This document is not restricted to specific software and hardware versions. Some platforms, for instance, require the Cisco IOS Enterprise feature set in order to perform this activity. As such, its availability may vary from one Cisco IOS software release to another, such that it might not exist in some releases. Note: The ttcp command is a hidden, unsupported, privileged mode command. TTCP requires Cisco IOS ® Software Version 11.2 or higher and Feature Sets IP Plus (is- images) or Service Provider (p- images). Readers of this document should be knowledgeable of the following: Before You Begin Conventionsįor more information on document conventions, see the Cisco Technical Tips Conventions. However, you can also use this feature to test the connection speed between any two devices with IP connectivity between them. The TTCP utility can be effective in determining the actual bit rate of a particular WAN or modem connection. For general information on TTCP, refer to Network Performance Testing with TTCP. You can then use these figures to calculate the actual throughput on the link. At the end of the test, the two sides display the number of bytes transmitted and the time elapsed for the packets to pass from one end to the other. The transmitting side sends a specified number of TCP packets to the receiving side. In order to use it, start the receiver on one side of the path, then start the transmitter on the other side. You can use the Test TCP utility (TTCP) to measure TCP throughput through an IP path.
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