User manual POLYCOM NETTACH HELP

[. . . ] It writes this data into a log file that can be imported by a spreadsheet program to help analyze the data. See Creating Log Files and Importing Log Files into Excel. Determine a connection's bandwidth threshold - You can run a test to find the maximum amount of bandwidth a network connection can support. See Determining a Connection's Bandwidth Threshold. [. . . ] On the General tab, click the application or data rate you wish to simulate. If you selected Sender, enter either the remote host name or the IP address under Remote Host. Change or accept the defaults for the Jitter Limits, Packet Loss, and Iterations. Check the desired options under Program Control. Type in the Packet Parameters, Packet Rate, and Timeout. Check AutoScan only if you want to determine a connection's bandwidth threshold. The Advanced tab options must match on the sending and the receiving computers. To Run a Test Using QuickStart! 1. Preliminary and Confidential - Beta-2 Draft - 10/30/97 5 2. If you selected Sender, type the name or the IP address of the receiver in the Remote Host field. runs a NetTach test using the default settings for PictureTel LiveLAN. Using Advanced NetTach Options You can perform the following advanced options using NetTach: Testing a Connection Over Time Creating Log Files Importing Log Files into Excel Determining a Connection's Bandwidth Threshold To Test a Connection Over Time You can evaluate how a network connection behaves over time by running NetTach continuously for a day or longer. The resulting information is automatically captured in log files. You can import the log file data into Microsoft Excel, or another spreadsheet application. This information illustrates the bigger picture of overall network performance. To test a connection over a 24-hour period, change the number of test iterations from 1 to 1040. A log file with the results of the test will be created. Log files for tests run over a 24-hour (or longer) period contain the same information that is displayed after a short test. Each entry on the log file includes the following information: n time stamp from the receiving computer sending computer's IP address jitter transfer rate packets lost packets out of order clock delta [the difference between the clocks on the sender and the receiver] n n n n n n To Create a Log File 1. On the sending computer, click the Network Options icon . 6 Preliminary and Confidential - Beta-2 Draft - 10/30/97 2. On the Admin tab, check the Log Results check box or set the number of iterations to 1025 or higher. The resulting log file is named automatically with a date-stamp based on the time the test began. For example, a file named NT07291636. log contains the results of a test on a sender that began on July 29 at 4:36 p. m. (system time). To Import Log Files into Excel Most spreadsheet applications will import a NetTach log file directly because they are in a standard ASCII, tab-delimited format. [. . . ] Port number of the system you are testing with. Accepts 1024 through 4096. Define the number of packets and their size in bytes. Tests for maximum bandwidth allowed for this connection. How long the receiver waits for a response before stopping the test. Specify the transfer rate of the packets for this test. Starts running the NetTach test. The type of TCP/IP network connection. The Summary Screen Green light indicates a good (acceptable) quality connection. [. . . ]