Traceroute introduction and function
First, what is traceroute? Internet, that is, the Internet, is currently the world's largest computer network, more exactly the network of the network. It consists of tens of thousands of local domain networks and millions of computers throughout the world, and network communication is performed by TCP / IP protocols for heterogeneous networks. In the Internet, the transmission of information is to reach the other end through a multi-segment transmission medium and device (router, switches, servers, gateways, etc.) in the net. Each device connected to the Internet, such as hosts, routers, access servers, etc., there will be a separate IP address. Through Traceroute We can know what path from the host from your computer to the other end of the Internet. Of course, each data package is not the same as the path to a different origin (Source) to a Destination, but basically most of the routes taken are the same. In the UNIX system, we call it Traceroute, MS Windows for Tracert. TRACEROUTE measures how long it takes up to the destination device until it returns to its destination device. Each device on a path Traceroute should test 3 times. The output of the output includes the time (MS) and the name of the device (if any) of the device and its IP address.
In most cases, as a network engineering technician or system administrator will execute the command line directly under the UNIX host system: Tracerert Hostname is executing Tracert's command: Tracerert Hostname, for example, using Windows NT host in Beijing (After the connection of point-to-point point is established with Beijing 163) Use the tracert command in the NT system: (Use: Start -> Run, enter "Command" to call up the Command window with this command) C: /> Tracert www.yahoo. COM Tracing route to www.yahoo.com [204.71.200.75] OVER A MAXIMUM OF 30 HOPS: 1 161 MS 150 MS 160 MS 202.99.38.672 151 MS 160 MS 160 MS 202.99.38.653 151 MS 160 MS 150 MS 202.97.16.1704 151 MS 150 MS 150 MS 202.97.17.905 151 MS 150 MS 150 MS 202.97.10.56 151 MS 150 MS 150 MS 202.97.9.97 761 MS 761 MS 752 MS Border7-Serial3-0.sacramento.cw.net [204.70.122.69] 8 751 MS 751 MS * Core2-fddi-0.Sacramento.cw.net [204.70.164.49] 9 762 MS 771 MS 751 MS Border8-fddi-0.Sacramento.cw.net [204.70.164.67] 10 721 ms * 741 MS globalcenter.sacramento.cw.net [204.70.123.6] 11 * 761 MS 751 MS POS4-2-155M.Cr2.Snv.globalCenter.net [206.132.150.237] 12 771 MS * 771 MS POS1-0-2488M.hr8 . Snv.globalcenter.net [206.132.254.41] 13 731 MS 741 MS 751 MS Bas1R-ge3-0-hr8.snv.yahoo.com [208.178.71.62] 14 781 MS 771 MS 781 MS www10.yahoo.com [204.71.200.75] TRACE COMPLETE. You can try it directly. Parameter Description: Tracert [-d] [-h maximum_hops] [-j computer-list] TARGET_NAME This diagnostic utility is transmitted to the destination Internet Control Information Protocol (CMP) Respond to the message to determine the route to the destination. Each router on the path should be at least 1 of the TTL value before forwarding the ICMP response message, so TTL is a valid jump count. When the TTL value of the message is reduced to 0, the router sends back the ICMP timeout information to the source system. The TTL value can be determined by sending the TTL value to 1 by sending the TTL value 1 and at the subsequent transmission or reaching the maximum TTL value, Tracert can determine the route. The router can be determined by checking the ICMP timeout (IME Exceeded) message sent back from the intermediate router. Note that some routers are "quiet" to discard the extension of the living time (TLS) and is invalid to Tracert. Parameter -D Specifies that the computer name resolves the address. -h maximum_hops Specifies the maximum number of jumps to find the target.
-jcomputer-list Specifies the source route in Computer-List. -w Timeout Wait for milliseconds specified by Timeout to each response. Target_name The name of the target computer. Second, what is the Traceroute Gateway - Traceroute Gateway? Generally use Traceroute (or tracert) based on a host, but usually you can only know that the host address from the host is the source address to the internet network. The case of routing connection quality and data transmission efficiency, using a web-based approach, as long as one host has a specific CGI program, the user can run the relevant program through this host, perform TraceRoute's functionality. This host we call it TRACEROUTE gateway. The Traceroute Gateway helps users understand the topology of the network and logical connections and the efficiency of data transmission. If this gateway is much enough, we can easily understand the connection between the hosts. Third, why do you want to use Traceroute? 1. Almost every online person (especially WebMaster) is concerned with the connection between their computers (or other devices), routing (path), communication time, speed, etc. are concerned. The service of the Traceroute gateway provided by the regional webmaster organizations organized by ChianNetMap will give you a satisfactory answer. From your computer to any other place, CHINANETMAP (Traceroute) can provide each device (IP address) and its connectivity time. It allows you to draw a path through the network. 2. Many companies and units have or are setting up their own servers - especially the web server. Once you have your own web server, with the increasing number of netizens (including potential, unable to count netizens), you must also want to know if they can connect with you. How your ISP is connected to one or more NAPs, as well as their connection efficiency directly affects your connection quality. 3. When selecting ISP, backbone network connection, when you have a host, most of you like to check How is the connection performance of this site and how else are anyone else? Chinanetmap will give you a perfect answer. Fourth, Traceroute's function introduction: Traceroute was earlier by the applet written by Van Jacobson in 1988. At that time, it was mainly solved the problems of some of the networks he encountered. Traceroute is an important tool that correctly understands IP networks and understands the principle of routing. They are responsible for web engineering technology and system management WebMaster is a convenient program. For ISP, set up Traceroute Gateway to help users build and maintain confidence in service providers quality. ISP with high service quality can be used to enable the user to understand its efficiency of network connections and data transfer by setting up a Traceroute gateway. Of course, the infrastructure is poor, and the quality of service quality is more fearless to provide this service. Because so users can use this tool to understand the current network connection of the service provider. After a host is installed with the relevant Traceroute's CGI program, you can enter the IP address or name of the corresponding destination host, you can get the relevant data: such as: in the US host http://bs.mit.edu: 8001 / CGI-BIN / TraceRoute queried to China Nanjing Polaris Station www.lodesoft.com (China Webmaster Alliance partner) data transmission path. The query interface is: Traceroute Hack
The result of the query is: Traceroute Hack1 E40-RTR-E40Server72- Ether.mit.edu (18.72.0.1) 4 ms 4 ms 4 ms2 External-RTR-FDDI.MIT.EDU (18.168.0.12) 4 ms 4 ms 4 MS3 F1- 0.cambridge2-br2.bbnplanet.net (192.233.33.6) 4 ms 4 ms 4 ms4 S11-0-1.cambridge1-br1.bbnplanet.net (4.0.1.201) 8 ms 4 ms 4 ms5 p1-0.cambridge1- Nbr2.bbnplanet.net (4.0.1.45) 4 ms 4 ms 4 ms6 p4-1.bstnma1-ba1.bbnplanet.net (4.0.2.170) 4 ms 4 ms 4 ms7 p1-0.bstnma1-ba2.bbnplanet.net ( 4.24.4.194) 4 ms 8 ms 8 MS8 P2-1.NYC4-NBR3.BBNPLANET.NET (4.24.4.238) 8 ms 12 ms 12 ms9 p1-0.NYC4-NBR2.BBNPLANET.NET (4.0.5.25) 8 ms 12 ms 8 ms10 p4-0.sanjose1-nbr2.bbnplanet.net (4.0.5.97) 70 ms 70 ms 70 ms11 p1-0.sanjose1-nbr1.bbnPlanet.net (4.0.5.85) 70 ms 70 ms 70 ms12 P4- 0.paloalto-nbr2.bbnplanet.net (4.0.1.1) 70 ms 74 ms 70 ms13 p0-0.paloalto-cr18.bbnPlanet.NET (4.0.3.86) 70 ms 74 ms 74 ms14 h1-0.atteasuresylink. BBNPLANET.NET (4.1.142.254) 74 MS 74 MS 78 MS15 199.37.127.234 (199.37.127.234) 78 ms 74 MS 78 MS16 2055.174.74.170 (205.174.74.170) 230 ms 238 ms 227 ms17 202.97.9.65 (202.97.9.65) 238 ms 231 MS 223 MS18 * 202.97.9.49 (202.97.9.49) 234 ms * 19 202.97.10.110 (202.97.10.110) 246 ms 250 ms * 20 202.97.24.178 (202.97.24.178) 234 MS 238 MS 238 MS21 202.102.24.74 (202.102.24.74) 234 MS 254 MS * 5. Traceroute Command Parameters: Traceroute Usage: Traceroute [Options]
