bytes and the CRC check at the end of the frame is 4 bytes, so the rest of the places that carry the upper-layer protoc

"routing IPX add/set staticroute, "routing ipx set global" indicates configuring global IPX route settings. SPX Protocol (Sequences Packet Exchange). The SPX Protocol is based on Xerox SPPSequences Packet Protocol, it is also a network protocol for LAN developed by Novell. In the LAN, the SPX protocol is mainly responsible for error-free processing of the entire transmitted data, that is, error correction. Application: the SPX protocol is generally u

, and secondly, it is full-duplex. In terms of reliability, timeout retransmission and RST validation mechanisms are used. In terms of traffic control, the sliding window protocol is used, which stipulates that unconfirmed groups in the window need to be re-transmitted. In terms of congestion control, the slow start algorithm is used. What is TCP/IP? TCP/IP (Transmission Control Protocol/Internet Protocol) is an industrial standard Protocol set designed for WANs. It was developed by research ins

/l-cn-gpb/, http://www.searchtb.com/2012/09/ protocol-buffers.html;Why use a serialization protocol? because today's application is to use different languages cross-platform communication across the network, so how to make the data interaction in the process of non-destructive and effective interaction is a factor that must be considered, and the serialization protocol is to solve this problem is born;What factors should we consider when choosing a se

objects such as business cards, calendars, and files, as well as business cards. File Transfer profile (FTP) Send and receive files Synchronization Profile (Sync) Process files similar to PDA and PC content during the same period Headset profile (MK) Use a headset for voice calls Hands Free profile (HFP) Added the phone call function to headset profile. Human Interface Device profile (HID) Wireless communication between the mouse, keyboard, and other input devices Basic imaging profile (BIP) Se

that some commands are sequential, but most commands do not have this requirement. 3,RTSP can be said that the basic reuse of the design idea of HTTP, from the request and response message composition can be clearly seen. But it also borrowed from the relevant good ideas in FTP. such as the separation of data and control, RTSP data transmission is by RTP/RTCP and other protocols to achieve. In HTTP, the request response pattern is based on the CS mod

In Internet protocols, the IP address is useless. Without an effective and correct IP Address Allocation, we cannot make the Internet work. Now let's talk about the relevant issues. For the basic content of the IP Internet protocol, please read from below. Addressing There is a difference between the name, address, and route. The name is what we are looking for. The address indicates where the name is located and how the route solves the problem. IP a

other sensor nodes, and the energy supply module supplies energy for the operation of the entire sensor network. The energy supply of sensor nodes is battery, and the node energy is limited. Consider extending the life cycle of the entire sensor network as much as possible. When designing sensor nodes, ensuring the continuity of energy supply is an important design principle. Sensor node energy consumption

servers that use TCP. It is better to use UDP in the LAN because the LAN has stable network guarantee. UDP can provide better performance. V2 is used by default in Linux, but nfsvers = n of mount option can also be used. NFS uses the protocols and services provided by TCP/IP to run on the application layer of the OSI layered model, as shown in table 1. Table 1 NFS on the OSI layered model Number

heterogeneous networks) ARP (Address Resolution Protocol): Address Resolution Protocol RARP (Reverse Address Resolution Protocol): Reverse Address Resolution Protocol ICMP (Internet Control Message Protocol): Internet Control Message Protocol IGMP (Internet Group Manage Protocol ): Internet Group Management Protocol BOOTP (Bootstrap): optional security start Protocol Data Link: bridge switch (switcher) HDLC (High Data Link Control ): advanced Data Link Control (storing data between LANs-forward

Dubbo supports Dubbo, RMI, Hessian, HTTP, WebService, Thrift, Redis and many other protocols, but the Dubbo website is recommended that we use the Dubbo protocol. Here we explain each of the protocols for Dubbo so that we can make the right choice in the actual application. Dubbo Protocol The default protocol, using mina1.1.7+hessian3.2.1-based tbremoting interactions.Number of connections: Single connectio

provides communication sessions between computers. The selection of transmission protocols depends on the data transmission mode.Two transmission protocols:Transmission Control Protocol TCP: provides reliable communication connections for applications. It is suitable for transmitting a large amount of data at a time. It is applicable to applications that require responses.User Datagram Protocol (UDP): provides connectionless communication and does no

1. Streaming Media)1.1 concept of streaming mediaStreaming Media Technology is the product of the development of network technology and multimedia technology to a certain stage. The term "streaming media" can refer to the stream technology that transmits continuous time-based media on the Internet, or the continuous time-based media itself that uses stream technology. Currently, there are two main methods for transmitting audio, video, and other multi

The RIP Routing protocol (Routing Information Protocols) is the most widely used distance vector protocol. It was developed by Xerox in 1970s. At that time, RIP was part of the Xerox Network Service (Xerox Network Service) protocol cluster. The TCP/IP version of RIP is the license version of Xerox protocol. The biggest feature of RIP is that the implementation pr

IP protocol Then, the TCP packet is embedded into the IP packet. IP packets must be set to the IP addresses of both parties. This is known. The sender is 192.168.1.100 (Local Machine), and the receiver is 172.194.72.105 (Google ). The Header Length of the IP data packet is 20 bytes, and the total length of the embedded TCP data packet is 5000 bytes. 　　9. 7 Ethernet protocol Finally, IP data packets are embedded into Ethernet data packets. For an Ethernet packet, you must set the MAC address of