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The Test TCP (TTCP) program can be used to generate TCP (and UDP) traffic on IP based networks.

The Cisco version of TTCP sends and receives TCP data (the Unix version also does UDP.) You have control over the number of packets sent, the packet size, the port number at which the transmitter and receiver rendezvous, and several other parameters. By changing the parameters, you can test various buffering mechanisms in the network equipment between the transmitter and receiver.

And the destination doesn't have to be another router. To test throughput to a remote server, start only a transmitter and specify the discard port (TCP port 9) on the remote server.

TTCP reports the amount of data transferred, the transfer time, and the approximate throughput. By comparing the actual throughput with the theoretical bandwidth between the transmitter and receiver, you can tell whether the network is operating as expected. Variations in throughput may indicate a significant amount of other traffic, overloaded network equipment, or perhaps communications errors which are causing packets to be corrupted or dropped. By performing tests on individual segments of the path, you can determine which links or devices should be examined in more detail.

TTCP Version: 1.0, which is provided as either a Java application or as Unix source code. For the Unix source code version, you need to be able to compile C source code for any system that supports the Berkeley sockets interface.

For Win95, use this client and this Java RE; and here is the readme for it.

The client is also compiled on ISSNM5051 and ISSNM5060 located in /usr/local/bin.

The client also comes bundled in Cisco IOS < 11.2.

Corporate Information:
Developer: Chesapeake Computer Consultants
Corporate Home Page:   HTTP://www.ccci.com
Product Corporate Home Page: HTTP://www.ccci.com/tools/ttcp

Quick Start Guide
Available scripts:

Hard-Copy Documentation Location: none

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Last revised: vlt 05/20/99