ip transit vs transport

controllable. In the core transmission network, the fiber is not the IP message, it is more like the IP packet after the modulation of the physical layer of the stream. All kinds of XDM are essentially used in this separation overlay technology, in the chip inside, on the motherboard, in the access network, in the transmission network, you will find a lot of multiplexer, multiplexer, separators and other t

controllable. In the core transmission network, the fiber is not the IP message, it is more like the IP packet after the modulation of the physical layer of the stream. All kinds of XDM are essentially used in this separation overlay technology, in the chip inside, on the motherboard, in the access network, in the transmission network, you will find a lot of multiplexer, multiplexer, separators and other t

?! Isn't it because of the IP network! As I mentioned earlier, separating one line in a high-speed environment is the easiest way to do it at the physical layer. Why do we need to do it at the IP layer, the IP layer brings complexity and control. In the core transmission network, the optical fiber does not run an IP p

China's IP routers have developed rapidly and their technology is also very mature. Many people may not understand the connection between IP Routers and SDH devices of the IP transport network, after reading this article, you must have gained a lot. I hope this article will teach you more things. In recent years, the b

kinds of information that must be used for network communication: the protocol that the connection uses, the IP address of the local host, the protocol port of the local process, the IP address of the remote host, and the protocol port of the remote process.When the application layer communicates data through the transport layer, TCP encounters a problem that pr

transmit the data2.5 TCP Server DesignThe previous talk about UDP server design, you can find that the UDP server completely does not need the so-called concurrency mechanism, it just set up a data input queue can be. But unlike TCP, TCP servers need to establish a separate process (or lightweight, thread) for each connection to ensure the independence of the conversation. Therefore, the TCP server is concurrent. And TCP also needs to be equipped with an incoming connection request queue (also

) the process of 1.TCP/IP protocol data Encapsulation Take the transport layer adopt TCP or UPD, the network layer uses the IP, the link layer uses the Ethernet as the example, may see the TCP/IP message encapsulation process as shown. The user data is encapsulated by the application layer protocol and passed to th

Plot? Tcp / ip? Sixth chapter? TCP vs. UDP? Note 6.1 The role of the transport layer?The transport layer must indicate this specific program, in order to achieve this function, use the port number of such an identification code. Depending on the port number, it is possible to identify specific programs that are all processed by the application layer on the

F5 converted. This is true even if viewed from the server.Note that headers can only be viewed from the Inbox, which is not visible from the sent messages.The second type: from the server to seeIn the first step, we can get the IP address of the CAS server that the message passes through, then we'll go to the Cas/hub server's messagetracking log.Copy the log out, and then open with Excel, Note: The txt dragged directly into Excel, so that the format

! "+ e.getmessage ());throw new Fesexception (e);} catch (Exception e) {Log.error (E.getmessage (), E);}return message; }Method 2:Public String Sendxmlmsgtojsyhls (byte[] sendmsg) throws Exception {Establish connection this.startconnect ();Logger.info ("\nsend message:\n" + new String (sendmsg));Send Message This.sendbuffer (SENDMSG);Receive Message byte[] responsemsg = This.recievebufferyh ();Close connection this.shutdownconnection ();String Msgres =new string (responsemsg);return msgres;}/***

These days because of the laboratory off the net, so has been unable to send essays, but good habits still have to insist.Today, let's talk about an important layer-the transport layer. The Protocol of Transport layer is mainly divided into TCP protocol and UDP protocol. The former is referred to as Transmission Control Protocol, which is packet transport. Today,

layer, but retains the boundaries of these messages. That is to say, the application layer to the UDP long message, UDP is sent, that is, send a message at a time.For byte-stream, although the interaction between the application and TCP is a block of data at a time (varying in size), TCP sees the application as a series of unstructured byte streams. TCP has a buffer, and when the data block that the application transmits is too long, TCP can divide it short and then transmit it. If the applicat

TCP/IP Note 3. Transport Layer (3) -- TCP timeout retransmission algorithm TCP sets a timer for each packet segment sent by TCP. As long as the retransmission time set by the timer is reached but no confirmation has been received, it is necessary to re-transmit this packet segment 1. average round-trip latency RTT round-trip latency: the time when a packet segment is sent and the time when the corresponding

VIM into the/etc/sysconfig/network-scripts/ifcfg-eth0Joingateway=10.0.0.254Errors encountered in adding or modifying a gatewaySiocaddrt:no such process add route errorReasonThe gateway to add or modify is not the same as the network segment where the host or IP resides.For example, the gateway I want to add is 192.168.1.200, but my host does not have 192.168.1 segments of the NIC, only one 10.0.0 NIC.Later on the simplest way to change 192.168.1.200

TCP/IP Note 3. Transport Layer (1) -- UDP, TCP 1. Transport Layer 1.1 two Protocols: TCP and UDP. (1) TCP: provides a reliable data transmission service. TCP is connection oriented and can communicate only after the link is established. (2) UDP: data is sent directly, and no matter whether the recipient is receiving or not, even if UDP cannot be delivered, no ICM

-IP protocols temporarily allocate port numbers between 1024~5000Port number greater than 5000 reserved port number for other servicesAbout the TCP protocolTCP is the most commonly used protocol for Transport layer, and it is also a more complex protocol.TCP establishes a link before the data is transferred and closes the link when the transmission endsTCP three-time handshake for establishing a linkFirst h